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Submersible Electric Motors and Rov Electric Motors For Sale.

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Please contact us to discuss your submersible electric motor, subsea electric motor, ROV electric motor and ROV HPU.
sales@silvercrestsubmarines.com

Silvercrest / Submersible Motor Engineering design, manufacture, and supply, submersible electric motors for all underwater applications.

SUBSEA electric motors and ROV electric motors for SUBSEA vehicles and equipment.

Submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements.

We also offer SUBSEA electric generators for Tidal Power Generation.

Silvercrest / Submersible Motor Engineering specialize in the bespoke manufacturing of submersible motors, Rov motors, and subsea motors, motor-pump sets, and HPU's for use on Rovs, subsea trenchers, subsea ploughs, dredgers and water lift pump systems. For use in the offshore Oil and Gas and Telecommunications industries, and subsea to depths of 4000m.

We offer a range of motors, motor-pump sets, ROV HPU, submersible, subsea and Rov motors (5hp to 1500hp) for use in the more popular classes of subsea ploughs and Rovs. All of these motors are available in either SS316, Duplex, Super Duplex stainless steel, or with a hard anodized aluminium finish.

We can offer subsea submersible motors with a wide range of speeds and voltages (including 3000v, 6000v and 10,000v).

We can design and build motors to suit your individual and special project requirements.

We refurbish and service a wide range of submersible motors.

Our product is excellent, our prices very competitive, and our delivery

schedule the best in the industry.

Silvercrest / Submersible Motor Engineering is the world leader in submersible motor technology, enabling our customers to explore deeper underwater than ever before.

High power, high voltage and high-pressure specifications are common place for many of our clients.

Our submersible subsea and ROV motors are the best on the market today, offering a comprehensive choice of materials and design to underwater and ROV operators.

Silvercrest / Submersible Motor Engineering specializes in all aspects of submersible electric motor operation, performance, and design.

Due to industry demand for readily available quality parts, we also rewind, repair, redesign, and machine major components of other manufacturer's motors that require repair and re-manufacture.

CONTACT US TODAY TO DISCUSS YOUR SUBSEA MOTOR REQUIREMENTS.

Email: sales@SilvercrestSubmarines.com

SME now has a Submersible motor Service Facility in the United Kingdom.

SME(UK) now offer a complete submersible electric motor repair facility for:

Rewinds / rebuilding /electrical conversion / construction modification.

We also design and build specialized motors for use SUBSEA for the offshore industry.

Installation and start-up technical support.

Have a problem and need help with your subsea motor, then we offer the best choice in consulting services.

Troubleshooting. Any type of mechanical repair. Shaft. Bearings. End bells. Seals. Testing.

Repair and rewind of large high voltage (500kW 6600V) submersible electric motors.

SME High Temperature Submersibles in 6"to 20" frames suitable for operation in ambients of 75 Deg.C

High Voltage water filled submersible motors-3300V,4160V and 6600V.

Upgraded Temperature Monitoring unit available with new improved user friendly parameter setting.

SME ROV and Subsea motors suitable for depths of 4000m.

ROV HPUs. Subsea Motor-pump sets.

Subsea Electric Generators for Tidal Generation. Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500kW.

SME (UK) designs, manufactures and supplies water filled and oil filled ROV and subsea submersible motors globally.

SME (UK) is a full Sales, Service & Repair division for the factory in Australia.

SME (UK) offers repair of all submersible electric motors.

SME (UK) can rewind and completely rebuild the following listed motors.

Alstra, Aturia, Bamsa, B. J., Elmaksan, Exodyne/EEMI, G.E., Hayward Tyler, Hitachi, Mercury, Oddesse, Pleuger, Saer, S.M.E., Subteck, Sumo, Sun Star, U.S.

Also five 400kw, 4 –Pole, 3300/3/60, SS316 Construction, Subsea Submersible Motors for SMD.

Silvercrest / Submersible Motor Engineering supply submersible motors, HPU's, and motor-pump sets worldwide.

Our customers include SMD, Saab SeaEye, Ldtravocean, Fugro, CTC Marine Projects, Perry Slingsby and many others.

Subsea Trencher fitted with our SME 142-265KW stainless steel construction submersible motor and pump.

Silvercrest / Submersible Motor Engineering have manufactured and supplied six 400kw ROV20-4 motors, 4-pole/3300vac/3 phase/60hz, stainless steel construction. Single ended for fitment with Sauer hydraulic pumps Series-90-L250. Rated for 3000m depth operations.

Also three ROV204 submersible motors (300kw/4 pole/3300vac/3 phase/60hz) with stainless steel construction, and double ended for fitment with Sauer hydraulic pumps to SMD-Hydrovision. Together with 7.5kw motors for Rov cursor application.

SME has also manufactured a total of seven (7) 6600V motors todate, for three different offshore contracts. Petronas Dulang and Angsi Platforms. Star Energy KG Platform.

A new Saab-SeaEye Jaguar ROV, fitted with our SME ROV12-2, 48kW 65HP, 2-pole, 3000/3/50, aluminium construction ROV submersible motor, and Rexroth hydraulic pump. Fitted with temperature sensing and water detectors. Epoxy coated for protection.

Two submersible double-ended motors mounted with hydraulic pumps, fitted to a submarine digger.

SME ROV14-4, 75kW/100HP, 4–pole, 3000/3/60, Anodised Aluminium Subsea Motors with Interface to suit the Hydraulic Pumps.

We manufacture and rebuild very large submersible motors for a range of other offshore and subsea companies. These include:Global Marine, CTC, Sonsub, Star Energy, Sulzer Wood, Sulzer, Fugro, Apache, BHP Billiton, Petronas, SMD, Exxon Mobile, Chevron, Perry Slingsby, Subsea7, Bayu Purnama, ISE Ltd, Saudi Aramco, Woodside, PXP.

260kW Silvercrest / Submersible Motor Engineering Pump Motor under constructio n.

Picture shows our SME ROV10-4 subsea motor. Stainless Steel Construction, 7.5Kw / 440V / 3 phase / 60Hz / 4-pole submersible ROV motor. Supplied to Soil Machine Dynamics Ltd.

Silvercrest / Submersible Motor Engineering will bespoke manufacture virtually any shape and size of submersible motor required for subsea operations.

We will be very happy to discuss the details of your subsea motor / pump requirements in order to produce a detailed technical quote for you.

Silvercrest / SME design and build specialized subsea motors, and support packages for use on all types of Rovs and underwater vehicles in the offshore and subsea industry.

These submersible motors are usually made to order and vary from 1kW to 1500kW, 400 to 4160 Volts. 50 or 60 Hz, 2-Pole to 8-Pole.

There are two common methods of construction available: -

Stainless steel construction, or Marine Grade aluminium that is Black anodised to resist corrosion.

These motors are usually oil filled and pressure compensated. Common operating voltages are between 300 volts and 3300 volts - even for small 5kW motors.

6,000vac and 11,000vac motors also available by special request.

Certain subsea motors can operate down to depths of 10,000 meters.

SME manufactures new Submersible, Subsea, and Rov motors.

SME also rewinds, services and repairs all brands of Subsea, Submersible and Rov motors. Including Hitachi, Pleuger, Grundfos, Mercury, Byron Jackson, Haywood Tyler, and Franklin.

Silvercrest / Submersible Motor Engineering is a leading manufacturer of high quality submersible motors and pumps, designed specifically for subsea operations

Silvercrest / Submersible Motor Engineering specialize in the bespoke manufacturing of submersible motors, pumps and ancillary equipment for use on Rovs, subsea trenchers, subsea ploughs, dredgers and water lift

pump systems, for use in the offshore Oil and Gas and Telecommunications industries.

75HP Rov Subsea Motor.

We manufacture our own laminations, designed specifically to meet the individual requirements of each customer. We do not buy off the shelf standard rotor sets and fit them in a housing, as some other manufacturers will often do. As a result our motors are more efficient and generally

slightly smaller, in both diameter and length, than our nearest competitors for any given power rating.

SME design, manufacture, and supply, submersible electric motors, SUBSEA and ROV electric motors for all SUBSEA equipment. ROV HPUs, submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements.

SME also offer SUBSEA electric generators for Tidal Power Generation.

260kw motors fitted with pumps and coolers.

SME Repair and Rewind of large high voltage (500kW, 6600V) submersible electric motor

SME High Temperature Submersibles in 6"to 20" frames suitable for operation in ambients of 75 Deg.C

SME supply High Voltage water filled submersible motors-3300V,4160V and 6600V.

Upgraded Temperature Monitoring unit available with new improved user friendly parameter setting.

SME ROV motors suitable for depths of 4000M.

Silvercrest also offer a range of ‘standard’ motors for use in well-established underwater installations, such as the more popular classes of Rov and subsea ploughs.

SILVERCREST / SME offer:

Repair and rewind of large high voltage (500kW. 6600V) submersible electric subsea motors.

High Temperature Submersible subsea motors in 6-inch to 20-inch frames suitable for operation in ambient temperatures of 75 Degrees.C

High Voltage water filled submersible subsea motors (3300V, 4160V and 6600V).

Upgraded Temperature Monitoring units available with new improved user-friendly parameter setting.

ROV and subsea submersible motors suitable for depths of 4000m.

WD Series sump-pump motors.

NOW AVAILABLE.

Down Hole Submersible Motor.

4- Pole Down Hole Motor for submersible pump application. 10hp/4 pole/ Low RPM motor. We are pleased to offer our:

SME 10 inch, 10HP, 4 Pole, 400/3/50, SS316 Construction Submersible Motor.

A submersible motor for use on a subsea pumping project .

SME ROV12-6, 50kW, 380-440/3/50, SS316 Construction Subsea electrical Motor.

High voltage subseaTrencher motors for water jetting.

200 KW, Volts 3000V, 60HZ, 4 Pole, 1750 RPM, Compensation Oil Filled. Power Connector Burton. Sensor Connector Subconn. This motor will be coupled with a Rexroth Pump A4VSO 250 DR.

ROV14, 200kW 335HP, 4-Pole, 1800rpm, 3000/3/60, Anodised Aluminium
Construction Subsea Motor to Drive Hydraulic Pump. This pump will be fitted to the motor at our factory, matched and tested.

150 KW, 3000V, 60HZ, 2 Poles, 3500 RPM, Compensation: Oil Filled. Power Connector: Burton. Sensor Connector: Subconn. This motor will be coupled with a Pleuger water pump.

SME ROV14-2, 200HP 150kW, 2 pole, 3000/3/60, SS316 Stainless Steel Construction Motor to suit operation with Water Jetting Pump.

250Kw Motors for new Underwater Vehicle.

New 250Kw motors for new build Underwater Vehicle, to be mounted with hydraulic pumps.

Our ROV14, 250kW / 335Hp, 4-Pole, 1800rpm, 4000/3/60, Anodised Aluminium Construction Subsea Motor to Drive Hydraulic Pump. Interface to suit Hydraulic Pump .

High voltage motor-pump set to be used subsea at a depth of 6000msw.

The requirements being 3000VAC 50Hz, 15kW, 1500rpm (motor), 20 Lpm (hydraulic fluid flow rate), 21 Mpa (pump outlet pressure). We can offer the following motor-pump set complete.

SME ROV10-4, 15kW 20HP, 4 Pole, 3000/3/50, Aluminium Construction Subsea Motor, Coupled to Rexroth A10VSO18DFR Hydraulic Pump to give 20L/m at 21 Mpa. Epoxy coated for protection.

Submersible electrical motor.

Input voltage 380 Volts and 50 Hz. The application being for a hydraulic power pack aggregate which will work on a ship, and be in contact with sea water. Power capacity of the motor should be around 25 -30 kW and speed of rotation about 1400 - 2000rpm, pressure 500 bar.

We can offer the following motor, SME ROV10-4, 30kW, 4 Pole, 1500rpm, 380/3/50, Aluminium Construction Subsea Motor to Drive Hydraulic Pump, Epoxy coated for protection.

Silvercrest/ SME 6600vac Subsea Motors.

SME 36-inch 2200kW 6-Pole 6600/3/60Hz Super Duplex construction. Submersible Motor.

Submersible motors 6600/3/60hz , 1180rpm speed, and 2000kW power rating. Complete with 50m power cable, and PT100 with 50m instrument cable. To be used as fire water pump drive units.

SME 36-inch, 2200kW, 6 Pole, 6600/3/60Hz, submersible motor. Super Duplex Construction .

SME 36-inch, 2200kW, 6 Pole, 6600/3/60Hz submersible motors.

SME 36-inch, 1800kW, 4 Pole, 6600/3/60Hz Submersible Motor.

SME 36- inch, 1000kW, 8 Pole, 6600/3/60Hz, Submersible Motor

SME 300Kw, 6600vac, 4-pole Subsea Motor.

SME 400Kw, 6600vac, 4-Pole HPU Subsea Motor.

SME WATER JETTING PUMPS for ROV TRENCHERS.

SME now offers high quality, robust and reliable, water jetting pumps complete with SME submersible motor for all subsea operations.

Ideal for ROVs, Trenchers, Dredgers and other underwater applications.

Silvercrest/ Submersible Motor Engineering supply our own Pump/Motor combination. We offer a 2- pole, or 4-pole motor, coupled to our own designed pump (especially designed for trenching applications). Depth rating is 3000msw plus.

The pump and motor combination is rigorously tested in our factory to full performance before despatch.

For example: SME ROV14-4, 185kW 250Hp, 4 Pole, 4160/3/60, SS316 Construction Subsea Motor. Fitted to SME SS316 Construction/NAB Impeller Water Pump to produce 390m3/hr at 16 Bar.

The SME Jetting Pump can also be offered complete with a 265kW, 2- Pole, 3300V 60Hz, 3500rpm, all 316 Stainless Steel motor. The Pump is single stage with the impeller mounted directly onto the motor shaft (So no pump bearings to wear). This Impeller is easily removed and replaced as the only wear point. This pump provides flow rates from 1000-1500m3/h.

SILVERCREST / SME.

TEL: (+44) 1285 760620

EMAIL: Sales@SilvercrestSubmarines.com

Heat Exchanger Motors.

We now offer a complete range of water filled, watertight, submersible subsea motors with integral heat exchangers in 10-inch, 12-inch, 14-inch and 16-inch size for 2 pole and 4 pole speeds.

These subsea motors offer a significantly lower temperature rise when compared with standard submersible subsea motors. This is an advantage that can be utilized when customers want to operate in water with a high ambient temperature, or when there will be minimal cooling water flow available. Even with the standard applications the lower temperature rise will extend the life of the motor significantly. There is an accepted rule of thumb for electrical insulation that its life is shortened by one-half for every 10°C increase in operating temperature. The winding operating temperature for a normal water filled submersible motor is about 70 degrees.C, in 25 degree.C water. However an SME Heat Exchanger Motor will be running at about 45 degree.C. (This is 25 degrees cooler). This magnitude of difference in temperature rise will have a significant positive impact on motor life.

The basic design principle for these subsea motors is to circulate the internal water in the motor remove the heat from the "active" parts of the motor, and then pass it through a heat exchanger which brings the internal water back to somewhere close to the external ambient water temperature - before feeding it back through the "active" parts again to remove more heat. The heat exchanger increases the external surface area of the motor by 50% and the water circulation allows the heat to dissipate more evenly and quickly out of the subsea motor and into the external water. The small impeller inside the subsea motor that circulates the water has an insignificant impact on the motor efficiency in terms of additional load, while the subsea motor has an improved efficiency because the stator and rotor copper losses are reduced due to the lower operating temperature.

Motor Thermal Protection Unit

All SME Heat Exchanger Motors come with four (4) PT100 temperature sensors installed in the motor.

One PT100 is attached to the thrust bearing assembly that will detect excessive thrust loads and overheating in the thrust bearing.

One PT100 is installed in the end winding on the non-drive end of the motor.

One is installed half way down the slot in the winding in the middle of the motor.

One is installed in the end winding on the drive end of the motor.

SME can offer one temperature protection unit (SME4TM) to monitor all four PT100'S installed in the Heat Exchanger Motor.

Water Pump Motors.

Our water pump motors are not vertically oriented, water filled, down hole pump motors, as has previously been the norm throughout the subsea industry. Silvercrest/Submersible Motor Engineering motors are

substantial oil filled submersible motors, designed to run in the horizontal axis with a large thrust bearing assembly to withstand water pump loads.

We can offer specially designed turbine pumps to match our motors. Again these pumps are not the usual vertically oriented type, these are specifically designed with a twin bearing arrangement, for use in the horizontal axis. Thus dramatically extending operational life and improving pump reliability.

Silvercrest recently delivered ten 260kW, 3000VAC, double ended, 2 pole, stainless steel bodied motors to CTC Marine Projects Ltd. The motors will be used by CTC on their subsea plough and trenching vehicles worldwide. This was a bespoke order that was completed in six weeks from

receipt of order, ex-works from our manufacturing facility in Australia.

The 260kW/ 3000V / 60Hz / 2 pole pump motors (designed specifically for use in the horizontal axis) were fitted with shafts at both ends, in order to mate with three tandem mounted hydraulic pumps on one end and a Hayward Tyler M6 single stage water pump-set on the opposite end. In this 260kW model, rather than using the pivot shoe arrangement, typical of

vertically oriented pump-sets, heavy duty tapered roller bearings were fitted to the rotor to manage the water pump induced end-loads. Thus giving a calculated bearing life in excess of 11,000 hours, even when used in the horizontal axis. Depth rating on each motor is 10,000 meters, with oil filled compensation. Motor housings are 316 stainless steel, with Mylar coated windings (the ultimate in winding coating technology) being used in each motor at the request of CTC, giving an insulation rating of >16kV at a temperature of 140 degrees C.

Rov and Subsea Plough and Trencher Motors.

Silvercrest offer an established range of Rov motors ranging from 5HP to 500HP. All of these motors are available in either SS316 or Hard Anodized Aluminium finish. We will also design and build submersible motors to suit your individual requirements and subsea project.

Our motors are in use with most of the major operators worldwide such as Saipem, SMD Hydrovision, Sonsub, CTC Marine Projects, Impresub, Fugro, Thales, MTQ, LD Travocean and Canyon Offshore.

100HP Aluminium Bodied ROV HPU Motor.

75HP Plough Motor. 11.kW Submarine Thruster.

265KW Trencher Motor. 400Kw Motor/3000vac for Subsea Trencher.

Submersible ROV HPU and Compensation Units.

Silvercrest / Submersible Motor Engineering manufacture and supply a wide range of electric submersible motors, motor-pump sets, together with matched hydraulic pumps (HPU) or water pumps.

We can supply ROV HPU submersible motors from 30kW to 250kW, trenching HPU submersible motors from 100kW to 450kW, trenching jetting pumps, plough HPU submersible motors, plough jetting motor pump sets, turbine and centrifugal water pumps, hydraulic pumps, Rexroth A7 and A10 series pumps, and Sauer 90 series & Kawasaki KV3 series pumps.

We also offer a range of subsea components for manned submersibles, ROVs, submarines, subsea trenchers and subsea ploughs.

Also oil compensation units (Compensators). We supply AC thrusters as direct replacements to existing DC thrusters from 1kW to 50kW in size.

Our submersible motors and HPU’s are available in sizes varying from 2KW to 500 kW. They are the perfect power source supply for ROVs, Subsea Trenchers, TMS, and Subsea Tooling applications.

• High Reliability.
• Output Shafts each End of Motor if required.
• Shaft Powers from 2KW to 500KW.
• Industry Proven Windings.
• Wide range of speeds available.
• Water Ingress and Temperature Sensors.
• Various Voltage Options (to 6600vac).
• Wide Range of Hydraulic Pumps available.

Our motors and HPU’s are ideal for driving thruster systems, excavation and hydraulic tools requiring high power inputs.

Our submersible motors can also be used to drive many types of rotating machinery such as water pumps for trenching machines.

Motor winding temperature and water ingress sensors are included as standard.

To discuss your ROV HPU requirements please contact us:

Email: sales@Silvercrestsubmarines.com

Oil Compensator Units.

Silvercrest / Submersible Motor Engineering supply oil compensator units for subsea vehicles, to suit manned submersibles, ROVs, submarines, subsea trenchers and subsea ploughs, and subsea equipment.

We can offer a range of oil compensation unit sizes, including a 2.7L Compensator. 7 x 1/4" NPT (BSPT). SA-HC-0745-MAS.

This is a rolling diaphragm, positive pressure compensator (2700cc capacity), manufactured in corrosion resistant plastic suitable for ROV and tooling applications.

These units are particularly suitable for compensating thrusters, compensating oil filled junction boxes, compensating valve packs, and other subsea applications

• Size - 270cc, 2700 cc, and 13.5L
• Delrin Plastic Construction
• Grade 316 Stainless Steel Spring
• Adjustable Pressure Relief Valve
• Mounting Feet
• Low Level Proximity Sensor Option

HPU units for Underwater Vehicles.

EXAMPLES OF SME HPUs.

100hp HPU fitted to a new build ROV.

Submersible Motor Engineering manufacture:

High temperature submersible subsea motors for 55 deg.C. water ambient.

High efficiency water filled submersible subsea motors.

All stainless steel construction submersible subsea and ROV motors.

Full performance testing of submersible motors.

1000V and other special voltages - NO PROBLEM!

Super Duplex submersible subsea motors.

We offer a wide range of electric submersible motors, with matched hydraulic and water pumps for use subsea, and with underwater vehicles, and ROVs.

Drop in replacement motors for most of the popular submersible motors in use offshore and subsea.

Subsea ROV Trenching Motors, Hydraulic Pumps and Water Pumps.

We supply ROV HPU submersible motors from 30kW to 150kW.

Trenching HPU submersible motors from 100kW to 500kW.

Subsea trenching jetting pumps, subsea plough HPU submersible motors, subsea plough jetting pump sets, turbine and centrifugal water pumps, and hydraulic pumps (including Rexroth, Sauer, and Kawasaki).

HPU (Hydraulic Power Units) for subsea, and ROV operations.

Submersible Motor Engineering Hydraulic Power Units (HPU) are used throughout the subsea oil and gas industry, for subsea hydraulic power generation, and for running high pressure/high flow water pumps.

Motor-pump sets (depth rated to 3000m) for subsea trenching operations.

Silvercrest / Submersible Motor Engineering has recently manufactured and supplied two 265kw motor-pump sets for SMD-Hydrovision (England). The package comprised 265kw subsea motors, 2-pole, 3000v, 3ph, 60hz.

Together with Jetting Pumps (wet end only, operating at 2-pole, 60 hertz). The motors were a stainless steel construction, and the pumps Zinc Free Bronze. These motor-pump sets will be installed onto one of the world’s largest subsea trenching vehicles.

In addition, Silvercrest / Submersible Motor Engineering has manufactured and delivered in just eight weeks from order, two water

turbine pumps to CTC Marine Projects based in Teeside (England). The pumps will be used by CTC, in conjunction with Silvercrest / Submersible Motor Engineering submersible 260Kw motors, on their subsea plough and trenching vehicles worldwide.

The two Silvercrest SH-M6R submersible pumps with a 231mm OD impeller and a nominal operating speed of 3600rpm will be used as an alternative to the Hayward Tyler model M6-1 stage CI/BR/SS

submersible pump.

The Silvercrest pump although matching the performance of the Hayward Tyler unit, is specifically designed for horizontal operation providing a greatly increased reliability for use in horizontal and downward angled operation.

Construction materials:
Pump Castings - AS1830/T260 Grey Cast Iron.
Impeller Casting - PB1 Zinc Free Bronze.
Pump Shaft - SAF2205 Grade Stainless Steel
Shaft Bearings - PB1 zinc free bronze casing. Splined natural rubber.
Upthrust Bearing - PB1 Zinc Free Bronze.
Maximum Pump Thrust - 1470kg at Shut-Off.

Examples of Submersible motors we have manufactured.

SME ROV12-2, 48kW 65HP, 2-pole 3000/3/50, Aluminium Construction ROV Motor fitted with Rexroth A10VO28DFR1/31R-PSC62N00 Hydraulic Pump.

SME 10-inch motor, 110kW 2P 400V 50Hz Super Duplex Construction for Service Water Lift Pumps.

SME 6-inch motor, 1.1kW 6P 400V 50Hz Super Duplex Construction for a Hazardous Open Drains Pump.

SME 6-inch motor, 25kW 2P 400V 50Hz Super Duplex for Fire Water Jockey Pumps.

SME 36-inch, 550kW -540HP, 4 Pole, 10000/3/50, Super Duplex Construction Submersible Motor.

SME 36-inch, 1100kW-1475HP, 4 Pole, 10000/3/50, Super Duplex Construction Submersible Motor.

SME 12-inch 150kW 200HP 4 Pole 480/3/60 Super Duplex Construction Submersible Motor c/w 60M of Submersible Cable.

SME 36-inch 2200kW 6-Pole 6600/3/60Hz Super Duplex construction. Submersible Motor.

Submersible motors with 60hz frequency, 1180rpm speed, 6,6KV voltage, and 2000kW power rating. Complete with 50m power cable, and PT100 with 50m instrument cable. To be used as fire water pump drive units.

SME 36-inch, 2200kW, 6 Pole, 6600/3/60Hz, submersible motor. Super Duplex Construction .

SME 36-inch, 2200kW, 6 Pole, 6600/3/60Hz submersible motors.

SME 36-inch, 1800kW, 4 Pole, 6600/3/60Hz Submersible Motor.

SME 36- inch, 1000kW, 8 Pole, 6600/3/60Hz, Submersible Motor

SME ROV24-6, 400kW, 6 Pole, 4100/3/30-64, SS316 Construction Motor, Double Ended to have Water Pump on one end and a Hydraulic Pump at the other end. Max Axial Thrust 100kN, Max Radial Thrust 40kN.

SME SS132-4, 5.5kW, 4 Pole, 400/3/50, SS316 Construction Subsea Motor for Thruster application (reversing Propeller mounted directly on shaft).

SME ROV16-2, 400kW, 2-Pole, 3300/3/60, SS316 Construction Subsea Motor with integral Thrust Bearing and Interface to suit operation with Water Pump (vertical operation).

SME ROV12-2, 48kW 65HP, 2-pole 3000/3/50, Aluminium Construction ROV Motor fitted with Rexroth A10VO28DFR1/31R-PSC62N00 Hydraulic Pump. Motor to have Burton Connector for Power Leads. Fitted with Temperature Sensing and Water Detectors terminated on Subconn or similar connector. Power Conductor and Sensor Connector Blocks to be in the same position on the motor at opposite ends (or as requested). Epoxy coated for protection.

4kw submersible motor, to be connected to a worm drive and gearbox. Supply voltage 440V, three phase. SME ROV10-4, 4kw, 4 Pole, 440V 50/60Hz, SS316 Construction Subsea Motor

SME ROV14-4 75Kw/100HP, 4-pole, 3000/3/60, anodised aluminium subsea motor. Double-ended motor with Interface to suit Sauer and Kawasaki Hydraulic Pumps.

300 kW electric motor, 1800 rpm, 4160V 60Hz, electric supply, with adaptation flange to fit with Sauer Danfoss hydraulic pump 90 R 250 type, standard splined shaft.

Electric motors, 1800 rpm, 4160V 60Hz electric supply, each with adaptation flange to fit with Sauer Danfoss hydraulic pump 90R130 type, standard splined shaft. These motors are used on a undersea trenching machine.

SME ROV14-4, 66kW/88HP, 4-pole, 3000/3/60, Anodised Aluminium Subsea Motor, with Interface to suit Hydraulic Pump.

SME ROV10-2, 75HP, 2 – Pole, 3000/3/60, SS316 construction. Subsea Motor fitted with SMP 9WH-4 Stage NAB Construction Pump to provide 4000L/M at 5Bar or 1060GPM at 170ft Head. Motor is oil filled and externally compensated. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring.

SME ROV22-14, 120HP, 14-Pole, 3000/3/60, SS316 construction. Subsea Motor fitted with Jetech 15055-UW-H Subsea Quintuplex High Pressure Pump to provide 50L/M at 850Bar. Motor is oil filled and externally compensated. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring.

SME ROV22-12, 120HP, 12-Pole, 3000/3/60, SS316 construction. Subsea Motor fitted with Jetech 100J3-UW-H Subsea Triplex High Pressure Pump to provide 46L/M at 850Bar. Motor is oil filled and externally compensated. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring.

SME ROV14, 200kW, 4-Pole, 1800rpm, 4000/3/60, Anodised Aluminium Construction Subsea Motor to Drive Hydraulic Pump. Interface to suit Hydraulic Pump.

SME ROV14-100HP 4 pole 3000/3/60 Anodized Aluminium Construction Motor fitted with Rexroth A10VO85DFR1/53R-PUC62N00 Hydraulic pump giving 145l/m at 207 Bar.

SME ROV10-4, 2kW, 4 pole, 3000/3/50, Aluminium Construction Subsea Motor, Direct couple to a Rexroth PG1XT5/1MR Gear Pump. Motor fitted with oily tube power connection .

SME ROV14-4, 250kW, 4 Pole, 3000/3/50, SS316 stainless steel Construction Subsea Motor .

SME ROV10-2, 3.5kW, 2-Pole, 1000-3000V(customer to choose), 60Hz, SS316 Construction Subsea Motor. Seaconn Power Connector

SME ROV10-4, 7.5kw, 4 Pole, 2400/3/5-60, Aluminium Construction Subsea Motor. For Perry ROV TMS.

200kw, 4160v submersible subsea motors ready for shipping to an offshore customer.

Some recent submersible subsea and ROV motor and HPU projects for our subsea clients, have included the following:

Our motors are manufactured to the clients exact requirements as indicated in the final specification, and the SME drawings.

a) Submersible motors each 550Hp, 50Hz, 2-poles (2900rpm), at 6000v. This being for a major project, that will couple Kazis pumps (turbine type suitable to enter Bore holes) with Silvercrest/Submersible Motor Engineering motors. All motors to have NEMA flange to connect with the pumps. Installation depth expected to be 350m.

b) SME 10-inch, 180kW 240HP, 2-Pole, 3600rpm, 480/3/60, SS316 construction Submersible Motor. c/w Inbuilt Heat Exchanger for High Ambient Temperature. Motor is Water Filled and Water Cooled.

c) SME 12 inch, 250kW 335HP, 2 Pole, 3600rpm, 1000/3/60, SS316 Construction Submersible Motor. c/w Inbuilt Heat Exchanger for High Ambient Temperature. Motor is Water Filled and Water Cooled.

d) SME ROV14, 150Kw, 4 Pole, 3000/3/50, 1490rpm Stainless Steel Construction Subsea Motor designed to close couple to Rexroth A11VLO190DRS-11-LN-12N00 Hydraulic Pump. The motor will cool itself in the ambient seawater. Sensors and electrical connector are included in the motor price.

e) Two new submersible motors fitted with jetting pumps for a subsea trencher. SME ROV14-2, 150kw, 2-Pole, 3000/3/60, SS316 Construction Subsea Motor fitted with 250GM-4C-177-3550 Nickel Aluminium Bronze Pump to produce 210m3/Hr (two pumps 420m3/h). Absorbed Power 130kW with 151kW Non Overloading.

f) ROV54, Power: 1 HP. Operating Depth: 2000 meters, 440AC/3 Phase, 60Hz, and a speed of 3500 RPM. The motor to drive a submersible seawater centrifugal pump mounted onto the motor shaft. The shaft will be fully supported on both sides. The pump does not give pressure, just flow. SME ROV5-4, 1HP, 4Pole, 440/3/60, SS316 Construction Motor, to drive Water Pump.

g) Submersible electric motor with the shaft and flange modified to meet the clients exact technical requirements. SME ROV10-6, 7kW, 6-Pole, 440/3/50, 1000rpm, Duplex Construction. Externally Compensated Subsea Motor to close couple to Worm Gearbox 30-40:1 suitable for operation during 30G Vibration.

h) SME ROV8-4, 5HP, 4 Pole, 240/3/60, Aluminium Construction Subsea Motor to Close couple to your Hydraulic Pump.

i) SME ROV10-4, 40kW, 4 Pole, 3000/3/60, SS316 Construction Subsea Motor fitted with PTS Sterling 350C-1, 316SS Submersible pump to deliver 88 litres per second at 21 meters total developed head. Duty Power: 27.5 kW. Duty Thrust: 575 kg, NOL Power: 28.2 kW. Shut Head Thrust: 860 kg.

j) Two SME ROV10-2, 22kW, 2 Pole, 300/3/60 SS316 Construction Subsea Motors, fitted with PTS Sterling 200E-1, 316SS Submersible pumps to deliver 44 litres per second at 21 meters total developed head. Duty Power: 16.6 kW. Duty Thrust: 250 kg, NOL Power: 17.5 kW. Shut Head Thrust: 400 kg.

k) Water Filled Submersible motor for operation in a shaft containing potable water. Motor to be suitable for 220 kW at 1485 rpm on 400 volt, 3 Ph 50 Hz supply. Maximum Water temperature 15 deg C. SME 14-INCH, 300HP 220Kw, 4- Pole, 400/3/50 SS316 Construction Submersible Motor. Flange and Shaft requirements as per the clients specification.

l) SME ROV14-2, 90kw, 2 Pole, 3000/3/60 SS316 Construction Submersible Oil Filled Motor coupled to Hydroflo Pump Model 9HH-2 stage Water Pump to Provide 5000 L/m at 7 Bar. Pump Discharge size advised by the Client.

m) SME ROV16-2, 400kW, 2-Pole, 3300/3/60, SS316 Construction Subsea Motor with integral Thrust Bearing and Interface to suit operation with Water Pump (vertical operation).

n) 15kw submersible motor, submerged up to 10m (to drive a hydraulic pump). 400vac, 3 phase, 50Hz. Speed 1465rpm. Motor to be placed in a hydraulic reservoir, or clean water pod (client to select). Motor to be oil free. Stainless steel construction. SME ROV10-4, 15kw, 4 Pole, 400/3/50, SS316 Construction Subsea Motor (Air Filled).

o) Three 200Kw motors, 4000v, 60hz, 1800RPM, Anodised aluminium construction, to be fitted to a new underwater excavator. To be mounted with hydraulic pumps. ROV14, 200kW, 4-Pole, 1800rpm, 4000/3/60, Anodised Aluminium Construction Subsea Motor to Drive Hydraulic Pump. Interface to suit Hydraulic Pump. Flange and Shaft as required by client.

p) Replacement 20HP, 880v, 60Hz, 3 phase, submersible motor for a hydraulic power pack. Foot mountings are adjustable. SME.ROV6-20 submersible motor.

q) Three submersible motors for 200m water depth, rated for VSD. To operate pumps that will rotate between 300 and 600 rpm. The gearbox having a reduction of 3.5. Motor speed has to be within +/- 1000 and 2000 rpm.

r) ROV14, 75HP / 55kW, 4 Pole, 1800rpm, 3000/3/60, Aluminium Construction Subsea Motor. Epoxy coated for protection or SS316.

s) ROV14, 100HP / 75kW, 4 Pole, 1800rpm, 3000/3/60, Aluminium Construction Subsea Motor. Epoxy coated for protection.

t) Two Parker F11-150 hydromotors mounted on gearbox. Max rotations per motor: 2467 rpm. Max. torque per motor: 484 Nm. Most used case: Max rotations per motor: 1337 rpm. Max torque per motor: 131 Nm. We suggest our ROV144-130kW (175Hp), 4P, 3300V, 82Hz, 2500 RPM, motor. At the slower speeds the performance will match the requirements of roughly: 25kW, 1811 Volts, 45Hz, for the 130kW motor. It is understood that these motors will be running on a VVVF Drive, and that the Drive Output Voltage will be roughly proportional to the Hz. Motors are externally compensated so depth can be as much as 3000m.

u) Three Parker F11-250 hydromotors mounted on a gearbox Max rotations per motor: 2230 rpm. Max. torque per motor: 864 Nm. Most used case: Max rotations per motor: 1141 rpm. Max torque per motor: 278 Nm. We suggest our ROV164-210kW (280Hp), 4P, 3300V, 74Hz, 2250 RPM motor. At the slower speeds the performance will match the requirements of roughly: 40kW, 1688 Volts, 38Hz, for the 210kW motor. It is understood that these motors will be running on a VVVF Drive and that the Drive Output Voltage will be roughly proportional to the Hz.

v) A submersible motor for use on a ROV with a depth rating of maximum 50 meters in seawater. Double shaft motor 56 kW, 3000V, 3-phase 60Hz, 1800 rpm. On each side of the motor a pump unit will be fitted. SME ROV12-4, 56kW, 75HP, 4-Pole, 3000/3/60, Aluminium Construction Subsea Motor to direct couple Hydraulic Pumps to both ends. This will be a motor with Female Shaft, and close couple the pump to the motors using a face seal against the pump.

w) A subsea electric motor 3,5 kW, 60Hz, 1000 vac or more (<3000V) with the following characteristics. Water depth 3000m, material AISI 316L, interface with Seacon connector, service intermittent (on 20 seconds per hour) and suitable for six month (long dive, not operative). Torque 12/15 Nm, 2900/3000 rpm, to be coupled to a centrifugal pump, powered through 3200 meters of umbilical. SME ROV10-2, 3.5kW, 2-Pole, 1000-3000V(customer to choose), 60Hz, SS316 Construction Subsea Motor. Seaconn Power Connector.

x) A 3300vac, 100HP, submersible motor, 3phase, 60hz. 1750RPM. To be used to drive a hydraulic pump. Standard shaft size and flange for a 40gpm pump. ROV14-4, 100HP, 4-Pole, 3300/3/60, Aluminium Construction, Subsea Motor to drive Hydraulic Pump . Flange and Female Shaft to suit your Pump. Can be offered in SS316 Construction if required, instead of Aluminium.

y) Submersible motors to match with Rexroth hydraulic pumps. 30Kw, 4P, 380V / 50HZ submersible motor to match with 4VSO40DR/32R-PPA Rexroth pump. Oil temperature at 0-80 degrees. Horizontal mounting, with hollow shaft. The motors to be contained in a Hydraulic oil bath. 45kw submersible motor to match with A4VSO71DR/32R-PPA Rexroth pump. 75kw submersible motor to match with A4VSO180DR/32R-PPA Rexroth pump. SME ROV10-4, 30kW, 4 Pole, 380/3/50, SS316 Construction Submersible Motor to direct Couple to A4VS040 Hydraulic Pump. SME ROV10-4, 45kW, 4 Pole, 380/3/50, SS316 Construction Submersible Motor to direct Couple to A4VS071 Hydraulic Pump. SME ROV14-4, 75kW 4 Pole 380/3/50 SS316 Construction Submersible Motor to direct Couple to A4VS0180 Hydraulic Pump.

z) An electric submersible motor to power a submersible ROV TMS. Power 17.5kw, Speed 1800rpm, and Voltage 3000v at 60hz. To be mated with a hydraulic pump ( Parker PV016 R1K1T1N MMC piston pump). SME ROV10-4, 17.5kW, 4 Pole, 1800rpm, 3000/3/60, Aluminium Construction Subsea Motor to drive Parker Hydraulic Pump. SS316 motor construction also available.

a1) The rewire and service of two 150hp, 1750rpm, 3000/3/60, Curvetech motors. We are able to offer a Full Factory Rewind and service of Curvetech 150hp motors. Our standard refurbishment programme includes the following:

• Strip down and through inspection of the complete motor.
• Cleaning and anti-corrosion treatment as required.
• Shaft seal replacement (as may be required)
• Drive end-bearing replacement if required.
• Motor Insulation and Dynomometer testing.
• Motor rewind.
• Rebuild of the complete motor, test and despatch by sea or airfreight.

Any further work deemed necessary as a result of the factory inspection will be quoted separately, and a decision given by the customer as to the course of action required on an item-to-item basis.

b1) Submersible motors to match with Rexroth hydraulic pumps. 30Kw, 4P, 380V / 50HZ submersible motor to match with 4VSO40DR/32R-PPA Rexroth pump. Oil temperature at 0-80 degrees. Horizontal mounting, with hollow shaft. The motor to be contained in a Hydraulic oil bath. We are pleased to offer a highly modified Cast Iron Motor (30kw, 4-pole, 380/3/50, suitable for running immersed in an oil bath, with a special Flange and Female Shaft to accept the Rexroth hydraulic Pump.

c1) Subsea motor 300kW, 3.3kV, Double Ended Drive for Hydraulic Power. SME ROV18-4, 300kw, 4 Pole, 3300/3/60, SS316 Construction Subsea Motor.

d1) A submersible electric motor to drive a dredging pump, in a water depth of 20m. SME ROV18-4 ,400kW 530HP, 4 Pole, 400/3/50, SS316 Construction, Subsea Motor with 20m of Cable terminated in Bulkhead on the motor. Motor with RTD's and Water Detector.

ROV Motors.

1) Motor 1: ROV6, Motor: ROV62, 4kW, 5HP, 2 Poles, Max Voltage: 1200Vac, Typical Application: Hydraulic Power Pack.

2) Motor 2: ROV10, Motor: ROV104, 8.7kW, 12HP, 4 Poles, Max Voltage: 1000Vac, Typical Application: Hydraulic Power Pack.

3) Motor 3: ROV10, Motor: ROV104, 20kW, 27HP, 4 Poles, Max Voltage: 1320Vac, Typical Application: Hydraulic Power Pack.

4) HPU for your underwater subsea project. SME ROV14-4, 185kW 200HP, 4 Pole, 3000/3/60, Aluminium Construction Subsea Motor coupled with Rexroth A11VL0190 Hydraulic Pump to deliver 285 LPM at 310 Bar.

5) High voltage motor-pump sets that will power-up the hydraulic power unit on an ROV. The requirements being 3000VAC 50Hz, 15kW, 1500rpm (motor), 20 Lpm (hydraulic fluid flow rate), 21 Mpa (pump outlet pressure). Two units for 1000msw and one unit for 1500msw. SME ROV10-4, 15kW 20HP, 4 Pole, 3000/3/50, Aluminium Construction Subsea Motor, Coupled to Rexroth A10VSO18DFR Hydraulic Pump to give 20L/m at 21 Mpa. Epoxy coated for protection.

Submersible motors for operations at 6000m water depth.

We can offer our SME ROV22-12, 150kW, 12-Pole, 500rpm, 3300/3/50, SS316 Construction Subsea Motor. This motor will be manufactured to your exact requirements, and to interface with your submersible pump.

SME ROV14-2, 186kW 250HP, 2-Pole, 3300/3/50, SS316 Construction Subsea Motor, with Flange and shaft to interface with Water Pump.

Submersible Motor. Power 15 kW, Speed 2910 1/min, voltage 3.3kV, working depth 300m. SME ROV10-2, 15kW 20HP, 2-Pole, 3300/3/50, SS316 Construction Subsea Motor, with Flange and shaft to interface with Water Pump.

SME 400kw 4-Pole 1500rpm 3300/3/50 Submersible Motor.

SME 400kw 4 Pole 1500rpm 6600/3/50 Submersible Motor.

SME 145kw 8 Pole 1500rpm 3300/3/50 Submersible Motor.

SME 145kw 8 Pole 1500rpm 6600/3/50 Submersible Motor.

SME ROV18-4, 300kW, 4 Pole, 1800rpm, 3000/3/60, SS316 Construction Subsea Motor to drive Hydraulic Pump.

SME ROV10-4, 40kW, 4 Pole, 1800rpm, 3000/3/60, SS316 Construction Subsea Motor to drive Hydraulic Pump.

SME 10-inch, 37kW 50HP, 2 Pole, 380/3/50, Ni Al Br Construction Submersible Motor, with Modified Shaft and Flange to replace a Hayward Tyler MS 201-50 Motor and pump.

SME 10-inch, 37kW 50HP, 2 Pole, 380/3/50, Super Duplex Construction Submersible Motor with Modified Shaft and Flange to replace a Hayward Tyler MS 201-50 Motor and pump.

SME ROV14, 250kW, 4 Pole, 3000/3/50, SS316 Construction Subsea Motor fitted with A4VG250EP4D1/32R-NSD10F001DP Hydraulic Pump.

SME ROV14, 250kW, 2 Pole, 3000/3/50, SS316 Construction Subsea Motor to Drive Water Pump.

SME ROV14-4, 60kW, 4 Pole, 3000/3/50, SS316 Construction Subsea Motor fitted with A4VG40EP4D1/32R-NSC02F013DP and A10VO28DFR/31R-PSC62K01 Hydraulic Pumps at either end.

SME ROV14-4, 150kW 200HP, 690/3/60, Anodised Aluminium Construction Subsea Electric Motor. Fitted with a Rexroth A11VLO260LRDS/11R-NTD12N00 (CW ROTATION) PUMP-PISTON-VARIABLE at one end, and a Rexroth AZPW-2x-019-022LRRXXMB-SO593P (CCW ROTATION) PUMP-SINGLE-GEAR-SAE`A` 19cc, at the other end. Motor will have Oily tube for Power, and Subsea Connector for Temperature and Water Ingress Sensors. Motor available in SS316 stainless steel if preferred.

SME ROV10-4, 4kw, 4 Pole, 440V 50/60Hz, SS316 Construction Subsea Motor .

Motor Rewinds and Refurbishment.

Our standard motor refurbishment and rewind programme includes the following:

• Strip down and through inspection of the complete motor.
• Cleaning and anti-corrosion treatment as required.
• Shaft seal replacement (as may be required)
• Drive end-bearing replacement if required.
• Motor Insulation and Dynomometer testing.
• Motor rewind.
• Rebuild of the complete motor, test and despatch by sea or airfreight.

SILVERCREST / SME manufacture Submersible motors, ROV motors, Subsea electric motors to your exact technical specification.

We also offer complete submersible electric motor rewinds, rebuilding, electrical conversion, and construction modification.

SILVERCREST / SME can repair, rewind, and completely rebuild the following listed motors.

Alstra, Aturia, Bamsa, B. J., Elmaksan, Exodyne/EEMI, G.E., Hayward Tyler, Hitachi, Mercury, Oddesse, Pleuger, Saer, S.M.E., Subteck, Sumo, Sun Star,

U.S.

6.6Kv Motors Available.

We have manufactured many 6.6kV motors, mainly Submersible Pump Motors for various Mining, and Offshore applications. Usually we supply to Pump Manufacturers who fit these motors to their pumps. We can offer the following motors, subject to agreed technical drawings:

SME ROV22-4 300kW 4 Pole SS316 Construction 6600/3/60 Subsea Motor to drive Hydraulic Pump.

SME 400kw 4 Pole 1500rpm 6600/3/50 Submersible Motor.

SME 145kw 8 Pole 1500rpm 6600/3/50 Submersible Motor.

SME ROV18-4 300kW 4 Pole SS316 Construction 4100V Subsea Motor to drive Hydraulic Pump.

SME ROV22-4 300kW 4 Pole SS316 Construction 4500/3/60 Subsea Motor to drive Hydraulic Pump.

The method of construction changes at 4100V from Random Wound to Formed Coils so there is a jump from 4100V to the 4500V motor. The 4500V motor is constructed very similarly to the 6600V Motor.

Silvercrest will bespoke manufacture virtually any shape and size of submersible motor and submersible pump required for subsea operations. We can offer a wide range of HPU and motor-pump sets complete, subject to any modifications, and changes you may require. For example:

SME ROV12-2 48kW 65HP 2-pole 3000/3/50 Aluminium Construction ROV Motor fitted with Rexroth A10VO28DFR1/31R-PSC62N00 Hydraulic Pump. Motor to have Oily Tube connection for Power Leads. Fitted with Temperature Sensing and Water Detectors terminated on Subconn or similar connector. Epoxy coated for protection.

SME ROV14, 200kW, 268HP, 4 Pole, 3000/3/50, 1490rpm Stainless Steel Construction Subsea Motor designed to close couple to Rexroth A11VLO190DRS-11-LN-12N00 Hydraulic Pump.

SME ROV10-4, 50HP, 4-Pole, 1000-3000/3/50 Anodised Aluminium Construction Subsea Motor. Fitted with Rexroth A10VO45DFR1/3xR-PSC62N00 Hydraulic Pump to provide 66L/m at 200 Bar. Motor fitted with Oily Tube connection for Power and Earth. Temperature and Water Detectors terminated in Subconn Connector. Hydraulic pump close coupled to Motor.

SME ROV14-2 motor, 265kw 2-pole 3000/3/60 with Stainless Steel Construction. Fitted with a PTS Sterling 350D-1 ZFB Pump (wet end only). Operating at 2- pole, 60 hertz. Thrust developed at duty: 1820kg. Thrust at Shut-off: 3016kg. Approx. length of pump: 750mm. Bowl diameter: 340mm.

SME ROV14-2 300kw 2 pole 3000/3/60 Oil filled Stainless Steel Motor with In built Circulation System and Heat Exchanger coupled to a Sterling 300M-3 Zinc Free Bronze Pump with a duty of 828cu.m/hr at 9 Bar.

ROV20-4 type motors, 4 pole/6600vac/3 phase/60hz, with stainless steel construction. Double Ended for fitment with Sauer hydraulic pumps Series-90, with Subsea Connectors for Power and Sensors. We can offer the ROV20 motor with shafts at both ends, to mate with the Sauer Series 90 pumps .

SME ROV24-6, 400kW, 6-Pole, 4100/3/30-64, SS316 Construction Motor. Double Ended to have Water Pump at one end, and the Hydraulic Pump at the other end.

SME ROV228, 325kW, 8-pole, 3300/3/60, SS316 construction, Subsea Motor to drive Water Pump.

SME 36-inch 2200kW 6-Pole 6600/3/60Hz Super Duplex construction. Submersible Motor manufactured for a shaft down application. Motor fitted with 4 x PT100 (3 internally in the windings, 1 on the thrust bearing ). Suitable for connection to CD pump.

SME 36-inch, 550kW -540HP, 4 Pole, 10000/3/50, Submersible Motor, Super Duplex Construction.

SME 36-inch, 1100kW-1475HP, 4 Pole, 10000/3/50, Submersible MotorSuper Duplex Construction.

ROV and Subsea Deep Ocean Motors.

Silvercrest / Submersible Motor Engineering design, manufacture, and supply, submersible electric motors for deep well submersible pumps, SUBSEA motors, and ROV electric motors for SUBSEA equipment. Also submersible electric motors for all your special purpose submersible electric motor requirements. We offer a complete motor repair and rewind service for all name brands of submersible motors, both water and oil filled.

ROV motors for new underwater vehicles, ROVs, and for all subsea applications.

We repair, service and rewind all existing submersible motors (from any company).

Our submersible, subsea and ROV motors are designed and engineered to the highest specification, with a precision fit. Strict quality controls ensure long service life, and proven subsea service.

Motors can be engineered and designed to exactly you’re your specific applications and requirement.

Our motors can be both water and oil filled.

We design and manufacture special application submersible motors for specific requirements.

Rewind and service of 150kw Curvetech motor.

Full Factory Rewind and service of a 150/200hp, 1750rpm, 3000/3/60, Curvetech motor at our factory in Perth Australia. Our standard refurbishment programme includes the following:

• Strip down and through inspection of the complete motor.
• Cleaning and anti-corrosion treatment as required.
• Shaft seal replacement (as may be required)
• Drive end-bearing replacement if required.
• Motor Insulation and Dynomometer testing.
• Motor rewind.
• Rebuild of the complete motor, test and despatch by sea or airfreight.

Any further work deemed necessary as a result of the factory inspection will be quoted separately, and a decision given by the customer as to the course of action required on an item-to-item basis

SPECIFICATIONS FOR SME SUBSEA ELECTRIC MOTORS.

SME can design and build SUBSEA motors to suit any requirement due our totally flexible design capabilities: Flexible External Dimensions to suit all applications. Dimensions to allow drop in replacement for existing units. Anodised aluminium, or, 316 stainless steel. Power drive to load using an output shaft with a standard coupling, or, close coupled, etc. Single drive shaft, or, a drive shaft at both ends, (double shaft extension). SME can design and build a motor with a completely new lamination to meet special design requirements, if necessary. SME design their motors so they do not run hot. Typical motors can run on deck for at least 10 minutes on full load, with no cooling, without overheating. The motors are designed to be compact in size and suitable for heavy duty applications, like trenching. If weight is important SME can design the motor for minimum weight by utilising an aluminium construction and a hollow motor shaft, etc., while still ensuring the motor is generously rated for full load operation. If the motor is going to drive a hydraulic pump we recommend a close coupled arrangement to save the weight of the coupling and the coupling housing. SME can design and build motors for all voltages from 24 Volts to 6600 Volts with 50Hz or 60Hz frequencies, or for VVVF requirements. High Voltage motors can have random stator windings, or formed coils, depending on space and weight constraints. The winding wire for the High Voltage motors is double insulated and passes a twisted wire test at 16,000 volts and is rated up to 155 Deg.C. All windings are designed to keep 'turn to turn' voltage to a minimum. All winding materials and cables, etc. are specially selected to be suitable for use in hydraulic oil. In general the SME SUBSEA motors have low loss lamination steel (3 Watts/kg), which allows for higher flux densities, and less heat, with less material and weight. All motors are oil filled and we recommend hydraulic oils for good lubrication characteristics in preference to electrical oil which has better di-electric capabilities, but worse lubrication capabilities. If motors are going to drive a water pump SME can design the motor to take the thrust load from the pump, and keep the sea water out of the motor with a single or double mechanical seal arrangement. Thruster motors can be designed and built for voltage/speed control, which is a relatively simple speed control system, and they can also be built with a thrust bearing incorporated to take the thrust load from the impeller. To ensure the integrity of the motor housing SME does not use castings. All components are machined from solid or from extrusions. The external aluminium components are typically 6061 T6 marine grade aluminium and hard anodised to a military specification. All ball bearings are from well known brands such as SKF, FAG, or NSK. Oil seals are high temperature and typically made from Viton. Mechanical seals are typically Burgmann. All hardware used on SME SUBSEA motors is 316SS. All fixing holes are blind except the "oil in" and "oil out" fittings and the stator pack fixing bolt, if applicable. The preferred power cable entry system for SME motors is to use an "oily tube" connected to an adaptor which is part of an oil tight rubber gland which is fixed to the stator frame. SME do not recommend bringing the power cables through the endshields of the motor because this creates additional complications when the motors are stripped down during service, because the endshields cannot be readily removed from the stator. Subsea connectors can be offered as an alternative to the Oily Tube if requested. SME strongly recommend that the motors are supplied with PT100s fitted in the windings and also in the bearings and that the internal motor temperatures are monitored and set up to alarm if the temperatures rise above the "norm". SME can also offer additional protection with a water detector, etc. The auxiliary connections for PT100s, etc. can be made through standard high pressure, water-tight, plug and sockets as supplied by "Subconn", "Impulse", and "Burton". These are also fitted to a connection block on the stator, not on the endshield. All finished motors are pressure tested to ensure they are "oil tight" and suitable for compensated operation down to 4000 metres. All motors are rated for continuous operation and all prototype motors are full load performance tested rated voltage and rated frequency to confirm their performance characteristics. All motors can be issued with a "Type Test Certificate" or even full load tested at additional cost, if required. SME can also offer to arrange for hydraulic pumps to be set up and tested on the motors at rated voltage and frequency. SME can offer to supply Hydraulic Power Units complete with the addition of a customer specified Hydraulic Pump. SME is a fully quality assured company to ISO 9001.2000 for "Design, development, manufacture, and testing of submersible electric motors and electric motors for remotely operated vehicles". SME Subsea motors can be designed and built for all subsea applications, such as ROVs, Trenchers, Ploughs, Submarines, Dredges, etc. All makes of subsea motor can be serviced, repaired and tested by SME. In some cases the original motors can be significantly upgraded. If you are having problems with your existing subsea motors please contact SME - we are keen to help and we are very price competitive. At SME we are continually working on improving the performance of our products and for this reason we reserve the right to make changes without notice to any of the data in this brochure. Please contact us direct for confirmation of any drawing dimensions or performance data.

SUBSEA MOTORS and ROV MOTORS.
SILVERCREST MOTOR ENGINEERING are designing and building specialized motors for use SUBSEA for the offshore industry. These motors are usually made to order and vary from 1kW to 600kW, from 400 to 4160 Volts,50 or 60 Hz, 2-Pole or 4- Pole. There are two common methods of construction - stainless steel construction or Marine Grade aluminium that is Black anodized to resist corrosion. These motors are usually oil filled and pressure compensated and the common operating voltages are between 2300 volts and 3300 volts - even for small 5kW motors. Some of these motors operate at depths down to 4000 meters.

SILVERCREST / SME MOTORS FOR OUR SUBSEA CLIENTS.

• ROV submersible motors.

We are pleased to be able to offer a replacement motor to meet your specific requirements.

Volts 3000VAC

Poles 2

Speed 3450 RPM

Full Load Torque 769Nm

Start Torque 1187Nm

Depth Rating 3000 Mts

Compensation Oil filled - external compensator (not included)

Housing 316 Stainless Steel

Mounting Vertical

Shaft Spec to be advised

KW 290kW @60 Hz

HP 390HP @ 60Hz

Weight 404kG max

Length 1000mm max

EXAMPLES OF OTHER SUBMERSIBLE AND SUBSEA MOTORS WE HAVE MANUFACTURED.

SME 36-inch, 550kW -540HP, 4 Pole, 10000/3/50, Super Duplex Construction. Submersible Motor.

SME 36-inch, 1100kW-1475HP, 4 Pole, 10000/3/50, Super Duplex Construction Submersible Motor.

SME 36inch, 2200kW, 6 Pole, 6600/3/60Hz submersible motors

SME 36 inch, 1800kW, 4 Pole, 6600/3/60Hz Submersible Motor

SME 36 inch, 1000kW, 8 Pole, 6600/3/60Hz, Submersible Motor

55HP hydraulic power pack motors

ROV 14-55HP motor, 3000V, 60Hz, 4 Pole Motor (with pump attached).

Final dimensions and shaft arrangement to be confirmed by customer, foot mountings are adjustable and can be manufactured to suit customer requirement.

Volts 3300VAC / 60hz / Three Phase

Poles 4

Speed 1750 RPM

Depth Rating 3000 Meters nominal

Compensation Oil filled - external compensator

Housing 316 SS or Hard Anodized Aluminium.

Mounting Horizontal

Shaft TBC

KW 41kW @ 60 Hz

Insulation Rating >16kV @ 140 deg C (Mylar)

Shaft Seals Bergman mechanical seals.

300 kW PUMP MOTORS.

We can offer you submersible motors with the following specification: -

Volts 3300VAC / 60hz / Three Phase

Poles 2

Speed 3500 RPM

Depth Rating 3000 Mts nominal

Compensation Oil filled - external cooler/compensator included

Housing 316 SS

Mounting Vertical (As per details to be supplied)

Shaft See above (As per details to be supplied)

KW 300kW @ 60 Hz

Insulation Rating >16kV @ 140 deg C (Mylar)

Shaft Seals Bergman mechanical seals.

Single pump motor to replace a Hayward Tyler Sumo 260kW motor.

We can offer the ROV14 motor with shafts at both ends; to mate with 3 x tandem mounted hydraulic pumps on one end, and a 2-stage Plueger MI16 water pumpset on the opposite end. The female spline can be manufactured to mate with the supplied pumpset.

Our purpose built pump motors are designed specifically for use in the horizontal axis. Unlike a down hole pump motor such as the HT Sumo, our motors do not use pivot shoe thrust assemblies. As a result our motors are compensated for depth pressure using oil rather than distilled water as in the case of down hole pump motors.

Unlike most motor manufacturers, we manufacture our own core laminations on site, affording maximum flexibility in design. We can bespoke manufacture virtually any shape of motor you may require.

In this 260kW model, rather than use the pivot shoe arrangement, we fit heavy-duty tapered roller bearings to the rotor to manage the water pump induced end loads. Thus increasing the reliability and service life of the motor by a factor of 10 or more when used in the horizontal axis.

Our superior Mylar coated windings are the ultimate in winding coating technology. Mylar coated windings have an insulation rating of >16kV at a temperature of 140 degs C. No other winding coating even comes close to this standard.

We can offer you submersible motors with the following specification:-

Volts 3000VAC / 60hz / Three Phase

Poles 2

Speed 3500 RPM

Depth Rating 3000 Mts nominal

Compensation Oil filled - external compensator (not included)

Housing 316 SS

Mounting Horizontal (Details to be confirmed)

Shaft See above (Details to be confirmed)

KW 260kW @ 60 Hz

Insulation Rating >16kV @ 140 deg C

Shaft Seals Bergman mechanical seals. (Tandem seals available)

The final specification will need to be agreed upon placement of an order. Insulation rating using Mylar windings.

ROV 14 260kW Pump Motor under construction

250kw/ 3300V / 50Hz / 4 Pole motors for Hydraulic Power Packs.

New submersible motors, for your hydraulic power pack project The requirement being for 250kw, double ended drive, 3300V / 50Hz, 4 pole, motors with subsea connector to be defined.

ROV20-4 motors, 250kw/4 pole/3300vac/3 phase/50hz, with stainless steel construction. Double Ended for fitment with hydraulic pumps, with Subsea Connectors for Power and Sensors. In addition we can supply if requested cooler/heat exchangers (at additional cost), for each of the motors purchased.

Our purpose built pump motors are designed specifically for use in the horizontal axis. Unlike a down-hole pump motor such as the HT Sumo, our motors do not use pivot shoe thrust assemblies. As a result our motors are compensated for depth pressure using oil rather than distilled water as in the case of down-hole pump motors. Our superior Mylar coated windings are the ultimate winding coating technology. Mylar coated windings have an insulation rating of >16kV at a temperature of 140 degrees C. No other winding coating even comes close to this standard.

SME ROV20-4 submersible motor.

Volts 3300Vac / 50hz / Three Phase / 4 Pole.

Speed 1470 RPM @ 50 Hz

Depth Rating 3000m nominal

Housing 316 SS

Mounting Horizontal

Shaft See above

KW 250kw @ 50 Hz

Insulation Rating >16kv @ 140 deg C

Shaft Seals Bergman mechanical seals. (Tandem seals available)

Instrumentation Motor fitted 1 x RTD water detector, and temperature probe.

Connectors Power and Sensors (To be agreed).

Eff 92.4%

Power Factor .85

Weight 565kg

SME ROV10-2, 75HP, 2-Pole, 3000/3/60, SS316 construction.

Subsea Motor fitted with SMP 9WH-4 Stage NAB Construction Pump to provide 4000L/M at 5Bar or 1060GPM at 170ft Head. Motor is oil filled and externally compensated with oil. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring.

SME ROV22-14, 120HP, 14-Pole, 3000/3/60, SS316 construction.

Subsea Motor fitted with Jetech 15055-UW-H Subsea Quintuplex High Pressure Pump to provide 50L/M at 850Bar. Motor is oil filled and externally compensated with oil. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring. This unit is operating at the lower end of its range and can have an increased output if necessary.

SME ROV22-12, 120HP, 12-Pole, 3000/3/60, SS316 construction.

Subsea Motor fitted with Jetech 100J3-UW-H Subsea Triplex High Pressure Pump to provide 46L/M at 850Bar. Motor is oil filled and externally compensated with oil. Tube connection for Power and Subconn or equivalent connector for Water Detector and Temperature Monitoring.

SME 400kw 4-Pole 1500rpm 3300/3/50 Submersible Motor.

SME 400kw 4-Pole 1500rpm 6600/3/50 Submersible Motor.

SME 145kw 8-Pole 1500rpm 3300/3/50 Submersible Motor.

SME 145kw 8-Pole 1500rpm 6600/3/50 Submersible Motor.

SME ROV102, 40kw, 2-pole, 380/3/50(or 60hz), 40Kw submersible electric motor, oil filled, with SS316 Construction. Speed 3000 rev/min. Starting Direct. Service continuous. Electric connection Seacon (connector fixed + flying to be moulded to umbilical). Installation Horizontal.

SME ROV14-2 200HP 150kW 2-pole 3000/3/60. Anodised Aluminium Construction Motor to suit operation with Water Jetting Pump. The exact Flange and Shaft requirements to be advised by the client.

SME ROV14-4 200HP 4-Pole 3000/3/60 SS316 Construction Subsea Motor to fit Close Coupled Hydraulic Pump. Rexroth Hydraulic Pump A11VLO260DRS-11RNSD21-N00 with Variable Displace and Max flow of 260L/M at 180 Bar.

SME ROV14, 200kW, 268HP, 4-Pole, 3000/3/50, 1490rpm Stainless Steel Construction Subsea Motor. Designed to close couple to Rexroth A11VLO190DRS-11-LN-12N00 Hydraulic Pump. The motor will cool itself in the ambient seawater. Sensors and electrical connector.

SME 50 HP/ 3300V / 60Hz / 4 Pole HPU Motor. ROV and trencher HPU motors.

RO144-150HP / 4 Pole / 3300VAC / 60Hz)

The motor in the photograph is a 150HP ROV HPU motor as delivered to Fugro Ltd for use on the FCV ROV. With modifications to the pump mount and shaft and foot mounts arrangements, to suit the Linde HPR160 hydraulic pump unit. This motor is available in either hard anodized marine grade Aluminium or in SS316 stainless steel construction.

150 HP HPU MOTOR.

Volts 3300VAC / 60hz / Three Phase

Poles 4

Speed 1750 RPM

Depth Rating 3000 Mts nominal

Housing Hard Anodized Aluminium (SS316 optional)

Length 671 mm

Diameter 350 mm

Height 390 mm

Mounting Horizontal

Shaft TBA

HP 150 HP @ 60 Hz

Insulation Rating >16kV @ 140 deg

Shaft Seals Bergman mechanical seals.

Cable Entry TBC

Sensors Water ingress x 2 / Temperature x 2 – TBC

400kW/ 3300V / 60Hz / 4 Pole motors for Hydraulic Pumps.

These motors being used to power Sauer Series-90-L250 hydraulic pumps. The requirement being for 400kw, single ended drive, 3300V / 60Hz, 4-pole, with subsea connector to be defined. The motors being required for an underwater vehicle.

ROV20-4 motors, 400kw/4 pole/3300vac/3 phase/60hz, with stainless steel construction. Single ended for fitment with Sauer hydraulic pumps Series-90-L250, with subsea connectors for power and sensors. Our purpose built submersible pump motors are designed specifically for use in the horizontal axis. SME motors are compensated for depth pressure using oil rather than distilled water as in the case of down-hole pump motors. Our superior Mylar coated windings are the ultimate in winding coating technology. Mylar coated windings have an insulation rating of >16kV at a temperature of 140 degrees C.

SME ROV20-4 submersible motor specification

Volts 3300Vac / 60hz / Three Phase / 4 Pole.

Speed 1750 RPM

Depth Rating 3000m nominal

Housing 316 SS

Mounting Horizontal

Shaft Splined shaft as below

KW 400kw @ 60 Hz

Insulation Rating >16kv @ 140 deg C

Water detector As per drawing

Connectors Power Oily tube connection. Sensors

Shaft-spline Pitch diameter = 41.275 [1.625]

Pressure angle = 30¢ª

Number of teeth = 13

Pitch = 8/16

ANSI B92.1-1970, class 5, fillet root side fit

Spline length 42.5mm

Thruster Motors.

SME ROV8-4, 5.5kW, 4 Pole, 400/3/50, SS316 construction Subsea Motor for Thruster application (reversing Propeller mounted directly on shaft).

This motor was designed as a thruster motor and has an in-built thrust bearing arrangement to handle thrust in both directions. The drawing is for a 2-pole motor but the 4-pole version would be a similar size. The motor mounting arrangements and shaft requirements can be modified to suit different customer applications.

Full Factory Rewind and service of 260kw motors.

Our standard refurbishment programme includes the following:

• Strip down and through inspection of the complete motor.
• Cleaning and anti-corrosion treatment as required.
• Shaft seal replacement.
• Drive end-bearing replacement if required.
• Motor Insulation and Dynomometer testing.
• Motor rewind.
• Rebuild of the complete motor, test and despatch by sea to UK.
• Burton power connector to be disconnected.
• 53mm Burgman seal upgrade
• All ports will be opened from 3/8 to ½ BSP as requested.
• Spot facing as requested.

Any further work deemed necessary as a result of the factory inspection will be quoted separately, and a decision given by the customer as to the course of action required on an item-to-item basis.

132Kw/ 1100v/2 pole/50hz/Foot Mount Motor.

A replacement 132kw Brook motor for use in a salt mine. We are pleased to be able to offer you our direct replacement SME 132kW/2P/1100V/50Hz/RC315S/M Foot Mount Motor. This unit will be very similar to the Brooke mine motor (Type: W-DF315SN. Serial number: B033586), and have the same voltage and feet spacing as the Brook motor.

Volts 1100VAC / 50hz / Three Phase

Poles 2

Speed 2975 RPM

Amps: 81A

Shaft TBC

Please note this is a standard air-cooled motor with the terminal box on top. It has no mining approvals or flameproof approvals. The Brook motor is fitted in a 315S-frame (508 and 406mm foot dimensions). The SME motor will be fitted in a frame with the same foot dimensions.

SME ROV104-65HP-3000V- 50HZ submersible motor.

Deepwater subsea motors for your 4500m ROV system. The motors to be used in the HPU (Hydraulic Power Units) of a 0hp ROV at a depth of 4500m without a TMS. The pumps for the HPU, will be Rexroth axial piston pumps, type AA10VSO71DRG/31R-PPA12N00. These are pilot controlled constant pressure pumps, with a displacement of 71cc/r, maximum output pressure 240bar, and shaft speed 1500rpm.

Our SME ROV104-65HP-3000V-50HZ Submersible Motor.

Construction in aluminium alloy. This motor will be manufactured to your exact requirements. Sensors: We have quoted a Subsea Connector to allow Pin Outs for 1 x RTD for Temperature, and 1 x Water Detector.

Power: We have quoted to supply 3m length of Oily Tube with Bulkhead Connectors to be mounted on the Main Junction Box.

The final specification and manufacturing drawings to be agreed.

6600V / 60Hz / 4 Pole motors / double end drive for Hydraulic Power Pack.

New submersible motors. These motors being used to power Sauer Danfoss Series-90-250 hydraulic pumps. The requirement being for either 400kw or 500kw motors, double ended drive, 6600V, 60Hz, 4-pole, with subsea connector to be defined. Our ROV20-4 type motors, 4-pole/6600vac/3 phase/60hz, with stainless steel construction. Double Ended for fitment with Sauer hydraulic pumps Series-90, with Subsea Connectors for Power and Sensors. We can offer the ROV20 motor with shafts at both ends, to mate with the Sauer Series 90 pumps that you intend using.

400kW/ 3300V / 60Hz / 4 Pole motors for Hydraulic Pumps.

New submersible motors. These motors being used to power Sauer Series-90-L250 hydraulic pumps. The requirement being for 400kw, single ended drive, 3300V / 60Hz, 4-pole, with subsea connector to be defined. The motors being required for an underwater vehicle.

Our ROV20-4 motors, 400kw/4 pole/3300vac/3 phase/60hz, with stainless steel construction. Single ended for fitment with Sauer hydraulic pumps Series-90-L250, with subsea connectors for power and sensors.

Our purpose built submersible pump motors are designed specifically for use in the horizontal axis. SME motors are compensated for depth pressure using oil rather than distilled water as in the case of down-hole pump motors. Our superior Mylar coated windings are the ultimate in winding coating technology. Mylar coated windings have an insulation rating of >16kV at a temperature of 140 degrees C.

SME ROV20-4 submersible motor specification

Volts 3300Vac / 60hz / Three Phase / 4 Pole.

Speed 1750 RPM

Depth Rating 3000m nominal

Housing 316 SS

Mounting Horizontal

Shaft Splined shaft as below

KW 400kw @ 60 Hz

Insulation Rating >16kv @ 140 deg C

Water detector As per drawing attached.

Connectors Power Oily tube connection. Sensors.

Interface Single ended to suit a Sauer series 90 L250 Hydraulic pump, splined shaft option F1.

Shaft-spline Pitch diameter = 41.275 [1.625]

Pressure angle = 30¢ª

Number of teeth = 13

Pitch = 8/16

ANSI B92.1-1970, class 5, fillet root side fit

Spline length 42.5mm

300kW/ 3300V / 60Hz / 4 Pole motors for Hydraulic Power Pack.

New submersible motors (with option for one additional motor to fulfil your spares commitment). These motors being used to power Sauer Series-90 hydraulic pumps. The requirement being for 300kW, double ended drive, 3300V / 60Hz, 4 pole, with subsea connector to be defined.

ROV20-4 motors, 300kw/4 pole/3300vac/3 phase/60hz, with stainless steel construction. Double Ended for fitment with Sauer hydraulic pumps Series-90, with Subsea Connectors for Power and Sensors. We can offer the ROV20 motor (as per the attached drawing) with shafts at both ends, to mate with the Sauer Series 90 pumps that you intend using. Our purpose built pump motors are designed specifically for use in the horizontal axis. Unlike a down-hole pump motor such as the HT Sumo, our motors do not use pivot shoe thrust assemblies. As a result our motors are compensated for depth pressure using oil rather than distilled water as in the case of down-hole pump motors. Our superior Mylar coated windings are the ultimate in winding coating technology. Mylar coated windings have an insulation rating of >16kV at a temperature of 140 degrees C. No other winding coating even comes close to this standard.

100 HP ROV Submersible Motor – Immediately Available.

Silvercrest-SME has placed a 100Hp submersible Rov motor (as illustrated below) on standby. For emergency availability to all Rov operators.

The motor has the following specification and is a direct drop in replacement for the Curvetech 100HP unit. The motor is presently set up to receive a Rexroth A10VSO140 pump, but can be modified to accept other pump models if required. The motor is brand new, direct from our factory and has been constructed specifically for this purpose.

ROV124-100HP, 4-pole, 3000v, 60Hz.

Mil Spec hard-anodised T6 hardened 6061 grade Aluminium construction, with all 316 hardware. Rotor dynamically balanced. Oil filled externally compensated. Fully performance tested on Dynamometer at rated voltage and frequency, subsea connectors for power and instrumentation. Designed for maximum electrical efficiencies to reduce full load currents. Motor designed for low operating temperatures to extend reliable lifespan. Specialised winding insulation system to ensure ng operating life even under the most arduous of duties. On Deck operation generally allowable.

Power 100 HP

Volts 3000V

Frequency 60 Hz

Poles 4

RPM 1770 RPM

Shaft Woodruff keyed (see attached drawing for detail)

Construction Hard Anodized Aluminium 6061-T6

Compensation Oil filled – external-not supplied

Power Connector Burton 5757-1236-002
Sensor Connector SubConn BH-4-M

SUBMERSIBLE MOTORS and PUMPS .

Silvercrest / Submersible Motor Engineering offer a wide range of electric submersible, subsea and ROV motors, together with hydraulic pumps and water pumps for subsea operations. We can supply ROV- HPU submersible motors from 5W to 400kW. Trenching HPU submersible motors from 100kW to 500kW, trenching jetting- pumps, plough HPU submersible motors, plough jetting-pump sets, turbine and centrifugal water pumps, hydraulic pumps, Rexroth pumps A7 and A10 series, and Sauer 90 series.

SME ROV14, 150Kw, 4 Pole, 3000/3/50, 1490rpm Stainless Steel Construction Subsea Motor designed to close couple to Rexroth A11VLO190DRS-11-LN-12N00 Hydraulic Pump. The motor will cool itself in the ambient seawater. Sensors and electrical connector are included in the motor price.

SME ROV14-2, 150kw, 2-Pole, 3000/3/60, SS316 Construction Subsea Motor fitted with 250GM-4C-177-3550 Nickel Aluminium Bronze Pump to produce 210m3/Hr (two pumps 420m3/h). Absorbed Power 130kW with 151kW Non Overloading. The final technical specification and manufacturing drawings to be agreed upon placement of the order by the client.

SME ROV24-6, 400kW, 6-Pole, 4100/3/30-64, SS316 Construction Motor. Double Ended to have Water Pump at one end, and the Hydraulic Pump at the other end.

SME ROV16-2, 400kW, 2-Pole, 3300/3/60, SS316 Construction Subsea Motor with integral Thrust Bearing and Interface to suit operation with your Water Pump (vertical operation). The final specification and manufacturing drawings to be agreed upon placement of the order. The motor will be manufactured to your exact requirements as indicated in your specification, and the SME drawings.

SME ROV12-2 48kW 65HP 2-pole 3000/3/50 Aluminium Construction ROV Motor fitted with Rexroth A10VO28DFR1/31R-PSC62N00 Hydraulic Pump. Motor to have Oily Tube connection for Power Leads. Fitted with Temperature Sensing and Water Detectors terminated on Subconn or similar connector. Power Conductor and Sensor Connector Blocks to be in the same position on the motor at opposite ends (or as required).

SME ROV228, 325kW, 8-pole, 3300/3/60, SS316 construction, Subsea Motor to drive Water Pump. Motor to include Water Detector and Temperature Detector terminated at Subconn Connector. Power terminated through Oily Tube Connection. Motor to have standard deep groove bearings absorbing no thrust. Motor for horizontal use. Motor designed for continuous operation and will provide at least two minutes of unloaded operation on deck. Epoxy coated for protection.

Submersible motor for operations at 6000m water depth. We are pleased to offer our SME ROV22-12, 150kW, 12-Pole, 500rpm, 3300/3/50, SS316 Construction Subsea Motor. This motor will be manufactured to your exact requirements, and to interface with your submersible pump.

SME ROV14-2, 186kW 250HP, 2-Pole, 3300/3/50, SS316 Construction Subsea Motor, with Flange and shaft to interface with Water Pump. Submersible Motor. Power 15 kW, Speed 2910 1/min, voltage 3.3kV, working depth 300m. SME ROV10-2, 15kW 20HP, 2-Pole, 3300/3/50, SS316 Construction Subsea Motor, with Flange and shaft to interface with Water Pump .

We can offer motors at both 3300v and 6600v. However in order to offer a detailed quotation, we will need additional information from you concerning the motor application, materials of motor construction that you require (SS316 is suggested), Pump Thrusts, Pump Interface, etc. Please email us as much information as ossible, and perhaps a pump drawing or technical data sheet. We will then revert back to you.

A submersible 280/300kW Electric motor, 3000VAC @60Hz, for subsea application (500uwm), 1800rpm (for Hydraulic pump coupling). We can offer our SME ROV18-4, 300kW, 4 Pole, 1800rpm, 3000/3/60, SS316 Construction Subsea Motor to drive Hydraulic Pump.

A 40kW electric motor, 3000VAC @60Hz, for subsea application (500uwm), 1800rpm (for Hydraulic pump coupling). We can offer our SME ROV10-4, 40kW, 4 Pole, 1800rpm, 3000/3/60, SS316 Construction Subsea Motor to drive Hydraulic Pump.

A 250kw, 4-pole, 3300/3/50 motor, SS316 Construction. Motor to interface with a A4VG250 Hydraulic Pump. We can offer you motors to meet your specific requirements. SME ROV14-4, 250kw /335Hp, 4-Pole, SS316 Construction, 3300/3/50 Subsea Motor. To Interface with your A4VG250 Hydraulic Pumps.

SME ROV18-4, 400kw, 4 –Pole, 3300/3/60, SS316 Construction, Subsea Motor. To suit Sauer Danfos 90L 250 ump. The final specification and manufacturing drawings to be agreed upon placement of the order.

A 7.5kw motor to replace an obsolete 7.5kW / 2000V / 4 pole / 60Hz Motor based on a Ziehl-Abegg winding set. We can offer you our SME ROV10-4, 7.5kW, 4 pole, 2000/3/60, Aluminium Construction Subsea with Burton Connector. Motor flange and shaft would be to suit pump type, and motor can be oily tube or connector. The final specification and manufacturing drawings to be agreed.

Subsea Digger (pictured above) fitted with SME ROV14-4 75Kw/100HP, 4-pole, 3000/3/60, anodised aluminium subsea motors. Double-ended motors with Interface to suit Sauer and Kawasaki Hydraulic Pumps.

SME ROV18-4, 260kW, 350 HP, 4 Pole, 3000/3/60, Duplex Stainless Steel Construction Subsea Motor. To drive close coupled Hydraulic Pumps ( Bosch Rexroth Pump A11VLO-260, and Bosch Rexroth Pump A10VSO-4).

SME ROV10-4, 40kW, 4 Pole, 3000/3/60, SS316 Construction Subsea Motor fitted with PTS Sterling 350C-1, 316SS Submersible pump to deliver 88 litres per second at 21 meters total developed head. Duty Power: 27.5 kW. Duty Thrust: 575 kg, NOL Power: 28.2 kW. Shut Head Thrust: 860kg.

SME ROV10-2, 22kW, 2 Pole, 300/3/60 SS316 Construction Subsea Motors, fitted with PTS Sterling 200E-1, 316SS Submersible pumps to deliver 44 litres per second at 21 meters total developed head. Duty Power: 16.6 kW. Duty Thrust: 250 kg, NOL Power: 17.5 kW. Shut Head Thrust: 400 kg.

SME ROV12-8, 3HP, 8 Pole, 480v 23Hz, Aluminium Construction Subsea Motor.

SME ROV24-6, 400kW, 6-Pole, 4100/3/30-64, SS316 Construction Motor. Double Ended to have Water Pump at one end, and the Hydraulic Pump at the other end.

SME SS132-4, 5.5kW, 4 Pole, 400/3/50, SS316 Construction Subsea Motor for Thruster application (reversing Propeller mounted directly on shaft).

SME ROV10-4, 20HP, 4 Pole, 440/3/50-60, Aluminium Construction Subsea Motor to drive Hydraulic Pump.

SME ROV16-2, 400kW, 2-Pole, 3300/3/60, SS316 Construction Subsea Motor with integral Thrust Bearing and Interface to suit operation with your Water Pump (vertical operation).

SME ROV18-4, 400kw, 4 Pole, 3300/3/60, SS316 Construction Subsea Motor with integral Thrust Bearing and Interface to suit operation with Water Pump. (vertical operation).

SME ROV14-2, 375kW, 2 Pole, 3300/3/60, SS316 Construction Subsea Motor to be fitted to your Water Pump. Flange and Shaft requirements to be advised by the client.

SME ROV16-2, 400kW, 2 Pole, 3000/3/50, SS316 Construction Subsea Motor fitted to SME SS316 Construction/NAB Impeller Water Pump. Unit to be tested at rated performance in SME Test Facility.

SME ROV18-4, 400kW, 4 Pole, 3000/3/50, SS316 Construction Subsea Motor to drive close coupled Hydraulic Pump.

SME ROV10-4, 11.5kW, 4 Pole, 400/3/50, SS316 Construction Double Shafted Subsea Motor. To be a drop in replacement for the SubAtlantic Motor.

SME ROV10-4, 2.2kW, 3HP, 4-Pole, 600/3/60, Aluminium Construction Subsea Motor complete with Flange and Shaft to interface with your Gearbox. Power Cables in Oily Tube. Motor to be epoxy coated for protection.

SME ROV10-4, 15kW 20HP, 4 Pole, 415/3/50, Aluminium Construction Subsea Motor, Coupled to Rexroth A10VSO28DFR Hydraulic Pump. Subconn Connectors for Power HPBH4F, and instrumentation MCBH4MAL (Capped). Epoxy coated for protection.

SME ROV14-4, 150kW, 4 Pole, 4160/3/60, SS316 Construction Subsea Motor. Fitted to SME SS316 Construction/NAB Impeller Trenching Water Pump to produce rated Pump performance. Motor fitted with Thermex/Fluidex Heat Changer, circulation Gear Pump, and Associated Plumbing. Horizontal or Vertical Operation. Unit to be tested at rated performance in SME Test Facility.

SME ROV14-4, 150kW, 4 Pole, 4160/3/60, SS316 Construction Subsea Motor to suit operation with Water Pump developing Axial Thrust. Flange and Shaft Dimensions to suit pump of choice.

SME ROV24, 150kW 200HP, 3300/3/50. 12 Pole, 500rpm, SS316 Construction Subsea Motor to drive Dredge Pump.

SME ROV14-4, 50kW, 4 Pole, 400/3/50, SS316 Construction Oil filled Subsea Motor. Motor fitted with 3 x RTD's (1 x Redundant), 1 x Water Detector. Speed Monitoring in separate air filled chamber. Motor to be used with compensation circuit including gearbox. Motor to have shaft and flange as per customer requirements (female shaft possible). Motor suitable for vertical operation with no axial load exerted on the motor by the driven equipment.

SME ROV14-4, 100kW, 4 Pole, 400/3/50, SS316 Construction Oil filled Subsea Motor. Motor fitted with 3 x RTD's (1 x Redundant), 1 x Water Detector. Speed Monitoring in separate air filled chamber. Motor to be used with Compensation circuit including gearbox. Motor to have shaft and flange as per customer requirements (female shaft possible). Motor suitable for vertical operation with no axial load exerted on the motor by the driven equipment.

SME ROV14-4, 200kW, 4 Pole, 400/3/50, SS316 Construction Oil filled Subsea Motor. Motor fitted with 3 x RTD's (1 x Redundant), 1 Water Detector, Speed Monitoring in separate air filled chamber. Motor to be used with Compensation circuit including gearbox. Motor to have shaft and flange as per customer requirements (female shaft possible). Motor suitable for vertical operation with no axial load exerted on the motor by the driven equipment.

ROV14, 75HP / 55kW, 4 Pole, 1800rpm, 3000/3/60, Aluminium Construction Subsea Motor. Epoxy coated for protection. SS316 can also be offered.

ROV14, 100HP / 75kW, 4 Pole, 1800rpm, 3000/3/60, Aluminium Construction Subsea Motor. Epoxy coated for protection.

SME ROV14-2, 260kW, 2 Pole, 3000/3/60, Duplex St-St Construction Subsea Motor. Fitted to SME Duplex St-St Construction/NAB Impeller Trenching Water Pump, to produce Pump performance 1200m3/Hr at 6 Bar. Motor fitted with Thermex/Fluidex Heat Changer, Circulation Gear Pump and Associated Plumbing. Horizontal Operation. Unit to be tested at rated performance in SME Test Facility. Motor Oil/water filed, ambient pressure compensated. Depth rate 1500m. (2 off) Bearings PT sensors included. (2 off) Water ingress detectors included.

SME ROV22-8, 185kW, 250HP, 8 Pole, 230/3/60, SS316 Construction. Oil filled externally compensated Subsea Thruster Motor.

SME ROV14-4, 250kw /335Hp, 4-Pole, SS316 Construction, 3300/3/50 Subsea Motor. To Interface with your A4VG250 Hydraulic Pumps.

SME ROV22-4, 150kw, 4 Pole, 6000/3/50, SS316 Construction Subsea Motor to Drive Hydraulic Pumps (Model TBA)

SME ROV22-4, 300kw, 4 Pole, 6000/3/50, SS316 Construction Subsea Motor to Drive Hydraulic Pumps (Model TBA).

SME ROV14-4, 110kW 150HP, 4 Pole, 3300/3/50,60hz, Aluminium Construction Subsea Motor (epoxy coated for protection). Fitted with Rexroth A11VLO19DRS Hydraulic Pump to produce 240L/Min at 210 Bar.

SME ROV14-4, 75HP, 4 Pole, 3300 /3/60hz, Aluminium Construction Subsea Motor

SME ROV14-2, 260kW 350HP, 2 Pole, 4160/3/60, SS316 Construction Subsea Motor. Fitted to SME SS316 Construction/NAB Impeller Water Pump, to produce 500m3/hr at 16 Bar. Unit to be tested at rated performance in SME Test Facility.

SME ROV14-2, 260kW 350hp, 2 pole, 4160/3/60, SS316 Stainless Steel Construction Motor to suit operation with Water Jetting Pump. Flange and Shaft requirements to be advised.

SME ROV10-2, 18.5kW, 25HP, 2 Pole, 3000/3/50, Aluminium Construction Subsea motor to drive 6-inch Water pump. Epoxy coated for protection.

SME ROV12-4, 56kW, 75HP, 4-Pole, 3000/3/60, Aluminium Construction Subsea Motor to direct couple Hydraulic Pumps to both ends.

SME ROV10-2, 3.5kW, 2-Pole, 1000-3000V (customer to choose), 60Hz, SS316 Construction Subsea Motor. Seaconn Power Connector.

SME ROV12-4, 100HP, 3000/3/60, Aluminium Construction Subsea Motor to exactly match Curvetech Motor.

SME ROV10-2, 15kW 20HP, 2 Pole, 3000/3/60, Aluminium Construction Subsea Motor. Coupled to Rexroth A10VSO10DFR1/52R-PUC64N00 Hydraulic Pump to provide 30L/min at 210 Bar. Motor fitted with Temperature and Water Detectors, terminated in Subconn MCBH4M Connector. Power supplied through Oily Tube.

ROV Motor 200kW 335HP, 4 Pole, 1800rpm, 4160/3/60, SME ROV14, SS316 Construction Subsea Motor to drive hydraulic pump.

ROV Motor 100kW 150HP, 2 Pole, 4160/3/60, SME ROV14-2, SS316 Construction Motor to suit operation with water jetting pump. Flange and shaft requirements to be advised.

ROV Motor 150kW, 4 Pole, 1800 rpm, 4160/3/60, SME ROV14, SS316 Construction Subsea Motor to drive hydraulic pump.

SME 14 inch, 150HP, 8 Pole, 380vac/3ph/50hz, SS316 Construction. This is an Inverted Submersible Motor to drive a Propeller Pump.

SME 26 inch, 350kW, 8 Pole, Super Duplex Construction Submersible Motor to drive Turbine Pump.

SME 26 inch, 350kW, 10 Pole, Super Duplex Construction Submersible Motor to drive Turbine Pump.

SME ROV14-2,135kW, 2 Pole, 3300/3/60, SS316 Construction Subsea Motor. Driving SME SS316 Construction Subsea Pump with NAB Impeller. To operate at 5 Bar.

SME WATER JETTING PUMP for ROV TRENCHERS.

SME now offers high quality, robust and reliable, water jetting pumps complete with SME submersible motor for all subsea operations.

Ideal for ROVs, Trenchers, Dredgers and other underwater applications.

Silvercrest/SME supply our own Pump/Motor combination.

We offer a 2- pole, or 4-pole motor, coupled to our own designed pump (especially designed for trenching applications). Depth rating is 3000msw plus.

The pump and motor combination is rigorously tested in our factory to full performance before despatch.

For example:

SME ROV14-4, 185kW / 250Hp, 4 Pole, 4160/3/60, SS316 Construction Subsea Motor. Fitted to SME SS316 Construction/NAB Impeller Water Pump to produce 390m3/hr at 16 Bar.

The SME Jetting Pump can also be offered complete with a 265kW, 2- Pole, 3300V 60Hz, 3500rpm, all 316 Stainless Steel motor.

The Pump is single stage with the impeller mounted directly onto the motor shaft (So no pump bearings to wear). This Impeller is easily removed and replaced as the only wear point. This pump provides flow rates from 1000-1500m3/h.

EMAIL: Sales@SilvercrestSubmarines.com

Silvercrest / Submersible Motor Engineering.

SME is a 100% owned and operated Australian company. Where the core business is to manufacture, supply and service submersible electric motors. Thirty service orientated staff members have the ability to service and technically support all makes and models of submersible electric motors at their Perth facility. The sales department, with a total of 75 years experience in the submersible and electric motor business, are happy to assist with any enquiries on the purchase of submersible motor engineering products ranging from 3.7kw to 1500kw, in various voltages and frequencies.

In the 1200 ft workshop facility, purpose built for the manufacture and service of submersible electric motors, SME offers the following in house services:

• New Submersible Motors (6” to 20”, 5HP to 550HP, 2-pole and 4-pole).
• All Voltages and Frequencies.
• Full Machine Shop capacity.
• Voltage Testing through 10,000 volts.
• ISO9001 quality assured workshop.
• An Overhead crane (10ton swl).
• Water Pressure Test facility with full international certification.
• Full Load / Dyno testing to 250kw – with detailed test
• Balancing facility available to 250 kg.
• High POT and Surge Testing.

SME are a fully integrated manufacturing facility. In addition to a standard range of motor products we also produce the following:

• Special Motors for specialist applications.
• 4-Pole, 6-Pole and 8-Pole motors.
• All Stainless Steel or more exotic material construction.
• Special Thrust ratings.
• Special Lead manufacturing.
• NEMA and other couplings in a variety of materials.
• Replacement parts of obsolete products.

SME are also able to provide the following services:

• Trouble Shooting.
• Technical assistance during Commissioning.
• Repairs to all motor makes (oil and water filled).
• Rewinds of all voltages (200 volt to 6.6kv) with 1 Year Warranty.
• Dynamic testing.
• Non-Destructive testing.
• Welding and Machining.
• On site or Factory Based cable splicing.
• Retro fitting of Condition Monitoring Equipment.
• Modification of existing motors for upgrade to higher specifications.
• Refurbishment of ROV motors using more technically advanced materials.

Silvercrest/Submersible Motor Engineering supply 260kW and 400kW subsea motors.

Silvercrest / Submersible Motor Engineering have recently supplied six 400kw ROV 20-4 motors, 4pole/3300vac/3 phase/60hz, stainless steel

construction. Single ended for fitment with Sauer hydraulic pumps Series-90-L250. Rated for 3000m depth operations.

Also three ROV204 submersible motors (300kw/4 pole/3300vac/3 phase/60hz) with stainless steel construction, and double ended for fitment with Sauer hydraulic pumps to SMD-Hydrovision. Together with 7.5kw motors for Rov cursor application. These subsea motors being used for new trencher vehicles under construction.

In addition we have manufactured and delivered in just six weeks from order, ten 260Kw submersible motors to CTC Marine Projects based in Teeside, England. The motors will be used by CTC on their subsea plough and trenching vehicles worldwide.

The 260kW/ 3000V / 60Hz / 2 pole pump motors (designed specifically for use in the horizontal axis) were fitted with shafts at both ends, in order to mate with three tandem mounted hydraulic pumps on one end and a Hayward Tyler M6 single stage water pump-set on the opposite end. In this 260kW model, rather than using the pivot shoe arrangement, typical of vertically oriented pump-sets, heavy duty tapered roller bearings were fitted to the rotor to manage the water pump induced end-loads. Thus giving a calculated bearing life in excess of 11,000 hours, even when used in the horizontal axis. Depth rating on each motor is 10,000 meters, with oil filled compensation. Motor housings are 316 stainless steel, with Mylar coated windings (the ultimate in winding coating technology) being used in each motor at the request of CTC, giving an insulation rating of >16kV at a temperature of 140 degrees C.

Silvercrest / Submersible Motor Engineering will bespoke manufacture virtually any shape and size of submersible motor required for subsea and Rov operations.

ROV MOTORS / TRENCHING REPLACEMENT MOTORS.

We offer a standard range of direct replacement motors, designed as a direct replacement to fit into many of the more popular ROVs and trenching systems in use today (for example, the Perry, Hydrovision and Slingsby underwater systems).

For example, the picture below shows an SMD-Hydrovision 200HP ROV Curvetech motor (bottom) beside a Silvercrest/Submersible Motor Engineering motor (top). The SMD motor is somewhat larger and heavier than the equivalent motor manufactured by ourselves. Our ROV14-4 200HP motor that we presently build in various numbers for another offshore client is both smaller in size and lighter in weight.

Silvercrest can offer bespoke manufacturing of motors to meet your specific requirements.

We recently completed the design of a 290HP / 300VAC trenching motor for use in subsea trenching operations.

Also available upon request are matched High Voltage Transformer Units (HVTUs) and electronic soft starts for each standard replacement motor.

HVTUs are custom built to your specification.

Our standard ROV / Trenching Replacement Motor Range include:

• 75HP Sunn Star replacement.
• 100HP Sunn Star replacement.
• 125HP Sunn Star replacement.
• 75HP Fowler replacement.
• 100HP Fowler replacement.
• 100HP Curvetech replacement.

100HP Curvetech replacement motor.

500KW (670Hp), 1000V, SUBMERSIBLE MOTOR with HEAT EXCHANGER.

SILVERCREST / SME SUBSEA MOTORS, SUBMERSIBLE MOTORS, ROV ELECTRIC MOTORS.

Silvercrest / Submersible Motor Engineering can design and build Motor-pump sets, ROV HPU, SUBSEA, SUBMERSIBLE, ROV motors to suit any requirement due our totally flexible design capabilities: Flexible External Dimensions to suit all applications. Dimensions to allow drop in replacement for existing units. Anodised aluminium, or, 316 stainless steel. Power drive to load using an output shaft with a standard coupling, or, close coupled, etc. Single drive shaft, or, a drive shaft at both ends, (double shaft extension). SME can design and build a motor with a completely new lamination to meet special design requirements, if necessary. SME design their motors so they do not run hot. Typical motors can run on deck for at least 10 minutes on full load, with no cooling, without overheating. The motors are designed to be compact in size and suitable for heavy duty applications, like trenching. If weight is important SME can design the motor for minimum weight by utilising an aluminium construction and a hollow motor shaft, etc., while still ensuring the motor is generously rated for full load operation. If the motor is going to drive a hydraulic pump we recommend a close coupled arrangement to save the weight of the coupling and the coupling housing. SME can design and build motors for all voltages from 24 Volts to 4160 Volts with 50Hz or 60Hz frequencies, or for VVVF requirements. High Voltage motors can have random stator windings, or formed coils, depending on space and weight constraints. The winding wire for the High Voltage motors is double insulated and passes a twisted wire test at 16,000 volts and is rated up to 155 Deg.C. All windings are designed to keep 'turn to turn' voltage to a minimum. All winding materials and cables, etc. are specially selected to be suitable for use in hydraulic oil. In general the SME SUBSEA motors have low loss lamination steel (3 Watts/kg), which allows for higher flux densities, and less heat, with less material and weight. All motors are oil filled and we recommend hydraulic oils for good lubrication characteristics in preference to electrical oil which has better di-electric capabilities, but worse lubrication capabilities. If motors are going to drive a water pump SME can design the motor to take the thrust load from the pump, and keep the sea water out of the motor with a single or double mechanical seal arrangement. Thruster motors can be designed and built for voltage/speed control, which is a relatively simple speed control system, and they can also be built with a thrust bearing incorporated to take the thrust load from the impeller. To ensure the integrity of the motor housing SME does not use castings. All components are machined from solid or from extrusions. The external aluminium components are typically 6061 T6 marine grade aluminium and hard anodised to a military specification. All ball bearings are from well known brands such as SKF, FAG, or NSK. Oil seals are high temperature and typically made from Viton. Mechanical seals are typically Burgmann. All hardware used on SME SUBSEA motors is 316SS. All fixing holes are blind except the "oil in" and "oil out" fittings and the stator pack fixing bolt, if applicable. The preferred power cable entry system for SME motors is to use an "oily tube" connected to an adaptor which is part of an oil-tight rubber gland which is fixed to the stator frame. SME do not recommend bringing the power cables through the endshields of the motor because this creates additional complications when the motors are stripped down during service, because the endshields cannot be readily removed from the stator. Subsea connectors can be offered as an alternative to the Oily Tube if requested. SME strongly recommend that the motors are supplied with PT100s fitted in the windings and also in the bearings and that the internal motor temperatures are monitored and set up to alarm if the temperatures rise above the "norm". SME can also offer additional protection with a water detector, etc. The auxiliary connections for PT100s, etc. can be made through standard high pressure, water tight, plug and sockets as supplied by "Subconn", "Impulse", and "Burton". These are also fitted to a connection block on the stator, not on the endshield. All finished motors are pressure tested to ensure they are "oil tight" and suitable for compensated operation down to 4000 metres. All motors are rated for continuous operation and all prototype motors are full load performance tested at rated voltage and rated frequency to confirm their performance characteristics. All motors can be issued with a "Type Test Certificate" or even full load tested at additional cost, if required. SME can also offer to arrange for hydraulic pumps to be set up and tested on the motors at rated voltage and frequency. SME can offer to supply Hydraulic Power Units, ROV HPU, complete with the addition of a customer specified Hydraulic Pump. SME also offer motor-pump sets for both hydraulic and water jetting applications. SME is a fully quality assured company to ISO 9001.2000 for "Design, development, manufacture, and testing of submersible electric motors and electric motors for remotely operated vehicles". SME Subsea motors can be designed and built for all subsea applications, such as ROVs, Trenchers, Ploughs, Submarines, Dredges, etc. All makes of subsea motor can be serviced, repaired and tested by SME. In some cases the original motors can be significantly upgraded. If you are having problems with your existing subsea motors please contact SME - we are keen to help and we are very price competitive. At SME we are continually working on improving the performance of our products and for this reason we reserve the right to make changes without notice to any of the data in this brochure. SUBSEA and ROV MOTORS: Silvercrest / Submersible Motor Engineering build and repair ROV submersible motors for all subsea applications. We design, manufacture, and supply, submersible electric motors for all SUBSEA and ROV, SUBSEA equipment, also for any special purpose submersible electric motor requirements. Silvercrest / Submersible Motor Engineering offer SUBSEA electric generators for Tidal Power Generation. We repair and rewind large high voltage (500kW, 6600V) submersible electric motors. High Temperature Submersibles in 6-inch to 20inch frames suitable for operation in ambient temperatures of 75 Deg. C. Supply High Voltage water filled submersible motors (3300V, 4160V and 6600V) Supply Upgraded Temperature Monitoring units, with new improved user-friendly parameter settings. Manufacture Subsea and ROV motors suitable for depths of 4000m. Manufacture Subsea Electric Generators for Tidal Generation. Induction Generators or slow speed Permanent Magnet Synchronous Generators unto 500kW. SUBMERSIBLE MOTORS and PUMPS. We offer a wide range of electric submersible motors with matched hydraulic and water pumps. We have our own submersible motors that are drop-in replacements for most of the popular models in use today. We can supply ROV HPU submersible motors from 30kW to 250kW, trenching HPU submersible motors from 100kW to 500kW. Trenching jetting pumps, plough HPU submersible motors, plough jetting pump sets, turbine and centrifugal water pumps, and hydraulic pumps (Rexroth A7 and A10 series, Sauer 90 series and Kawasaki KV3 series). We offer AC thrusters as direct replacements to existing DC thrusters from 1kW to 50kW in size. Silvercrest/Submersible Motor Engineering design and build specialized Submersible ROV motors for use SUBSEA in the offshore industry. These motors are usually made to order and vary from 1kW to 600kW, from 400 to 6600 Volts, 50 or 60 Hz, 2 Pole, 4 Pole, 6 Pole and 8 Pole. We can repair, rewind, rebuild, and redesign any ROV submersible electric motor. Silvercrest / Submersible Motor Engineering design and manufacture specialized motors for use on SUBSEA equipment used in the offshore industry. There are two common methods of construction. Stainless steel construction or Marine Grade aluminium that is Black anodized to resist corrosion. We can also offer motors manufactured from Duplex and Super Duplex stainless steel. Our subsea motors are usually oil filled and pressure compensated. The common operating voltages are 400 volts, 3300 volts, 4160 volts and 6600 volts (even for small 5kW motors). Our motors operate at depths down to 4000 metres, or deeper by special request. Silvercrest / Submersible Motor Engineering manufacture complete submersible electric motors, motor-pump sets, and ROV HPU. We offer submersible motor rewinding / rebuilding /electrical conversion / and original construction modification. SME can repair and completely rebuild most submersible electric motors (for example: Alstra, Aturia, Bamsa, B. J., Elmaksan, Exodyne/EEMI, G.E., Hayward Tyler, Hitachi, Mercury, Oddesse, Pleuger, Saer, S.M.E., Subteck, Sumo, Sun Star, U.S.). Company Profile. Silvercrest / Submersible Motor Engineering manufactures new Submersible and ROV Motors. SME also services and repairs all brands of Submersible and ROV Motors. Including Hitachi, Pleuger, Grundfos, Mercury, Byron Jackson, Haywood Tyler, and Franklin. Our business is to manufacture, supply and service Submersible Electric Motors, Subsea and ROV motors. With a compliment of 30 service orientated staff members, we have the ability to service and technically support all makes and models of Submersible Electric Motors at our Maddington, Perth facility. Our sales department, with a total of 75 years experience in the Submersible and Electric motor business, are happy to assist with any enquiries on the purchase of Submersible Motors, HPU, and motor-pump sets, ranging from 3.7kw to 1500kw, in various voltages and frequencies. In our 1200 ft facility, purpose built for manufacture and service of Submersible Electric Motors we offer the following in-house services: Full Machine Shop capacity. Voltage Testing through 10,000 volts. ISO9001 quality assured workshop. An Overhead crane through 10 ton capacity. A state of the art Water Pressure Test facility with full international certification. High POT and Surge Testing. Full Load / Dyno testing to 250kw of all types of Electric Motors with detailed test reports. Balancing Facility available, to 250 kg. SME are a fully integrated manufacturing facility and in addition to our Standard range of submersible motors we also offer the following: Special Motors for specialist applications. 4 Pole, 6 Pole and 8 Pole motors. All Stainless Steel or more exotic material construction. Special Thrust ratings. Special Lead manufacturing. NEMA and other couplings in a variety of materials. Replacement parts of obsolete products. Technical assistance during Commissioning. Trouble Shooting. Repairs to all makes (Oil and Water filled). Rewinds of all Voltages (200 volt to 6.6kv) with 1 Year Warranty on all rewinds. Dynamic testing. Non-Destructive testing. Welding and Machining. On site or Factory Based Cable Splicing. Retro Fitting of Condition Monitoring Equipment. Modification of existing motors to upgrade them higher specifications. Refurbishment of ROV motors using more technically advanced materials. Please contact us direct for confirmation of any drawing dimensions or performance data. Email: sales@SilvercrestSubmarines.com

Other SME SubSea Motors and Motor-Pump sets.

ROV Motor ROV12, 65HP, 3000v + Rexroth pump.

SME ROV12-2 48kW 65HP 2-pole 3000/3/50 Aluminium Construction ROV Motor fitted with Rexroth A10VO28DFR1/31R-PSC62N00 Hydraulic Pump. Motor with Oily Tube connection for Power Leads. Fitted with Temperature Sensing and Water Detectors terminated on Subconn or similar connector. Power Conductor and Sensor Connector Blocks to be in the same position on the motor at opposite ends.

Submersible Motors for Water-Jetting Pumps.

SME ROV14-2, 200HP, 150kW, 2- pole, 3000/3/60 motor. Anodised Aluminium Construction. To suit operation with Water Jetting Pump. Fitted with Subconn connector Type MCBH4M. Flange and Shaft requirements to be advised by customer.

Submersible Motor ROV14, 200KW, 4-poles, 3000v motor + Rexroth pump.

SME ROV14, 200kW, 268HP, 4 Pole, 3000/3/50, 1490rpm Stainless Steel Construction Subsea Motor designed to close couple to Rexroth A11VLO190DRS-11-LN-12N00 Hydraulic Pump. The motor will cool itself in the ambient seawater. Sensors and electrical connector included in the motor price. Rexroth pump A11VLO190DRS-11-LN-12N00. Hydraulic Pump with Horsepower Limiting Controller .

Subsea Motor. SME ROV14-4, 125HP, with Vickers Hydraulic Pump.

SME ROV14-4, 93kW 125HP, 4-Pole, 3000/3/50, Anodized Aluminium Construction with Vickers PVH141-Q1C Hydraulic Pump.

Silvercrest / Submersible Motor Engineering have supplied six 400kw ROV20-4 motors, 4pole/3300vac/3 phase/60hz, stainless steel construction. Single ended for fitment with Sauer hydraulic pumps Series-90-L250. Rated for 3000m depth operations.

Also three ROV204 submersible motors (300kw/4 pole/3300vac/3 phase/60hz) with stainless steel construction, and double ended for fitment with Sauer hydraulic pumps to SMD-Hydrovision. Together with 7.5kw motors for Rov cursor application.

In addition we recently manufactured and delivered in just six weeks from order, ten 260Kw submersible motors to CTC Marine Projects based in Teeside, England. The motors will be used by CTC on their subsea plough and trenching vehicles worldwide.

The 260kW/ 3000V / 60Hz / 2 pole pump motors (designed specifically for use in the horizontal axis) were fitted with shafts at both ends, in order to mate with three tandem mounted hydraulic pumps on one end and a Hayward Tyler M6 single stage water pump-set on the opposite end. In this 260kW model, rather than using the pivot shoe arrangement, typical of vertically oriented pump-sets, heavy duty tapered roller bearings were fitted to the rotor to manage the water pump induced end-loads. Thus giving a calculated bearing life in excess of 11,000 hours, even when used in the horizontal axis. Depth rating on each motor is 10,000 meters, with oil filled compensation. Motor housings are 316 stainless steel, with Mylar coated windings (the ultimate in winding coating technology) being used in each motor at the request of CTC, giving an insulation rating of >16kV at a temperature of 140 degrees C.

Silvercrest / Submersible Motor Engineering will bespoke manufacture virtually any shape and size of submersible motor required for subsea operations.

500KW MOTOR with HEAT EXCHANGER.

SUBMERSIBLE and SUBSEA MOTOR DRAWINGS.

Please contact us regarding your submersible motor requirements, and we will be very pleased to quickly produce a motor drawing for your approval.

To Discuss Your Motor Requirements and For More Information. Please contact us:

SILVERCREST / SME.

Tel: (+44) 1285 760620

Email: sales@SilvercrestSubmarines.com

IN SUMMARY:

SPECIFICATIONS FOR SME SUBSEA ELECTRIC MOTORS.

SME can design and build SUBSEA motors to suit most requirements.

Flexible External Dimensions to suit all applications.

Dimensions to allow drop in replacement for existing units.

Anodised aluminium, or 316 stainless steel construction.

Power drive to load using an output shaft with a standard coupling, or close coupled.

Single drive shaft, or a drive shaft at both ends, (double shaft extension).

SME can design and build a motor with a completely new lamination to meet special design requirements, if necessary.

SME design their motors so they do not run hot. Typical motors can run on deck for at least 10 minutes on full load, with no cooling, without overheating. The motors are designed to be compact in size and suitable for heavy-duty applications, such as subsea trenching.

If weight is important, SME can design the motor for minimum weight by utilising an aluminium construction and a hollow motor shaft, etc., while still ensuring the motor is generously rated for full load operation. If the motor is going to drive a hydraulic pump we recommend a close-coupled arrangement to save the weight of the coupling and the coupling housing.

SME can design and build motors for all voltages from 24 Volts to 4160 Volts with 50Hz or 60Hz frequencies, or for VVVF requirements. High Voltage motors can have random stator windings, or formed coils, depending on space and weight constraints. The winding wire for the High Voltage motors is double insulated and passes a twisted wire test at 16,000 volts and is rated up to 155 Deg.C. All windings are designed to keep 'turn to turn' voltage to a minimum. All winding materials and cables, etc. are specially selected to be suitable for use in hydraulic oil.

In general the SME subsea submersible motors have low loss lamination steel (3 Watts/kg), which allows for higher flux densities, and less heat, with less material and weight.

All motors are oil filled and we recommend hydraulic oils for good lubrication characteristics, in preference to electrical oil that has better di-electric capabilities, but worse lubrication capabilities.

If motors are going to drive a water pump SME can design the motor to take the thrust load from the pump, and keep the sea water out of the motor with a single or double mechanical seal arrangement.

Thruster motors can be designed and built for voltage/speed control, which is a relatively simple speed control system, and they can also be built with a thrust bearing incorporated to take the thrust load from the impeller.

To ensure the integrity of the motor housing SME does not use castings. All components are machined from solid or from extrusions. The external aluminium components are typically 6061 T6 marine grade aluminium and hard anodised to a military specification.

All ball bearings are from well-known brands such as SKF, FAG, or NSK. Oil seals are high temperature and typically made from Viton. Mechanical seals are typically Burgmann.

All hardware used on SME SUBSEA motors is 316SS.

All fixing holes are blind except the "oil in" and "oil out" fittings and the stator pack fixing bolt, if applicable.

The preferred power cable entry system for SME motors is to use an "oily tube" connected to an adaptor that is part of an oil tight rubber gland that is fixed to the stator frame.

SME do not recommend bringing the power cables through the end shields of the motor because this creates additional complications when the motors are stripped down during service, because the end shields cannot be readily removed from the stator.

Subsea connectors can be offered as an alternative to the Oily Tube if requested.

SME strongly recommend that the motors are supplied with PT100s fitted in the windings and also in the bearings and that the internal motor temperatures are monitored and set up to alarm if the temperatures rise above the "norm".

SME can also offer additional protection with a water detector, etc. The auxiliary connections for PT100s, etc. can be made through standard high pressure, water tight, plug and sockets as supplied by "Subconn", "Impulse", and "Burton". These are also fitted to a connection block on the stator, not on the end shield.

All finished motors are pressure tested to ensure they are "oil tight" and suitable for compensated operation down to 4000 metres.

All motors are rated for continuous operation and all prototype motors are full load performance tested at rated voltage and rated frequency to confirm their performance characteristics.

All motors can be issued with a "Type Test Certificate" or even full load tested at additional cost, if required.

SME can also offer to arrange for hydraulic pumps to be set up and tested on the motors at rated voltage and frequency.

SME can offer to supply Hydraulic Power Units complete with the addition of a customer specified Hydraulic Pump.

SME is a fully quality assured company to ISO 9001.2000 for "Design, development, manufacture, and testing of submersible electric motors and electric motors for remotely operated vehicles".

SME Subsea motors can be designed and built for all subsea applications, such as ROVs, Trenchers, Ploughs, Submarines, Dredges, etc.

All makes of subsea motor can be serviced, repaired and tested by SME.

In some cases the original motors can be significantly upgraded.

If you are having problems with your existing subsea motors please contact SME - we are keen to help and we are very price competitive.

At SME we are continually working on improving the performance of our products and for this reason we reserve the right to make changes without notice to any of the data in this brochure.

Please contact us direct for confirmation of any drawing dimensions or performance data.

SILVERCREST / SME.

Tel: (+44) 1285 760620

Email: sales@SilvercrestSubmarines.com

SME design, manufacture, and supply, submersible electric motors for bore holes, SUBSEA vehicles, and ROV electric motors for SUBSEA equipment, submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements.

SME also offer:

SUBSEA electric generators for Tidal Power Generation.

High temperature motors for 55 deg. C. water ambient

High efficiency water filled motors

All stainless steel construction

Specialists in rewinding & repairing submersible motors

Full performance testing of submersible motors

1000V and other special voltages - NO PROBLEM

Super Duplex motors

Repair and rewind of large high voltage (500kW 6600V) submersible electric motors.

SME High Temperature Submersibles in 6"to 20" frames suitable for operation in ambients of 75 Deg.C

High Voltage water filled submersible motors-3300V, 4160V and 6600V.

Upgraded Temperature Monitoring unit available with new improved user-friendly parameter setting.

SME ROV motors suitable for depths of 4000M.

WD Series sump pump motors.

Subsea Electric Generators for Tidal Generation.

Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500kW.

SUBSEA and ROV Motors.

Silvercrest / Submersible Motor Engineering Repair and rewind your large, high voltage (500kW 6600V), submersible electric motors.

SME High Temperature Submersibles in 6-inch to 20-inch frames suitable for operation in ambients of 75 Deg.C

Silvercrest / Submersible Motor Engineering High Voltage water filled submersible motors-3300V, 4160V and 6600V.

Upgraded Temperature Monitoring unit available with new improved user-friendly parameter setting.

Silovercrest/SME ROV motors suitable for depths of 4000M.

WD Series sump pump motors.

Subsea Electric Generators for Tidal Generation. Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500kW.

SME design and build specialized motors for use SUBSEA, for the offshore oil and gas industry, and ROV companies.

Our motors are usually made to order and vary from 1kW to 600kW, from 400 to 4160vac, 50 or 60 Hz, 2-Pole or 4-Pole. Eight pole also available on request.

There are two common methods of construction. Stainless steel construction, Duplex, Super Duplex, or Marine Grade aluminium that is Black anodized to resist corrosion.

Our motors are usually oil filled and pressure compensated. Common operating voltages are between 2300 volts and 3300 volts - even for small 5kW motors.

Subsea and ROV motors can operate at depths down to 4000 metres.

Super Duplex motors available on request.

1000v motors and other voltages are available on request.

SME design, manufacture, and supply, submersible electric motors for deep well submersible pumps, SUBSEA and ROV electric motors for SUBSEA equipment, submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements. SME also offer complete motor repair and rewind of all name brands of submersible motors, both water and oil filled.

Repair and rewind of large high voltage (500kW 6600V) submersible electric motors.

SME High Temperature Submersibles in 6"to 20" frames suitable for operation in ambient of 75 Deg.C

High Voltage water filled submersible motors-3300V, 4160V and 6600V.

Upgraded Temperature Monitoring unit available with new improved user-friendly parameter setting.

SME ROV motors suitable for depths of 4000M.

WD Series sump pump motors.

Subsea Electric Generators for Tidal Generation. Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500k

SME Heat Exchanger Motors.

SME now offer a complete range of water filled, watertight, submersible motors with integral heat exchangers in the 10", 12", 14" and 16" for 2- pole and 4- pole speeds.

These motors offer a significantly lower temperature rise when compared with standard submersible motors. This is an advantage that can be utilized when customers want to operate in water with a high ambient temperature or when there will be minimal cooling water flow.

Even with the standard applications the lower temperature rise will extend the life of the motor significantly. There is an accepted rule of thumb for electrical insulation that its life is shortened by one half for every 10°C increase in operating temperature. The winding operating temperature for a normal water filled submersible motor is about 70 Deg. C in 25 Deg. C. water, while an SME Heat Exchanger Motor will be running at about 45 Deg. C. - this is 25 Dec. C. cooler. This magnitude of difference in temperature rise will have a significant positive impact on motor life.

The basic design principle for these motors is to circulate the internal water in the motor to remove the heat from the "active" parts of the motor and then pass it through a heat exchanger which brings the internal water back to somewhere close to the external ambient water temperature - before feeding it back through the "active" parts again to remove more heat. The heat exchanger increases the external surface area of the motor by 50% and the water circulation allows the heat to dissipate more evenly and quickly out of the motor and into the external water. The small impeller inside the motor that circulates the water has an insignificant impact on the motor efficiency in terms of additional load, while the motor has an improved efficiency because the stator and rotor copper losses are reduced due to the lower operating temperature.

Motor Thermal Protection Unit

All SME Heat Exchanger Motors come with four (4) PT100 temperature sensors installed in the motor.

One PT100 is attached to the thrust bearing assembly that will detect excessive thrust loads and overheating in the thrust bearing.

One PT100 is installed in the end winding on the non-drive end of the motor.

One is installed half way down the slot in the winding in the middle of the motor.

One is installed in the end winding on the drive end of the motor.

SME can offer one temperature protection unit (SME4TM) to monitor all 4 PT100'S installed in the SME Heat Exchanger Motor.

Services available from Silvercrest / Submersible Motor Engineering.

Submersible Motor Engineering Offer:

New submersible motor sales 1.0 Hp to 1000 Hp 4"-6"-8"-10" 12" 14" 16" & 20" standard & 316ss construction 2P & 4P speed. All voltages (motors wound to spec).

Complete submersible electric motor Rewind / rebuilding electrical conversion construction modification.

Hire / leasing Pump - motor - control box (soft start - D.O.L ect).

Service exchange Full range of rebuilt submersible electrical motors (12 month warranty).

Contract supply Motors held stock in Perth, for prompt delivery to site.

Product training seminars Pump/motor installation - cable splicing etc.

Subsea Motors.

Submersible Motor Engineering / Silvercrest can supply HV HP motors up to 5,500kW, engineered to meet all your subsea operating conditions. A key design feature is the High Pressure capability, allowing our motors to operate effectively at water depths of 4000m. Our design ensures a 'uniform electric field' that minimises electrical stresses, to maximise the winding cable life. Our engineers also ensure the optimum temperature within the motor by careful selection of the internal flow pattern and external heat exchanger. All our Subsea motors have a variable speed capability. The materials of motor construction are typically 316 stainless steel, duplex, or super duplex stainless steel.

The Submersible Motor Engineering / Silvercrest motor design allows for a long trouble free operational life. Our subsea, ROV and submersible motors are available in water-filled and oil-filled construction. Extreme subsea conditions demand reliable, high quality, solutions that will not fail. We are experts in such technology and will engineer solutions for your subsea applications. We can also design and manufacture special application submersible motors for specific requirements.

Submersible Motor Engineering / Silvercrest is the world leader in submersible motor technology, enabling our customers to explore deeper underwater than ever before. High power, high voltage and high-pressure specifications are common place for many of our clients. Our submersible subsea and ROV motors are the best on the market today, offering a comprehensive choice of materials and design to underwater and ROV operators.

Submersible Motor Engineering / Silvercrest specializes in all aspects of submersible electric motor operation, performance, and design. Due to industry demand for readily available quality parts, we also rewind, repair, redesign, and machine major components of other manufacturer's motors that require repair and re-manufacture.

Testing. All our motors, motor-pump sets and HPUs are fully run-in at full load prior to shipment. A test certificate is supplied with each unit, stating all the recorded outputs (such as power input and output, temperature, pressure, flow, etc).

ROV Deep Ocean Motors.

Submersible Motor Engineering / Silvercrest has manufactured hundreds of ROV Motors for new and existing subsea vehicles, and other deep ocean applications. Submersible Motor Engineering/Silvercrest is a leading manufacturer of motors, motor-pump sets, and HPUs, for the power, and oil and gas industries.

Submersible Motor Engineering / Silvercrest offer a comprehensive range of Fluid Filled Electric Motors and Motor-Pump sets that are designed to meet the most demanding applications and environments for the energy market. Exceptional build quality is what makes our motors the first choice for many operators today. Our attention to detail and precision engineering is demonstrated at hundreds of locations worldwide.

Submersible Motor Engineering / Silvercrest motors are manufactured in Perth (WA) and supplied worldwide, providing superb performance and reliability.

Submersible Motor Engineering / Silvercrest supply motors for ROVs, Offshore Oil and Gas Installations, Offshore Platforms, Semi-submersibles, Subsea Processing operations and advanced deepwater motor technology. Our motors are designed by subsea experts, and built by some of the world’s most skilled engineers. Our client list includes some of the biggest names in the ROV, subsea, and oil and gas industry. Our subsea motors are High Power, High Voltage, High Pressure, and Fluid Filled for all deepwater applications. To meet the demands of complex subsea operating conditions, we manufacture HV HP motors up to 5,500kw (or higher). Our motor design enables the motors to operate at depths of 4000m. These parameters accommodate most subsea projects. However other motor designs and subsea solutions are available on request.

Extensive research and development experience of custom builds and project led engineering, makes Silvercrest/Submersible Motor Engineering your ideal subsea partner.

SUBMERSIBLE MOTORS and PUMPS.

We offer a wide range of electric submersible motors and matched hydraulic pumps, and water pumps. We can offer Silvercrest/Submersible Motor Engineering motors that are drop in replacements for most of the popular ROV motors in use today. We can supply ROV HPU submersible motors from 30kW to 150kW, trenching HPU submersible motors from 100kW to 400kW, trenching jetting pumps, plough HPU submersible motors, plough jetting pump sets, turbine and centrifugal water pumps, and hydraulic pumps (Rexroth A7 and A10 series, Sauer 90 series and Kawasaki KV3 series). Silvercrest/Submersible Motor Engineering also offer an extensive range of ROV components for ROVs, trenchers and ploughs. We can offer AC thrusters as direct replacements to existing DC thrusters from 1kW to 50kW in size.

Special AC Submersible Subsea Motors, Motor-Pump sets, and HPUs (Your Questions answered).

Q: Can Silvercrest / Submersible Motor Engineering supply replacements for military specification motors, and for the offshore oil and gas industry?

A: Yes. We have wide experience of providing this service on a world-wide basis.

Q: Can Silvercrest / Submersible Motor Engineering repair and refurbish AC motors originally made by other manufacturers?

A: In general, yes, and we have undertaken this work over many years.

Q: Do you offer customised subsea and ROV motors?

A: Yes, all of our motors, motor-pump sets, and HPUs are custom built. There is an almost unlimited range of custom options, including speed, voltage, frequency, size, power, special shafts, flanges, wiring, connectors and accessories. We will be pleased to quote for your specific requirement.

Q: Do you offer special project submersible AC motors?

A: Yes, we can supply special AC motors for submersible operations, e.g., oil platforms, deep wells, sewage and dredging applications. Our designs include surface cooled and forced cooled models, which cover all combinations of continuous and intermittent duty and wet or dry running at maximum power levels. Please contact us regarding your requirements.

Q: What are your lead times?

A: The nature of these submersible motors, motor-pump sets and HPUs is such that we only manufacture to order. The lead times are generally in the order of weeks, including approval of engineering drawings, precision machining, assembly times, and comprehensive in-house testing.

SUBSEA/ROV MOTORS.

Silvercrest / Submersible Motor Engineering build and repair ROV submersible motors for all subsea applications. We design, manufacture, and supply, submersible electric motors for all SUBSEA and ROV, SUBSEA equipment, also for any special purpose submersible electric motor requirements.

Silvercrest / Submersible Motor Engineering offer SUBSEA electric generators for Tidal Power Generation.

We repair and rewind large high voltage (500kW, 6600V) submersible electric motors.

High Temperature Submersibles in 6-inch to 20inch frames suitable for operation in ambient temperatures of 75 Deg. C.

Supply High Voltage water filled submersible motors (3300V, 4160V and 6600V)

Supply Upgraded Temperature Monitoring units, with new improved user-friendly parameter settings.

Manufacture Subsea and ROV motors suitable for depths of 4000M.

Manufacture Subsea Electric Generators for Tidal Generation.

Induction Generators or slow speed Permanent Magnet Synchronous Generators unto 500kW.

SUBMERSIBLE MOTORS and PUMPS.

We offer a wide range of electric submersible motors with matched hydraulic and water pumps.

We have our own submersible motors that are drop-in replacements for most of the popular models in use today.

We can supply ROV HPU submersible motors from 30kW to 250kW, trenching HPU submersible motors from 100kW to 500kW, trenching jetting pumps, plough HPU submersible motors, plough jetting pump sets, turbine and centrifugal water pumps, and hydraulic pumps (Rexroth A7 and A10 series, Sauer 90 series and Kawasaki KV3 series).

We offer AC thrusters as direct replacements to existing DC thrusters from 1kW to 50kW in size.

Silvercrest/Submersible Motor Engineering design and build specialized Submersible ROV motors for use SUBSEA in the offshore industry. These motors are usually made to order and vary from 1kW to 600kW, from 400 to 6600 Volts, 50 or 60 Hz, 2 Pole, 4 Pole, 6 Pole and 8 Pole.

We can repair, rewind, rebuild, and redesign any ROV submersible electric motor.

Silvercrest/Submersible Motor Engineering design and manufacture specialized motors for use on SUBSEA equipment used in the offshore industry.

There are two common methods of construction - stainless steel construction or Marine Grade aluminium that is Black anodized to resist corrosion. We can also offer motors manufactured from Duplex and Super Duplex stainless steel.

Our subsea motors are usually oil filled and pressure compensated. The common operating voltages are 400 volts, 3300 volts, 4160 volts and 6600 volts (even for small 5kW motors). Our motors operate at depths down to 4000 metres, or deeper by special request.

Silvercrest/Submersible Motor Engineering manufacture complete submersible electric motors, motor-pump sets, and ROV HPU.

We offer submersible motor rewinding / rebuilding /electrical conversion / and original construction modification.

SME can repair and completely rebuild most submersible electric motors (for example: Alstra, Aturia, Bamsa, B. J., Elmaksan, Exodyne/EEMI, G.E., Hayward Tyler, Hitachi, Mercury, Oddesse, Pleuger, Saer, S.M.E., Subteck, Sumo, Sun Star, U.S.).

motors using more technically advanced materials.

CONTACT US TODAY TO DISCUSS YOUR SUBSEA MOTOR REQUIREMENTS.

Email: sales@SilvercrestSubmarines.com

SME design, manufacture, and supply, submersible electric motors for bore-holes. SUBSEA and ROV electric motors for SUBSEA equipment. Submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements. SME also offer SUBSEA electric generators for Tidal Power Generation.

Repair and rewind of large high voltage (500kW, 6600V) submersible electric motors.

SME High Temperature Submersibles in 6 inch to 20 inch frames suitable for operation in ambients of 75 Deg.C.
High Voltage water filled submersible motors (3300V, 4160V and 6600V).

Upgraded Temperature Monitoring units available with new improved user friendly parameter setting.

ROV motors suitable for depths of 4000M.

WD Series sump pump motors.

Subsea Electric Generators for Tidal Generation. Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500kW.

SUBMERSIBLE MOTORS.

SME has many years of experience with the design and manufacture of submersible motors, used in the offshore and dredging industries. This experience has resulted in SME being the company of choice as a manufacturer and supplier for many of the major offshore subsea companies

SME submersible motors are specially designed to suit customer requirements. With special attention being paid to the motor design. Resulting in SME manufacturing rugged motors with low maintenance requirements, a very high reliability, and a long service lifetime. Low speed designs are available up to 1.0 MW leaving out the need for a gearbox.

SME submersible motors have a generous overload margin with solid lamination, windings and rotor design. The SME submersible motor can be oil filled. Hence no re-greasing of the bearings is required. The oil filling also prevents condensation of water inside the motor. Cooling of the motor can be either by natural cooling or forced cooling by the surrounding seawater.

The following instrumentation is available:

Stator temperature measurement, Bearing temperature measurement

Oil temperature measurement

Pressure difference transmitter Seawater / Oil

Water leakage detection in auxiliary connection boxes

Factory load test

Horizontal or vertical mounting of the motor.

SME offer a Repair and Re-conditioning service for your used submersible electric motors. In addition to the manufacture of new submersible motors, we also carry out maintenance, repair and re-conditioning of submersible motors of our own design and third party motors. After Sales Support . Maintenance, repair and overhaul of large electrical motors of any make and type.

Winding and Electrical Test Procedures for Submersible Motor Engineering:

Minimum Test Requirements for New or Rewound Stators prior to Assembly are as follows:

1000 Volts to 3300 Volts - Wet Wound Motors.

Whole stator is submerged in water and pressurized to 30 psi for 30 minutes and then Hi Pot tested at Rated Voltage x 2 + 1600 Volts for 1 minute.

380 Volts to 1000 Volts.

Whole stator is submerged in water and pressurized to 30 psi for 30 minutes and then Hi Pot tested at Rated Voltage x 2 + 1600 Volts for 1 minute.

Minimum Test Requirements for Stators during Assembly are as follows:

1000 Volts to 3300 Volts.

1. Insulation Resistance Test - Megger Test - 5000 Volts DC for 1 minute.

2. Dielectric Absorption Test - Megger Test - 1000 Volts DC for 10 minutes.

3. Hi Pot Test - Rated Voltage x 2 + 1600 Volts for 1 minute for new or rewound stators. Rated voltage x 2 for 1 minute for reconditioned stators.

4. Surge Test at 2000 Volts DC.

380 Volts to 1000 Volts.

1. Insulation Resistance Test - Megger Test - 1000 Volts DC for 1 minute.

2. Dielectric Absorption Test - Megger Test - 1000 Volts DC for 10 minutes.

3. Hi Pot Test - Rated Voltage x 2 + 1600 Volts for 1 minute for new or rewound stators. Rated voltage x 2 for 1 minute for reconditioned stators.

4. Surge Test at 500 Volts DC.

Tests are to be performed in the sequence specified.

The Engineering Department is to be consulted immediately if any Stators fail a test.

If the polarization Index is less than 2, consult the Engineering Department.

Pass/Fail criteria are based on IEC standards, IEEE Standards, and the Baker Surge Test Manual.

Test motor with a full set of BJM tests and record the results.

No Load Running.

Run Motor on No Load - preferably in the Vertical position.
Adjust voltage and frequency to match Nameplate voltage and frequency.
Record: Voltage on all 3 phases, amps on all 3 phases, RPM, Vibration Levels at DE and NDE in both planes, time motor takes to stop after power off. Compare results with standard figures and other similar motors. Advise Engineering Department immediately if there is a discrepancy.

Effect and Results of Water in Leads.
Water in Leads	Fault in 1 lead	Fault in 2 leads	Fault in 3 leads
Winding Currents (Most motors are internally connected in Delta).	Unbalanced currents. High Insulation Resistance to Earth 1 to 2 x FLC, Light Load on motor 2 to 3 x FLC, stalled motor 4 to 6 x FLC.	Unbalanced currents. High Insulation Resistance to Earth 1 to 2 x FLC, Light Load on motor 2 to 3 x FLC, stalled motor 4 to 6 x FLC.	Unbalanced currents. High Insulation Resistance to Earth 1 to 2 x FLC, Light Load on motor 2 to 3 x FLC, stalled motor - probably no current in motor winding.
Current in Dry leads	1 to 6 x FLC	1 to 6 x FLC	N/A
Current in Wet leads	Current flow to Earth = 20 x FLC	Current flow to Earth = 20 x FLC	Current flow to Earth = 20 x FLC
Failure	Burnt out Winding. Overheated Motor lead.	Burnt out Winding.Overheated Motor lead.	Burnt out Winding.Overheated Motor lead.
Recommended Protection	Fast Acting Earth Leakage Relay.Fast Acting Overload Relay or Circuit Breaker.	Fast Acting Earth Leakage Relay.Fast Acting Overload Relay or Circuit Breaker.	Fast Acting Earth Leakage Relay. Fast Acting Overload Relay or Circuit Breaker.
On a correct installation the motor frame is earthed. Water is a good conductor of electricity. As soon as a circuit is established between the water in the bore and the power supply cables, current will flow through this fault causing unbalanced currents in excess of normal Full Load Current (FLC). If the motor is not disconnected from the supply immediately catastrophic damage will be caused to the windings due to overheating because of high currents. The magnitude of the current flows will depend on the level of insulation to earth. Sometimes these faults are not solid connections to the water or to earth, i.e. there is still a high insulation level to earth, which restricts the current flow to earth. In this case the Earth leakage and/or overload protection may not trip immediately and the motor windings still overheat due to the unbalanced currents.
Evidence of Water in the leads.
When the motor leads or drop cables are cut, water drains out when the leads are held up in the air and the recently cut end is left hanging down. Stator winding are overheated usually causing multiple earth faults in the windings.

Submersible Motor Engineering motors have been extensively tested and used with modern GTO and IGBT VVVF Drives, however, care must be taken to ensure reliable and satisfactory operation. Please pay attention to the following guidelines.

	Accurate and Calibrated Quick Trip overloads must be installed and set to trip if the current in any phase exceeds the full load current.
	The motor should not be operated continuously at less than 70% of Synchronous Speed - 3000 x .7 = 2100 RPM for a 50 Hz 2 pole motor, or 1500 x .7 = 1050 RPM for a 50Hz 4 pole motor.
	Maximum Speed is the nameplate synchronous speed ¨C 3000 RPM for a 50 Hz 2 Pole motor and 1500 RPM for 50 Hz 4 Pole Motor.
	Maximum Run Up time must not exceed 4 seconds.
	Maximum Run Down time to Power Off shall not exceed 4 seconds.
	Cooling water flow past the motor must exceed 15 cm/sec or 0.5 feet/sec at all times and under all operating condition except during Start Up, however, water flow should not exceed 300 cm/sec or 10 feet/sec as this can also create an overheating condition.
	The VVVF Drive must be set up to supply a constant linear Volts to Hertz ratio, i.e. at 25 Hz the Voltage should be 207 Volts for a 415 V 50 Hz motor.
	The output of the VVVF Drive should be filtered to reduce harmonics. The output power should be balanced, free of High Voltage Transients, and harmonics, and within the rated voltage and frequency of the motor.

Operation at reduced speed can cause overheating. Operation with a long Run Up time can cause problems in the Down Thrust bearing, due to insufficient lubrication between the Pivot Shoes and the Carbon Thrust Bearing Disc. Other operating requirements still apply as specified in Submersible Motor Engineering Installation and Maintenance Procedures.

Overheating in Submersible Motors

The most common cause of failure in a Submersible Electric Motor is Overheating, as this causes the insulation materials in the motor to deteriorate until failure occurs. Sometimes the overheating can introduce other problems in the motor, before it fails, which accelerates the process.

The most common causes of overheating are as follows:

Overloading.

High ambient water temperature.

Low flow rate of external cooling water.

Very high flow rate of external cooling water.

Low Supply Voltage.

High Supply Voltage.

Incorrect Installation Procedures.

Voltage and Current Unbalance.

Voltage surges and Spikes.

Single Phasing.

Phases Reversed.

Build up of organic or mineral material on the outside of the motor.

Rapid cycling - switching the motor on and off frequently and quickly.

Incorrect Ramp Up time when using a Soft Starter ¨C Maximum 4 seconds is allowed. DU has a separate bulletin covering the use of submersible motors with VVVF Drives and Soft Starters.

The Effects of Overheating on different parts of the motor are as follows:

Internal Cooling Fluid. The fluid will boil which will create steam inside the motor at high pressure. The steam will force it's way out of the motor, past the lip seals on the DE, or the Mechanical seal on the DE, or it can rupture the rubber bellows on the NDE. Steam will not transfer the heat from the internal components such as the stator windings or the rotor.

Stator Windings. Without efficient heat transfer in the cooling fluid the insulation will breakdown and short circuits and or earth faults will occur. If the fault is violent other parts of the motor can be damaged such as the lamination stack.

Bearings. The carbon sleeve bearings and thrust bearing will fail very rapidly without efficient fluid lubrication. Usually this occurs first in the upper sleeve bearing and leads to binding, rapid wear, and misalignment for the pump and the rotor.

Rotor. If the sleeve bearings wear sufficiently this can allow the rotor to rub against the stator, which is called ¡°poling¡±. This will cause localized high temperatures, and mechanical problems, that will quickly lead to catastrophic failure of the motor. It is quite common for some of the stator teeth to be dragged into the stator slot and cut through the wires in the stator winding, creating an earth fault.

Bellows or seals may deteriorate and rupture allowing the external fluids and foreign matter to enter the motor. The foreign matter can be abrasive, which will encourage wear if the motor continues to run.

Casings and Housings. In extreme situations it may be possible for the casing of the motor or the end brackets to warp and cause misalignment.

If the motor is subject to electrolysis, or bacteria build up, this can accelerate due to higher temperatures, which in turn will cause even higher temperatures.

Possible Reasons for Overheating

Overloading is usually caused by:

Excessive hydraulic load.

An oversized, or wrongly sized, pump fitted to the motor.

Misalignment.

Binding.

Failure of a component in the motor or the pump,

Foreign bodies, or solids, in the water being pumped.

Over frequency. Motors must be correctly selected to match the pump and the duty required.

If a motor is powered from a Generator Set, rather than the mains of a power utility it is possible that the supply frequency is higher than motor/pump design frequency. The characteristics of normal pumps are very sensitive to speed. Increased speed due to increased frequency will almost certainly raise the duty point of the pump and this can cause the motor to be overloaded.

Overloading of a motor will almost certainly cause overheating, however, overheating will not necessarily cause overloading.

High Ambient Water Temperature

Submersible Motor Engineering specify the maximum ambient water temperature, the minimum cooling water flow in m/sec, and the maximum full load output power for the motor. All of these conditions can vary in practice and this will affect the ability of the motor to dissipate the internal heat that is generated by the motor in operation. If the motor overheats because the maximum ambient cooling water temperature is exceeded the life of the motor will be reduced.

Low/High External Cooling Water Flow

The motor relies on the efficient transfer of heat from the external surface of the motor to the water flowing past the motor. If the flow is too slow the external water will heat up and create a similar condition to having a high ambient water temperature. Low flows are usually caused by:

Low Pump flow rate.

Incorrect application or design.

Plugged or blocked suction inlet.

Loss of suction.

Closed or blocked discharge.

Low pump speed.

Loose impeller or impellers.

Water flow into the pump from above the motor.

Motor installed below the well screen.

Pump suction inlet set at the same level as the well screen.

Large gap between the motor and the well liner.

Obstruction around the motor.

Motor buried in sand or silt.

Motor/Pump installed without a shroud in a tank or pit.

Motor/Pump installed in water with a very high concentration of Oxygen.

If the external cooling water is flowing too fast it may form a recirculating or turbulent layer along the surface of the motor. This layer may prevent the external surface of the motor from being able to dissipate the heat fast enough to cool the motor. High velocity flow conditions also cause a decrease in pressure which may cause dissolved minerals to precipitate out of the water forming a mineral plating on the surface of the motor which will also act as a form of thermal insulation and reduce the cooling capacity even further.

In some wells bacteria will grow on the external surface of the motor ¨C in extreme cases this can be a much as 10mm in 3 months. This bacteria growth also acts as thermal insulation and as it grows out towards the well liner it will force the external water flow rates to increase as the gap between the well liner and the bacteria surface on the motor reduces eventually causing excessive flow rates.

Low/High Voltages

Low voltages will lead to increased currents, as voltage and current are generally proportional if saturation effects are neglected. Increased currents will lead to increased heating in the stator winding. Low voltages will also lead to lower full load speed and increased slip. The pump will have a reduced performance leading to reduced water flow past the motor and possibly reduced cooling capacity.

High voltages will lead to a reduced stator current, until the voltage is sufficiently high that the lamination iron starts to saturate, at which point the current will start in increase leading to increased temperature rise. High voltages will also cause the motor to have increased starting torque and increased starting current, which will probably lead to higher temperatures during starting.

Incorrect Installation Procedures

The pump and motor must be assembled correctly. Any Misalignment or Binding can cause overloading of the motor.

Misalignment occurs when components are not machined correctly or not assembled correctly. All the components in the motor and the pump must be concentric within the tolerances specified by the manufacturer. Special attention must be paid to component fits, the balance and vibration of rotating components, clean assembly conditions with no foreign objects or matter in the assembly.

Binding is usually caused because there is insufficient room for axial or radial movement in the pump or because the shaft coupling is not fitted correctly. The coupling should not be pinned or fixed with a grub screw to the motor shaft ¨C it should be free to slide on the shaft to allow for thermal expansion of the motor shaft.

All water filled motors must be correctly filled prior to installation as the motor relies on this water to remove the heat generated in the water. If a motor is not properly filled there is a strong possibility the motor will overheat.

Great care must be taken during installation to ensure that whole motor/pump assembly is not damaged. Special care must be taken when lifting the motor/pump to the vertical position prior to lowering down the hole. Make sure the shaft is not subjected to excessive bending forces, which can bend the shaft.

Voltage and Current Unbalance

This is probably the single most common cause of motor failure. Generally this is caused by voltage imbalance, leading to current unbalance. Unbalanced currents will definitely lead to increased temperature rise in the stator winding. If the motor is fully loaded ¨C not de-rated ¨C it will almost certainly lead to stator windings exceeding safe temperature limits.

DU motors require that the Voltage balance must be within 3%.

Voltage Unbalance can be calculated using the following formula:

Voltage Unbalance % = 100 x Max. Voltage variation from Average / Average voltage.

DU has a separate bulletin especially covering Voltage and Current Unbalance.

Voltage Surges and Spikes

A High Voltage Surge is when the supply voltage increases substantially for a period of milliseconds or seconds. A spike occurs when there is a very high voltage transient for nanoseconds or milliseconds.

A surge is quite likely to occur when a generator supplying a motor runs out of fuel. When the fuel mix becomes very lean the engine speeds up and the output voltage from the generator increases. Spikes are usually caused by the switching of electrical equipment on the supply system ¨C not necessarily the actual contactors or circuit breakers operating the motor. Very large surges or spikes can be caused by indirect lightning strikes on the supply system.

This is a complex subject, however, in general, small voltage increase/short duration surges will tend to stress the windings causing gradual deterioration over a period of time, and eventually catastrophic failure of the windings.

Large voltage increase/long duration surges will severely stress the winding and connection points ¨C the weakest point in the winding or connections will fail usually causing a short circuit which can have enough energy to blow a hole in the lamination pack or even through the stator casing.

Small spikes will stress and degrade the windings and connection, while a large spike will almost certainly lead to immediate catastrophic failure.

Single Phasing

Single phasing occurs when 1 phase of a 3-phase supply is lost, i.e. there is no voltage on one phase.

In a Delta connected motor current will continue to flow in all 3 phases of the winding, but extremely high currents will flow in the phase connected directly between the 2 remaining voltage connections ¨C this phase will overheat and fail very quickly if the motor is not shut down very quickly.

In a Star connected motor current will continue to flow in the 2 phases connected between the 2 remaining voltage connections ¨C these 2 phases will overheat and fail is this condition is not detected very quickly and the motor disconnected from the supply.

If the motor is not operating and is switched on to a Single Phasing supply it will almost certainly not start and will draw high starting current as described about until it is disconnected. If the motor is already running and 1 phase drops out for whatever reason the motor will probably continue to run at reduced speed while drawing heavy current.

Phase Reversal

Phase reversal will result in the motor running in the wrong direction and in general the pump will operate very inefficiently, probably not drawing enough water past the motor to cool it properly.

Build up or organic or mineral material on the outside of the motor

Organic deposits are usually caused by iron bacteria. These bacteria produce a layer, or crust, of iron and/or magnesium compounds on the outside of the motor. These encrustations act as a thermal barrier and contain the heat within the motor. The presence of iron bacteria is usually a pre-existing condition.

Mineral deposits will cause the same type of thermal barrier as organic deposits. Chemical reactions precipitate the minerals present in the water and deposit them on the external surface of the motor. The most common mineral deposits are carbonates, iron, manganese, and silicates.

Rapid Cycling

Rapid cycling causes the motor to overheat, as it does not get sufficient time to cool down from the previous start/run. When a motor is started it draws 4 to 6 times the normal full load current. This increased current creates high temperatures in the stator and rotor windings. This is especially a problem if the motor is already hot because it has been operating at its nominal full load temperature. Several starts in quick succession will almost certainly cause the motor to overheat which will cause a degradation of the stator winding insulation and other internal components. Eventually the deteriorated conditions inside the motor will cause it to fail.

DU recommends that motors be allowed to cool for 15 minutes before being restarted. In some circumstances motors may require even longer to cool down, especially if the ambient water temperature is high.

DU also recommend that a motor is allowed to run for about 1 minute after start up to allow the heat generated during the starting cycle to partially dissipate.

The whole installation should be designed to keep the number of starts required by the motor to a minimum, which will increase the life of the motor.

Summary

Motor overheating is usually a symptom of other problems. Failure to investigate and determine the true reason for the overheating will lead to motor failures, extended down times, repeated repairs, and higher maintenance costs.

Unbalanced Currents and Submersible Motors

One of the most common causes of failure in Submersible Electric Motors is because of overheating due to unbalanced currents, usually caused by unbalanced voltages. IEC Report 892:1987 (AS1359.31 1997) states: "The application of unbalanced voltages to a three phase induction motor introduces a "negative sequence voltage", and this produces in the air gap a flux rotating against the rotation of the rotor, thus tending to produce high currents. A small negative sequence voltage may produce currents in the windings that are considerably in excess of those present under balanced voltage conditions. Consequently the temperature rise of the motor operating on a particular load and percentage voltage imbalance will be greater than for the motor operating under the same conditions with balanced voltages." This applies for all induction motors, but is especially critical for submersible motors because they operate at much higher current densities than standard air cooled motors and have a much lower tolerance to increased temperatures. If voltages are unbalanced then currents will almost certainly be unbalanced. Even if the voltages are balanced it is possible to have large current unbalance - if this is the case it is usually caused by the way the drop cables are arranged in the well. For example, we recently helped a customer experiencing 20 amps current unbalance with a 150Hp 8 Inch motor on full load, when the voltages were balanced within 1 volt at the surface. The drop cables had been tied to the flexible column with 2 phases on one side and 1 phase and the earth cable on the other to give a better mechanical balance. When the cables were rearranged with the 3 phases tied together on one side and the earth on the other side the currents were balanced within 2 amps. This large variation in current was caused by magnetic field linkage and interaction between the 3 phases, which was amplified over 250 metres of cable down the hole. We can expect increased, uneven, and localised heating in a motor because of unbalanced currents, so it is essential to ensure that the voltages and currents are balanced when motors are commissioned. If the voltage supply to the motor is solid and stable the currents will probably remain reasonably balanced, however, on some sites, such as mine sites, large variations can occur during the day as different parts of the plant are operated and alter the supply conditions. In this type of supply environment SME strongly recommend that voltage and current unbalance protection is included in the motor protection system. Voltage unbalance is more common in rural areas where there can be large single-phase loads, which unbalance the supply. To get an idea of the effect of voltage and current unbalance; for 1% voltage unbalance we can expect about 8% current unbalance and 10% increase in temperature rise. The correct way to calculate the percentage Current unbalance is to use the formula below:

Percentage Current Unbalance = (Maximum current difference from average current / average current) x 100

Procedure.

Measure the currents in all 3 phases.

Add the 3 measured currents and divide the total be 3, which gives the average current.

Calculate the amps unbalance for the worst phase by subtracting it from the average.

Divide the worst-case unbalance amps by the average and show as a percentage. This figure is know as the Percentage Current Unbalance and it should not be more that 5% for SME motors. (Most manufacturers do not allow more that 5% current unbalance).

Example:

Currents measured are 34, 36, and 40 amps.

The total of the 3 currents is 110, and the average is 36.67 amps.

Worst Case unbalance is 40 - 36.67 = 3.33.

Current Unbalance is 3.33 / 36.67 = 9%

A motor seldom has completely balanced currents even if the voltage supply is balanced so in some cases it is possible to balance the currents by rotating the motor connections. This should be done by moving all 3 connections in the same direction each time so that the direction of rotation of the motor is not changed. The currents should be recorded for each phase with reference to the supply and motor terminals. All 3 connection options should be tried and then the connection that gives the best result should be used.

If there is still significant current unbalance after the current unbalance has been reduced to a minimum by rotating the phases then it may mean considering de-rating the motor. This either means reducing the pump output by fitting a smaller pump or maybe by removing an impeller, or installing a larger motor. 5% current unbalance probably means that there is about 0.8% voltage unbalance.

As an alternative to derating it is possible to measure and monitor the actual temperatures in the motor using PT100s. SME fit 3 PT100s in the windings and in the slot as standard for all motors 8 Inch and above. In general SME will know where the winding hot spot is for different motors and they can then advise if it is safe to operate the motor when the actual temperatures are known, even if there is high current unbalance. In some cases the ambient water temperature may be low, or, the motor is not fully loaded by the pump, so the actual winding operating temperature will still be well within acceptable limits.

Current unbalance in an induction motor has a number of effects, which reduce the performance of the motor, but the most significant for submersible motors is the increase in temperature.

Any installation with more than 5% voltage imbalance is not suitable for use with submersible motors or any type of induction motor. The supply authority needs to fix the problem.

Thrust Bearings in SME Submersible Motors.

All SME submersible motors are fitted with Kingsbury type Hydrodynamic Self Adjusting Tilting Shoe Thrust Bearings to take the axial "down thrust" from the pump. These are a complex and clever part of a reliable submersible motor and probably not understood very well.

These thrust bearings will take a surprisingly heavy axial "down thrust" load and provided that they have been installed correctly, rated correctly, and looked after properly, they will provide may years of trouble free operation.

SME motors also have an "up thrust" bearing to take thrusts - usually these occur at start up while the discharge pipe work is filling. The "up thrust" can be significant if pipe work is long between the pump and the surface and the Non Return Valve (NRV) has been drilled to allow the column to drain. While the column is filling there is a large momentum force upwards, and the head, acting down, is low, and the pump is quite likely to be operating beyond its Best Efficiency Point (BEP). The "up thrust" tends to be heavier with closed type impellers. On some pumps the thrust will reverse just after the BEP.

SME recommend that pumps should be operated according to the pump manufacturer's recommendations. Pumps should have a means of accommodating temporary "up thrust" and the splined couplings between the pump and the motor should not be grub screwed.

The "up thrust" bearing in the motor is a fairly simple device, which consists of a resin/cloth fibre ring, which rubs against the underside of the Stainless steel Thrust Bearing Support plate. These bearings are not continuously rated and only take light loads.

Principle: The Hydrodynamic thrust bearing transmits the rotating shaft's axial thrust load to the frame of the motor, which is mechanically supported in the well.

The axial thrust load is transmitted through the bearing on a self-renewing film of lubricant, which is water in most SME motors. The pressure in the fluid film supports the load without the thrust disc or pivot shoes making contact.

Theory: Due to viscosity, fluids tend to stick to surfaces, and in the case of Kingsbury type thrust bearings, they rely on the fluid sticking to the surface of the rotating thrust disc. The fluid is dragged circumferentially as well as being thrown outwards by the rotating disc. At the leading edge of the pivot shoes, a continuous fluid wedge will form. When the right conditions exist the wedge will produce sufficient lift to create a physical separation between the thrust bearing disc and the face of the pivot shoe. At this point a true fluid film (TFF) is said to exist.

TFF is essential for the successful operation of the thrust bearing. When the bearing is operating correctly there is no contact at all between the disc face and the face of the pivot shoes. The only time there is contact is when the motor is stopping or starting. This brief contact period means there should be only negligible wear between the faces - and no wear while the motor is operating.

The adjacent sketch shows how the pivot shoe tilts over and allows the fluid to be forced between the carbon thrust disc and the face of the pivot shoe by a combination of rotational drag and centrifugal force. The pivot point should be spherical which allows the shoes to rotate or pivot so that the fluid can form a wedge. The shoes need to be loosely constrained while still free to pivot.

The carbon thrust bearing drags the fluid around in a circular direction, but this fluid also experiences a centrifugal force, which is pulling the fluid towards the circumference of the bearing. The combination of these 2 forces means that the fluid is circulating and going outwards at the same time and it has been found that the peak pressure point is somewhere beyond the centre in the direction of rotation. Quite often this is assumed to be on the face of the pivot shoe approximately 75% across the face of the pivot shoe and 75% out towards the circumference. This is known as the 75/75 Rule in Thrust Bearing design and is where the bearing has peak loading, minimum film thickness, and high temperatures. If the thrust bearing only operates in one direction it is common to offset the pivot point so it is nearer to the 75/75 point.

From the Pressure Distribution Curve it can be seen that peak load is not on the centre line of the pivot shoe, but offset in the direction of rotation.

Issues that need to be considered during the design of a hydrodynamic thrust bearing are maximum total loads, load per mm2 on the bearing surface, number of shoes, thrust disc surface speed, fluid viscosity, and maximum allowable fluid temperature. Hydrodynamic thrust bearings commonly have 6 or 8 pivot shoes because of the difficulty of ensuring that all the shoes share the load evenly. More shoes increase the likelihood of uneven loading because of variations in dimensions due to mechanical tolerances.

The thrust-bearing disc transmits the axial thrust load from the rotating shaft (rotor) through the fluid film to the stationary pivot shoes. A typical film thickness under rated thrust load can be 0.03 mm for a high performance thrust bearing.

Other Issues:

Cleanliness. It is very important that the inside of the motor is very clean with no loose material that could circulate in the water. All the Thrust Bearing components should be ultrasonically cleaned prior to assembly as any lapping paste that is not removed from the pivot shoes or the carbon disc will tend to circulate in the fluid. (Pivot shoes should also be demagnetised after grinding and lapping to ensure they do not attract any magnetic particles that might be present. Any foreign material, larger than the film thickness, that passes through the thrust bearing can damage the surface of the carbon surface of the thrust disc and can get imbedded in the surface of the carbon. (It is unlikely to scratch the face of the pivot shoes as these are specially hardened). Any water that is used to top up inside the motor should also be clean, but most tap water is fine.

Surface Finish and Tolerances. It is essential that the surface of the carbon thrust-bearing disc is machined flat and exactly perpendicular to the shaft with negligible run out on the face. The surface must be lapped to give a very smooth flat finish. The surface of the face of the pivot shoes is also ground and lapped to give a very smooth flat finish, and in addition the height of each pivot shoe in a set must be identical and the base of the pivot leg must be spherical so that the pivot shoes are free to pivot and share the load equally. Due to mechanical tolerances there will always be some variations in dimensions, but in general they should be tightly controlled. The design of the SME thrust bearing allows the whole thrust bearing assembly to swivel on the thrust button, which also allows the pivot shoes to share the load more evenly.

Speed of Rotation. It is important that thrust bearings are not operated at low speeds, or speeds well below their design operating speed. At the low speeds there will not be enough rotational speed to force the fluid through between the pivot shoe faces and the thrust disc, so the faces will be in contact as the motor rotates and this will lead to wear and heat generation due to friction. This can be a problem when using VVVF drives or soft starters and we recommend a maximum run up time of 4 seconds. It can also be a problem when the motor is switched off as the water in the column could flow back down through the pump in the reverse direction and cause the pump to rotate which will cause the bearing to rotate at a low speed. In most installations a check valve is fitted just above the pump, which will prevent this from happening, even though it is quite common for a small drain hole to be drilled in the check valve to allow the column to drain slowly after the motor/pump is switched off.

Temperature. The temperature of the fluid inside the motor can have a big influence on the performance of the bearing because the viscosity of the fluid will change with temperature and if the water temperature gets close to boiling point the water will loose all it’s viscosity and the bearing will fail. Because the TFF will not be maintained, sliding contact between surfaces will occur and wear will increase.

Lubrication and Film Thickness. For the bearing to operate properly the lubricating fluid must always be present between the carbon thrust disc and the faces of the pivot shoes. This fluid heats up as it passes through between the 2 faces of the bearing and needs to be cooled and recirculated before it passes through the bearing again. The fluid entering the bearing should always be reasonably cool before it enters between the bearing faces so it can cool the bearing as it passes through.

Shock Loading. This can occur when a pump starts to cavitate. These bearings will tolerate some shock loading, provided the peak shock load does not exceed the maximum load the bearing can take. If the maximum load is exceeded the carbon will make contact with the pivot shoes and high wear and high temperatures will result. In extreme cases the carbon will be pounded onto the pivot shoes and will then disintegrate.

Load distribution to the pads/pivot shoes. It is essential to ensure that the height of each pivot shoe is exactly the same so that each pivot shoe shares the load evenly. If one shoe is shorter than the other shoes then it will have a bigger gap between the face and the carbon and will not carry as much load as the other shoes. Likewise if one shoe is higher than the other shoes it will tend to carry a much higher load than the other shoes. (Please note that even if the load is not exactly evenly distributed across all the shoes in the thrust bearing it will still work, because all SME bearings are very conservatively rated).

Pressure Distribution in the film I Flow Requirements across the bearing. As the thrust load increases the pressure in the gap between the pivot shoes and the carbon will reduce. Any small scratches or indentations in the surface of the pivot shoes or the carbon will reduce the load carrying capacity, as some of the pressure in the fluid will be dissipated into these “voids”. It is essential that fluid inside the motor is free to circulate through the bearing and mix with the fluid around the bearing to dissipate the heat generated in the bearing.

Power Losses. As the thrust load increases on the bearing the power loading on the motor will increase. There is a direct linear relationship between the power consumed in the bearing and the thrust load. Typically for a 6 shoe 8” SME thrust bearing with 3000 Kg of “down thrust” the extra power required from the motor is 900 watts. This power is dissipated in heating the fluid and bearing surfaces.

Testing Thrust Bearings:

SME have recently commissioned a new Thrust Bearing Test rig, which will allow us to test different bearing designs and different materials, especially for the thrust disc. We recently tested a standard 6 shoe 6” bearing for 120 hours at 2500 kg and found no measurable wear on the face of the thrust disc or on the face of the pivot shoes. The load was increased in steps until the bearing failed at 4620 kg load. We rate this bearing at 2270 kg in a standard 6” motor.

Overload Settings and Temperature Protection

At SME we are committed to assisting our clientele to improve their level of expertise and understanding of the protection for submersible motors.

It seems to us that most electricians set the current overload protection about 5% above the nameplate full load current, regardless of the current the motor is actually drawing when it is operating, which will not protect the motor if it is only loaded to 70% of the nameplate current.

After the first few days of operation, submersible pumps and motors, tend to settle down and draw the same current for days, months, years - until something changes. Sometimes the load will fluctuate a little with irrigation applications, or supply voltage variations, etc., but generally the current will not vary.

In our opinion to protect the motor and pump the owner/operator needs to know when something changes so they can investigate that change. Quite often the reason for the change can be found on the surface and fixed very easily. A recent example we know about was a diesel generator that had sped up and was generating at 55Hz instead of 50Hz.

SME recently supplied a 300Hp 4P 14” motor with a nameplate current of 431 amps and the actual duty point current was 320 amps. The site electrician decided to set the current overloads to trip the motor at about 430 amps, which they did, after there had been a catastrophic failure. The motor only ran for 20 hours, and the pump and motor were then out of action for 4 weeks while everyone involved argued about what had happened and then agreed to get the motor fixed, which involved rewinding and rebuilding. We are certain that if the overloads had been set to 330 amps they would have tripped and alerted the owner that there was a problem. There is a reasonable chance that the reason for the trip could have been identified and fixed. Failing that, the motor could have been operated and monitored very closely. If the current had kept rising it would have indicated that something was seriously wrong and the motor and pump could have been pulled before there was a catastrophic failure. This would have reduced the down time that the pump was out of service, and reduced the costs to everyone involved.

This motor was also fitted with 4 x PT100 temperature detectors which were not connected and therefore not protecting the motor.

All SME motors are supplied with 1 PT100 in the DE Windings as standard and all motors of 100Hp or more are fitted with 4 PT100s as standard and customers are free to order additional PT100s in smaller motors, if they want.

At SME we confidently believe that a combination of “Quick Trip” current overloads and PT100 temperature monitoring will give end users a lot of comfort that their motors are operating properly, and if something does change, alert the end user that there is a problem before it is catastrophic.

There are 2 recent examples that we are aware of, where temperature monitoring has more than paid for the additional cost of installation.

A 60Hp 8” High Temperature oil filled motor was supplied to the Water Corporation of WA for a bore that has a big problem with Iron Bacteria growth. Typically the growth is about 10mm thick after 3 months of operation and most standard motors have to be pulled up and cleaned every 3 months to prevent them over heating. The new SME motor has 4 PT100s fitted and monitored and the Water Corporation can monitor the temperature in the motor, which has settled down at about 76 Deg.C. The motor has been operating for about 9 months and there is no plan to pull it up until a problem develops. In theory the winding temperature can be allowed to increase to 120 Deg.C. before we would consider that it is too hot. (The oil in this motor has been specially approved by the West Australian Health Department as safe to use in drinking water).

A 250Hp 4 Pole 14” motor on an offshore oil platform, was fitted with 4 PT100s, which were all being monitored continuously. This motor was subjected to very high thrust loading, possibly as high as 7000 Kgs. Due to a misunderstanding during testing each of the valves in the system were closed one at a time while the motor was still running. Luckily the Thrust Bearing PT100 detected a rapid increase in temperature from 46 Deg.C. to 95 Deg.C. and shut the motor down before there was any catastrophic damage. It was decided to check the condition of the thrust bearing after this episode and it was found to be damaged and was replaced.

In summary we urge all our customers to try to ensure that the current overload protection is set just above the steady state current during operation, and to install PT100 monitoring equipment, which we can supply, and advise on at a very attractive cost.

Submersible Motor Engineering design and build specialized motors for use SUBSEA, and for the off-shore industry.

SUBMERSIBLE MOTOR ENGINEERING designs, manufactures and supplies water filled and oil filled subsea submersible motors globally.

SUBMERSIBLE MOTOR ENGINEERING has a full Sales, Service & Repair division at our factory in Australia.

SUBMERSIBLE MOTOR ENGINEERING offers repair of all submersible electric motors, Submersible Electric Motors, and HPU’s.

Our motors and HPU’s are ideal for driving thruster systems, also excavation and hydraulic tools that require high power inputs.

Our submersible motors can also be used to drive other types of rotating machinery, such as water pumps for trenching machines.

Motor winding temperature and water ingress sensors are included.

High Reliability

Industry Proven Windings

Water Ingress and Temp. Sensors

Various Voltage Options (3300vac , 4160vac and 6600vac)

Interface Kits for a Range of Hydraulic Pumps

Motor Options for Pump Drives with a range of shaft speeds.

High efficiency submersible motors and HPU’s, for all subsea, ROV and trencher operations. The perfect power source supply for ROVs, Trenchers, TMS, and subsea tooling applications.

These motors are usually made to order, and vary from 1kW to 600kW, from 400vac to 3300vac, 4160vac, and 6600vac, 50 or 60 Hz, 2 Pole, and 4 Pole ( 8 Pole and 10 pole available by request).

There are 2 common methods of construction - stainless steel construction or Marine Grade aluminium that is Black anodized to resist corrosion.

These motors are usually oil filled, and pressure compensated. Our motors operate at depths down to 4000 metres.

SUBMERSIBLE MOTOR ENGINEERING offer complete submersible electric motor:

Rewind / rebuilding /electrical conversion / and construction modification.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING design, manufacture, and supply, submersible electric motors for bore holes. SUBSEA and ROV electric motors for subsea equipment. Submersible electric motors for sump pumps, and any special purpose submersible electric motor requirements.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING also offer SUBSEA electric generators for Tidal Power Generation.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING designs, manufactures and supplies, water filled and oil filled bore hole and subsea submersible motors globally.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING is a full Sales, Service & Repair company.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING offers repair of all makes of submersible electric motors.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING produces new Submersible and ROV Motors.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING also services and repairs all brands of Submersible and ROV Motors. Including Hitachi, Pleuger, Grundfos, Mercury, Byron Jackson, Haywood Tyler, & Franklin.

Our business is to manufacture, supply and service Submersible Electric Motors. With a compliment of 30 service orientated staff members we have the ability to, service and technically support all makes and models of Submersible Electric Motors at our Maddington, Perth (WA) facility. Our sales department, with a total of 75 years experience in the Submersible and Electric motor business. We are happy to assist with any enquiries on the purchase of all Submersible Motor Engineering products, ranging from 3.7kw to 1500kw, in various voltages and frequencies.

We manufacture, repair and rewind large high voltage (500kW, 6600V) submersible electric motors.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING offer High Temperature Submersibles in 6 inch to 20 inch frames suitable for operation in ambients of 75 Deg.C.

High Voltage water filled submersible motors (3300V, 4160V and 6600V).

Upgraded Temperature Monitoring unit available with new improved user friendly parameter setting.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING manufacture:

ROV motors suitable for depths of 4000m.

WD Series sump pump motors.

Subsea Electric Generators for Tidal Generation.

Induction Generators or slow speed Permanent Magnet Synchronous Generators up to 500kW.

SILVERCREST / SUBMERSIBLE MOTOR ENGINEERING offer:

New submersible motor sales.

	1.0 Hp to 1000 Hp. 4"-6"-8"-10" 12" 14" 16" & 20" standard and 316ss construction 2P & 4P speed. All voltages (motors wound to spec). Complete submersible electric motor rewind / rebuilding, electrical conversion, construction, and modification. Motor service exchange. Full range of rebuilt submersible electrical motors (12 month warranty).

SPECIFICATIONS FOR SUBMERSIBLE MOTOR ENGINEERING SUBSEA ELECTRIC MOTORS.

SILVERCREST/SUBMERSIBLE MOTOR ENGINEERING can design and build SUBSEA motors to suit most requirements, due our totally flexible design capabilities.

Flexible External Dimensions to suit all applications.

Dimensions to allow drop in replacement for existing units.

Anodised aluminium, or 316 stainless steel construction.

Power drive to load using an output shaft with a standard coupling, or close coupled.

Single drive shaft, or a drive shaft at both ends, (double shaft extension).

SUBMERSIBLE MOTOR ENGINEERING can design and build a motor with a completely new lamination to meet special design requirements, if necessary.

SUBMERSIBLE MOTOR ENGINEERING design their motors so they do not run hot. Typical motors can run on deck for at least 10 minutes on full load, with no cooling, without overheating. The motors are designed to be compact in size and suitable for heavy-duty applications, such as subsea trenching.

If weight is important, SUBMERSIBLE MOTOR ENGINEERING can design the motor for minimum weight by utilising an aluminium construction and a hollow motor shaft, etc., while still ensuring the motor is generously rated for full load operation. If the motor is going to drive a hydraulic pump we recommend a close-coupled arrangement to save the weight of the coupling and the coupling housing.

SUBMERSIBLE MOTOR ENGINEERING can design and build motors for all voltages to 6600 Volts with 50Hz or 60Hz frequencies, or for VVVF requirements. High Voltage motors can have random stator windings, or formed coils, depending on space and weight constraints. The winding wire for the High Voltage motors is double insulated and passes a twisted wire test at 16,000 volts and is rated up to 155 Deg.C. All windings are designed to keep 'turn to turn' voltage to a minimum. All winding materials and cables, are specially selected to be suitable for use in hydraulic oil.

In general the SUBMERSIBLE MOTOR ENGINEERING subsea submersible motors have low loss lamination steel (3 Watts/kg), which allows for higher flux densities, and less heat, with less material and weight.

All motors can be oil filled and we recommend hydraulic oils for good lubrication characteristics, in preference to electrical oil that has better di-electric capabilities, but worse lubrication capabilities.

If motors are going to drive a water pump Silvercrest/SUBMERSIBLE MOTOR ENGINEERING can design the motor to take the thrust load from the pump, and keep the sea water out of the motor with a single or double mechanical seal arrangement.

Thruster motors can be designed and built for voltage/speed control, which is a relatively simple speed control system, and they can also be built with a thrust bearing incorporated to take the thrust load from the impeller.

To ensure the integrity of the motor housing SUBMERSIBLE MOTOR ENGINEERING does not use castings. All components are machined from solid or from extrusions. The external aluminium components are typically 6061 T6 marine grade aluminium and hard anodised to a military specification.

All ball bearings are from well-known brands such as SKF, FAG, or NSK. Oil seals are high temperature and typically made from Viton. Mechanical seals are typically Burgmann.

All hardware used on SUBMERSIBLE MOTOR ENGINEERING SUBSEA motors is 316SS. All fixing holes are blind except the "oil in" and "oil out" fittings and the stator pack fixing bolt, if applicable.

The preferred power cable entry system for SUBMERSIBLE MOTOR ENGINEERING motors is to use an "oily tube" connected to an adaptor that is part of an oil tight rubber gland that is fixed to the stator frame. We do not recommend bringing the power cables through the end shields of the motor because this creates additional complications when the motors are stripped down during service, because the end shields cannot be readily removed from the stator. Subsea connectors can be offered as an alternative to the Oily Tube if requested.

SUBMERSIBLE MOTOR ENGINEERING strongly recommend that the motors are supplied with PT100s fitted in the windings and also in the bearings and that the internal motor temperature. SME can also offer additional protection with a water detector. The auxiliary connections for PT100s, can be made through standard high pressure, water tight, plug and sockets as supplied by "Subconn", "Impulse", and "Burton". These are also fitted to a connection block on the stator, not on the end shield.

All finished motors are pressure tested to ensure they are "oil tight" and suitable for compensated operation down to 4000 metres.

All motors are rated for continuous operation, and all prototype motors are full load performance tested at rated voltage and rated frequency, to confirm their performance characteristics. All motors can be issued with a "Type Test Certificate" or even full load tested at additional cost, if required.

SUBMERSIBLE MOTOR ENGINEERING can arrange for hydraulic pumps to be set up and tested on the motors at rated voltage and frequency.

SUBMERSIBLE MOTOR ENGINEERING can supply Hydraulic Power Units complete with the addition of a customer specified Hydraulic Pump.

SUBMERSIBLE MOTOR ENGINEERING is a fully quality assured company to ISO 9001.2000 for "Design, development, manufacture, and testing of submersible electric motors and electric motors for remotely operated vehicles".

SUBMERSIBLE MOTOR ENGINEERING Subsea motors can be designed and built for all subsea applications, ROVs, Trenchers, Ploughs, Submarines, and Dredges.

All makes of subsea motor can be serviced, repaired and tested by SME. In some cases the original motors can be significantly upgraded. If you are having problems with your existing subsea motors please contact SUBMERSIBLE MOTOR ENGINEERING - we are keen to help, and we are very price competitive.

At SUBMERSIBLE MOTOR ENGINEERING we are continually working on improving the performance of our products and for this reason we reserve the right to make changes without notice to any of the data in this brochure. Please contact us direct for confirmation of any drawing dimensions or performance data.

ELECTRIC MOTORS FOR SUBSEA MINING.

Submersible Motor Engineering are a leading supplier of Electric Motors for subsea applications such as ROVs, TMS units, HPUs, Subsea Trenching machines, and Subsea Ploughs.

SUBMERSIBLE MOTOR ENGINEERING was recently awarded a contract to design and build a set of electric motors for a Subsea Mining project which is understood to be the first deep water Subsea mining project in the world. The motors will have to operate at up to 2,000 metres depth, and will be subject to continuous heavy vibration of up to 10 mm/s and shock loading up to 10G. Due to the depth and the high power requirements it was decided the machines had to operate at 6600 volts to reduce the current in the long umbilical power supply cable.

SUBMERSIBLE MOTOR ENGINEERING commonly produce motors to operate at 3000, 3300, and 4160 volts, but 6600 volts posed some new challenges as we needed to design and build the motors with hot pressed formed coil stator windings. The shock and vibration requirements also required the selection of a very heavy duty bearing arrangement, which was reviewed by SKF to ensure the final design was more than capable of handling the required duty.

There are three different mining machines, and they require five different types of motors which drive the cutter heads, slurry pumps, and hydraulic power units, (HPUs). The cutter head motors are rated at 300kW and 600kW, 4 Pole. The slurry pumps at 330kW, 6 Pole, and 650kW 12 Pole. The HPU motors at 400kW 4 Pole. The motors were all full load dynamometer tested by SUBMERSIBLE MOTOR ENGINEERING. All of the motors except the HPU motors will operate with Variable Frequency Drives and these motors were dynamometer tested with the drives. All of this testing was undertaken with the customer at SUBMERSIBLE MOTOR ENGINEERING’s Maddington factory. All the motors have all been delivered to the customer.

18 inch AND 22 inch Motors.

SUBMERSIBLE MOTOR ENGINEERING now produce 18 inch and 22 inch motors with 2 or 4 pole speeds. These motors are water filled and available with 2300, 3300, 4160, or 6600 volt windings. The thrust bearings are continuously rated at 7,700 kg (17,000 lbs).

SUBMERSIBLE MOTOR ENGINEERING recently supplied two motors rated at 625Hp, 4160 volts, 4 pole, which have a continuous thrust load of about 7,000 kg and a closed valve thrust load of about 10,000 kg. Prior to installation these motors and pumps were independently tested by S&N Pumps in Houston.

These motors can be supplied in 316 Stainless Steel or Duplex Stainless Steel. As with all the SUBMERSIBLE MOTOR ENGINEERING product range, these motors are also available with SUBMERSIBLE MOTOR ENGINEERING’s Heat Exchanger cooling system to ensure the motors are suitable for the most demanding applications.

SUBMERSIBLE MOTOR ENGINEERING now offer 6”, 8”, 10”, 12”, 14”, 16”, 18” and 22” motors as standard and stock motors up to 16” in Perth at our factory.

WD MOTORS.

SUBMERSIBLE MOTOR ENGINEERING have been producing their range WD “sump pump” motors for many years to cover a broad range of submerged pumping applications. The WD range from SUBMERSIBLE MOTOR ENGINEERING offers a motor that is suitable for an extremely broad range of uses. The mechanical interface can be designed to match many different types of pumps. These motors has been designed to operate as a wet motor, either in a sump or mounted in a manifold, or as a dry motor with a water jacket feed from the pumped liquid.

A recent customer had an existing pumping station on a river bank in Queensland. He needed a motor that could be fitted to the existing pumps. The original pumps were flooded regularly which caused the air cooled motors to fail. The new motors were required to operate in a dry environment most of the time, but to also be able to operate during the regular floods that occurred at the site. SUBMERSIBLE MOTOR ENGINEERING provided three 150kW, 4 Pole, WD motors fitted with a water jacket to allow long term reliability in an ambient that regularly reaches in excess of 40 Deg C. The Water Jacket was fed by a small bleed from the Pump Discharge. These motors were installed on the pumps and were operating well despite being flooded several times in their first few months of operation. WD Motors are a very flexible product and SUBMERSIBLE MOTOR ENGINEERING can engineer these motors to solve many complex applications.

HIGH VOLTAGE SUBMERSIBLE MOTOR REPAIRS.

SUBMERSIBLE MOTOR ENGINEERING design and manufacture large High Voltage Submersible Motors so we are quite capable of servicing and maintaining other brands of submersible motors. SUBMERSIBLE MOTOR ENGINEERING has repaired numerous Pleuger, Weir, Haywood Tyler, and Byron Jackson, high voltage sea water lift pump motors for some of the premier oil companies around the world.

SUBMERSIBLE MOTOR ENGINEERING is the service supplier of choice for Oil and Gas, Mining, and the Municipal Water Supply Industries, especially in Australia, New Zealand, and South East Asia. In most cases SUBMERSIBLE MOTOR ENGINEERING can offer and deliver a much quicker and cost effective repair than the original OEM.

SUBMERSIBLE MOTOR ENGINEERING can also provide full load pump testing to ensure the repaired motor will be reliable before it is re-installed.

SUBMERSIBLE MOTOR ENGINEERING can also offer on-site inspection, provision of on-site spares, training of staff about maintenance and maintenance issues, and commissioning staff during installations.

SUBMERSIBLE MOTOR ENGINEERING should be the first choice for the provision of Maintenance and Service of Submersible Electric Motors.

DYNAMOMETER LOAD TESTING.

SUBMERSIBLE MOTOR ENGINEERING have increased their load testing capacity in Maddington with the acquisition of a new 2,500kW “water brake” dynamometer and additional high voltage transformers, switchgear, and instrumentation. SUBMERSIBLE MOTOR ENGINEERING can now provide a broad range of no load and full load testing at 50 or 60 Hz, and typical voltages of 2300, 3000, 3300, 4160, and 6600 volts. The extensive range of transformers and voltage regulators as well as multiple dynamometers means SUBMERSIBLE MOTOR ENGINEERING can ensure that new, and repaired, motors, are tested to ensure they meet any applicable requirements and specifications.

SUBMERSIBLE MOTOR ENGINEERING NEW OFFICE.

SME have recently moved into bigger and better premises in Phoenix, Arizona. The new factory has 17,500 sq ft (1,622 m2) of space and has been set up to offer customers the repair and rewinding of submersible motors. There is a fully equipped machine shop, winding shop, and testing facility. The new building has a 600 amp power supply, so they can run large motors on no load.

SUBMERSIBLE MOTOR ENGINEERING carry a large stock of new submersible motors and plan to increase this in the near future.

PERMANENT MAGNET GENERATORS FOR TIDAL GENERATION.

SUBMERSIBLE MOTOR ENGINEERING recently built a prototype subsea generator that was rated at 100kW, 40 Poles, (18 RPM), and 500 Volts. The generator is air filled as it is not expected to operate below 20 metres of depth, and weighed 4.5 tonnes fully assembled.

The generator was full load tested, which was quite complicated to organize, as we needed a 1.5 MW variable speed motor/drive and a 10:1 ratio gearbox that could handle the full load torque of approximately 60,000 Nm. The performance matched the design quite closely, with an efficiency of 86%, and a PF of 0.99. This generator was designed for very low speed operation to negate the need for a gearbox, however, SUBMERSIBLE MOTOR ENGINEERING now believe it is probably better to design the generator for a higher speed with a single stage gearbox.

Submersible Motor Engineering manufacture:

High temperature submersible subsea motors for 55 deg.C. water ambient.

High efficiency water filled submersible subsea motors.

All stainless steel construction submersible subsea and ROV motors.

Full performance testing of submersible motors.

1000V and other special voltages - NO PROBLEM!

Super Duplex submersible subsea motors.

We offer a wide range of electric submersible motors, with matched hydraulic and water pumps for use subsea, and with underwater vehicles, and ROVs.

Drop in replacement motors for most of the popular submersible motors in use offshore and subsea.

Subsea ROV Trenching Motors, Hydraulic Pumps and Water Pumps.

We supply ROV HPU submersible motors from 30kW to 150kW.

Trenching HPU submersible motors from 100kW to 500kW.

Subsea trenching jetting pumps, subsea plough HPU submersible motors, subsea plough jetting pump sets, turbine and centrifugal water pumps, and hydraulic pumps (including Rexroth, Sauer, and Kawasaki).

HPU (Hydraulic Power Units) for subsea, and ROV operations.

Submersible Motor Engineering Hydraulic Power Units (HPU) are used throughout the subsea oil and gas industry, for subsea hydraulic power generation, and for running high pressure/high flow water pumps.

Submersible Subsea Motors.

SME design and manufacture a world leading range of Subsea Electric Motors, including motors for HPU's on ROV's, Electric Thrusters for Manned Submarines, and Heavy Duty Jetting Pumps on Subsea Trenchers.

SME motors are robust and reliable in the toughest of environments. Our flexible design capabilities mean we can manufacture Subsea Motors to suit any application. Our range of motors allow Flexible External Dimensions to suit all requirements and provide the possibility of "Drop In" replacement motors.

SME have produced over 100 different types of Subsea motors and thousands of motors.

We offer a variety of Construction Materials from Anodised Aluminium to Exotic Stainless Steel Alloys to ensure long term reliability in varied environments whilst still offering the advantages of light weight design.

To ensure the integrity of the motors SME does not use castings, and all components are manufactured from solid metal or extrusions.

Motors can be offered with a variety of Interfaces for Driven Equipment from Robust Shafts with Multiple Shaft Seals, to Close Coupled Motors with Female Spline Hubs to allow direct fitment of Hydraulic Pumps.

SME can design and manufacture from the "Lamination Up" to ensure the Motor is ideally suited for the application. This bespoke Manufacturing policy ensures we can meet any special design requirements.

SME can build motors from Fractional Kilowatt Motors right through to large outputs in the Megawatts and above to ensure we meet all requirements.

SME Subsea Motors can be manufactured in all voltages through to 6600V at 50Hz or 60Hz, or for use with variable Speed Drives.

Due to SME's proprietary Insulation System motors up to 4160V can be built with a Random Winding to reduce size and weight whilst losing nothing in terms of reliability.

This insulation system is specifically engineered to ensure suitability of operation in Hydraulic Oil or many of the Bio-Degradable Oils commonly used for Compensation circuits.

All motors are designed for external compensation allowing for operation at depths as much as 4000M.

The Motors can also be offered with Cooling circuits to ensure high output motors maintain minimal operating temperatures at Full Load.

SME Motors are fitted with Water Detection Probes and Temperature Detectors and these can be terminated to a variety of different Subsea Connectors. Power can be supplied to the motors through Subsea Connectors or Highly reliable Oily Tube Connections.

SME's extensive testing facilities ensure we can test these Subsea Motors at rated Voltage and Frequency. This testing can also involve Hydraulic Load testing on a HPU or Flow and Pressure Testing of Jetting Pump in our Test tank. Full string testing involving the Drives, Control Gear, Motor and Driven equipment can also be organised.

Submersible Motor Engineering's extensive Service Capability also ensures we are best location for Service and Refurbishment of Subsea Motors of any manufacturer. Quite often SME can return motors to their clients in a better than new condition due to our ability to implement the latest Engineering Practices into the repair process.

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