Synchronous motors up to 50 MW, up to 15.75 kV
Synchronous motors are high-voltage machines with power up to 50 MW for drives of large pumps, compressors and other mechanisms with constant rotational speed, where high efficiency and the ability to compensate reactive power are important.
- Power
- up to 50 MW
- Voltage
- up to 15.75 kV
- Rotational speed
- up to 3600 rpm
- Frequency
- 50 / 60 Hz
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Synchronous motors are high-voltage machines with power up to 50 MW for drives of large pumps, compressors and other mechanisms with constant rotational speed, where high efficiency and the ability to compensate reactive power are important. The design of each machine is optimized to the customer’s requirements and calculated for any mechanical stresses and load fluctuations. Catalogue parameters: power up to 50 MW, voltage up to 15.75 kV, rotational speed up to 3600 rpm, frequency 50/60 Hz, insulation class F or H with temperature rise per class B or F. Rolling, sliding or thrust bearings, degree of protection IP23–IP55, salient-pole or non-salient-pole rotor, moment of inertia matched to the mechanism, horizontal or vertical design. Cooling open, CACW (air–water) or CACA (air–air). Installation in ordinary and explosion-hazardous areas is possible. Excitation is a brushless system with a rotating rectifier or a static excitation system, depending on the application; the slip rings are designed and manufactured in-house. In salient-pole machines the pole wheel is shrink-fitted onto the shaft, and the wound poles are fastened with bolts or wedges depending on rotational speed and power. Stator: welded steel frame, laminated core of cold-rolled steel, epoxy-mica winding insulation with robotic tape winding and global vacuum-pressure impregnation. For high-power vertical pump units the manufacturer produces thrust and radial bearings; flywheels, hydraulic or pneumatic brakes and ratchet devices that prevent reverse rotation of the pump are provided. Starting is direct-on-line, from a frequency converter (VFC) or from a static starting device (SFC), depending on the pump starting conditions, with the valve closed or open. Example supply: a 40 MW, 11 kV, 250 rpm, 26-pole synchronous motor for the Kalleshwaram pumping station (Telangana, India), built as a replacement for the existing machine. Applications: irrigation and water-supply pumping stations, compressor stations, metallurgy, mining.
Technical specifications
| Power | up to 50 MW |
|---|---|
| Voltage | up to 15.75 kV |
| Rotational speed | up to 3600 rpm |
| Frequency | 50 / 60 Hz |
| Rotor | salient-pole / non-salient-pole |
| Excitation | brushless / static |
| Insulation class | F or H |
| Degree of protection | IP23–IP55 |
| Cooling | open / CACW / CACA |
| Starting | direct-on-line, VFC or SFC |
Request a price and lead time
Synchronous motors up to 50 MW, up to 15.75 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
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