High-voltage induction motors with squirrel-cage and wound rotor up to 15 kV, 1000–35,000 kW
High-voltage induction motors with a squirrel-cage or wound rotor rated 1000–35,000 kW for voltages up to 15 kV from the grid. For operation from a frequency converter they are built for voltages up to 10 kV and power up to 50 MW. The motors are used in oil and gas, chemicals, metallurgy, mining, power generation and shipbuilding.
- Power
- 1000–35,000 kW (fixed speed); up to 50,000 kW when operated from a converter (induction and synchronous)
- Voltage
- up to 15 kV from the grid; up to 10 kV from a converter
- Rotor
- squirrel-cage or wound
- Cooling
- all standard methods; liquid jacket up to 10 MW
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The motors are made by a German plant in Bremen founded in 1915. For more than 60 years it was part of a large electrical engineering group and was responsible for motors and generators up to 60 MW. Each motor is built individually for a specific drive task, both the electrical part and the mechanics. The machine is fitted to existing foundations, and special bearing units are used for additional forces on the shaft.
The range covers ratings of 1000–35,000 kW with a squirrel-cage or wound rotor. For grid supply the motors are built for voltages up to 15 kV and power up to 35 MW at fixed speed. For operation from a frequency converter the voltage is up to 10 kV and power up to 50 MW, with adjustable speed. Starting from the grid is done through a reactor or a starting transformer. All standard designs, degrees of protection and cooling methods are available, including air-to-air and air-to-water coolers, and for machines up to 10 MW also a liquid jacket on the frame. The electrical design takes the local grid parameters into account to limit the voltage dip during starting and to obtain stable acceleration. The design is optimised for efficiency. For aggressive environments, corrosion-resistant materials are selected.
Motors with shaft heights up to 900 mm are built in a patented tubular frame. It reduces magnetic noise and vibration, so no additional noise protection measures are needed. For hazardous areas zones 1 and 2 there are versions with purging under overpressure Ex px and Ex pz, and increased safety Ex e and Ex nA according to ATEX 2014/34/EU, IECEx and IEC/EN 60079.
Example of delivery: 7200 kW induction motors, 323 rpm, weighing 51 t for reciprocating gas compressors at a refinery. Fields of application. Oil and gas, chemicals, metallurgy, mining, power generation, shipbuilding, test benches. The plant holds DIN EN ISO 9001, 14001 and 45001 certificates and a DEKRA approval according to ATEX (groups I and II, categories M2 and 2G, rotating electrical machines and terminal boxes). The declared characteristics are confirmed on the company's own test field in Bremen.
Technical specifications
| Power | 1000–35,000 kW (fixed speed); up to 50,000 kW when operated from a converter (induction and synchronous) |
|---|---|
| Voltage | up to 15 kV from the grid; up to 10 kV from a converter |
| Rotor | squirrel-cage or wound |
| Cooling | all standard methods; liquid jacket up to 10 MW |
| Frame | patented tubular frame up to shaft height 900 mm (reduced magnetic noise and vibration) |
| Explosion protection | Ex px, Ex pz, Ex e, Ex nA (ATEX 2014/34/EU, IECEx, IEC/EN 60079) |
| Design | individual: adaptation to existing foundations, special bearing units |
Request a price and lead time
High-voltage induction motors with squirrel-cage and wound rotor up to 15 kV, 1000–35,000 kW. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What power range do the induction motors have?
The induction motors are built for 1000–35,000 kW. When operated from a frequency converter, power can reach 50 MW.
What voltage are the motors built for?
Up to 15 kV for grid supply and up to 10 kV for operation from a frequency converter. The rotor is squirrel-cage or wound.
Are versions for hazardous areas available?
Yes, for zones 1 and 2 there are Ex px, Ex pz, Ex e and Ex nA versions according to ATEX 2014/34/EU, IECEx and IEC/EN 60079.
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