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220ST-H16A15-670V-SS850
wheatstone
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Product Description
The WHEATSTONE UnderWater Motors. An oil-filled submersible motor is a specialized motor filled with insulating oil to withstand high pressures in the deep sea and provide effective cooling and lubrication; it serves as the core power equipment for underwater operations.
Internal oil filling and pressure equalisation:
The motor is filled with mineral oil (or transformer oil) with high insulating and lubricating properties, which serves to cool and lubricate the motor. Crucially, it is fitted with a pressure compensator that ensures the internal oil pressure remains slightly higher than the external water pressure (for example, maintaining a positive pressure differential of 0.05 MPa), thereby effectively preventing seawater ingress.
Sealing system:
A dual-seal design is employed, with mechanical seals used at dynamic sealing points such as the shaft extension end, whilst oil-resistant rubber ‘O’-rings are used at static sealing points such as the housing joint surfaces; together, these prevent oil leakage and the ingress of external water.
Auxiliary systems:
Some advanced designs also incorporate an automatic water-removal system which, in the event of accidental seawater ingress, utilises the pressure differential generated by the rotor’s rotation to drive the circulation of hydraulic fluid and purify it via a water-removal unit (such as a desiccant tank), thereby extending maintenance intervals. At the same time, various sensors—including those for temperature and water ingress—are installed within the motor to enable real-time monitoring and protection.
Motor Type: DC Servo Motor
Submersion Depth: 850 metres
Cooling Method: Natural / Optional water-cooled design
Housing: Stainless steel or coated alloy for anti-corrosion
Insulation: Moisture-resistant winding insulation
Motor Dimensions
Electrical Parameters
| Main performance parameters | |||
| Rated Power(KW) | 25 | Maximum Speed(RPM) | 1800 |
| Rated current(A) | 44 | Rated Voltage(V) | 670VDC |
| Rated speed(RPM) | 1450 | Insulation Class | H 155℃ |
| Rated Torque(NM) | 165 | Safety Class | Withstands water pressure at depths of 850 meters |
| Maximum Torque(NM) | 330 | Weight(KG) | |
FAQ
86-0519-86163211，86-0519-86163212 
