W4.B / WE.B water-cooled induction motors 37–5500 kW
Country: Germany · Model: W4.B / WE.B
Three-phase squirrel-cage induction motors with water cooling of the stator, rated 37–5500 kW in frames 225–710. Series W4.B and WE.B are intended for pumps, fans, compressors, generator and marine drives where high power must run for long periods in a limited space with higher noise requirements.
- Series
- W4.B, WE.B
- Frame
- 225–710 (LV catalogue: 225–400, 30–710 kW)
- Power
- 37–5500 kW
- Voltage (LV catalogue)
- 50 Hz: 230, 400, 500, 690 V; 60 Hz: 275, 460, 480, 600 V
Technical specifications
| Series | W4.B, WE.B |
|---|---|
| Frame | 225–710 (LV catalogue: 225–400, 30–710 kW) |
| Power | 37–5500 kW |
| Voltage (LV catalogue) | 50 Hz: 230, 400, 500, 690 V; 60 Hz: 275, 460, 480, 600 V |
| Efficiency | unclassified, IE1–IE4 |
| Speed | 3000, 1500, 1000, 750 rpm |
| Cooling | IC71W (IC31W on request) |
| Protection degree | IP55, optionally IP56, IP65 |
| Housing | up to 280 — cast iron with cast-in tubes; from 315 — double-wall welded steel |
| Duty types | S1, S2, S3/S6 |
| Water temperature | up to 35 °C |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Cooling water circulates through channels in the housing. Up to frame 280 the housing is grey cast iron with cast-in cooling tubes, and from frame 315 it is a double-wall welded steel structure. Water supply and return are on the non-drive end. Water cooling noticeably reduces noise compared with surface air cooling of the same frame, gives a more compact and powerful motor, damps vibration well and removes heat without heating the room. Protection degree is IP55, optionally IP56 and IP65, mounting IM B3, B35, B5, cooling IC71W, and IC31W on request, optionally an RFID transponder. Terminal boxes, bearing shields, winding insulation and paint correspond to the standard design.
How to choose
According to the low-voltage machine catalogue, motors of frames 225–400 rated 30–710 kW are made for the standard voltages of EN 60038. At 50 Hz these are 230, 400, 500 and 690 V, and at 60 Hz 275, 460, 480 and 600 V. Torque is 146–5400 N·m, duty types S1, S2 (10/30/60 min) and S3/S6, water temperature up to 35 °C. Efficiency classes are unclassified, IE1, IE2, IE3 and IE4, speeds 3000, 1500, 1000 and 750 rpm, with multi-speed versions on request.
Request a price and lead time
W4.B / WE.B water-cooled induction motors 37–5500 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What power and frames do W4.B and WE.B motors have?
Power 37–5500 kW in frames 225–710. For the low-voltage catalogue these are frames 225–400 and 30–710 kW.
How is water cooling better than surface air cooling?
It noticeably reduces noise, damps vibration and gives a more compact motor. Heat is removed by water without heating the room.
What is the permissible cooling water temperature?
Up to 35 °C. Cooling is to scheme IC71W, and IC31W is available on request.
What voltages are the motors designed for?
Per EN 60038, at 50 Hz these are 230, 400, 500 and 690 V, and at 60 Hz 275, 460, 480 and 600 V.
Where are this manufacturer's water-cooled motors used?
The site mentions the use of water-cooled PM motors on eco-friendly ferries. The series also replaces water-cooled motors of pump and compressor units.
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Need a price, lead time or replacement?
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