Large synchronous motors 0.3–120 MW, including variable-frequency and explosion-proof
Large synchronous motors rated from 0.3 to 120 MW for driving high-power machinery at constant and variable speed. Designs include salient-pole and non-salient-pole, variable-frequency, explosion-proof brushless-excited and vertical low-speed motors. They are used in power generation, metallurgy, water management, petrochemicals and on gas pipelines.
- Power
- 0.3–120 MW
- Types
- salient-pole and non-salient-pole; variable-frequency; explosion-proof with brushless excitation; vertical low-speed
- Records
- 120 MW salient-pole (largest in the world); 40 MW non-salient-pole; 24 MW 6000 rpm for gas pipeline compressors; 20 MW 4800 rpm 10 kV
- Examples
- drive motors of 2250 mm and 2050 mm rolling mill stands; vertical 3000 kW 24-pole for a pumping station
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The company's electric motor business dates back to 1959, when the first 7 kW induction motor and the first 480 kW synchronous motor were produced. Today the range comprises about 180 series and 1890 frame sizes with ratings from 0.18 to 120 000 kW and rotational speeds from 5 to 10 000 rpm.
Large synchronous motors are produced with ratings from 0.3 to 120 MW for driving high-power machinery at constant and variable speed. The range includes salient-pole and non-salient-pole machines, variable-frequency motors for main drives of rolling mills, explosion-proof high-speed brushless-excited motors for compressors of main gas pipelines, and vertical low-speed motors for pumping stations. Compressor motors run at high speed, while pumping stations use vertical low-speed machines. The frame size is selected for the rating and rotational speed of the specific machine.
Among record-setting products, the 120 MW salient-pole synchronous motor is, according to the manufacturer, the largest in the world by rating, and the non-salient-pole one is rated 40 MW. China's first explosion-proof brushless-excited synchronous motor, 24 MW at 6000 rpm, for pipeline compressors passed qualification tests in 2019 and remains the largest in the country by rating. A 20 MW motor at 4800 rpm of the 10 kV class for pipeline compressors has also passed tests. A 20 MW motor-generator with direct coupling has been created for high-speed applications.
For metallurgy, variable-frequency motors have been supplied for the finishing train of the 2250 mm hot strip mill (Baosteel Zhanjiang), the largest in China by unit rating, motors for the 2050 mm mill (Xichang) and motors for the 4.3 m plate mill with one of the highest torques in the country. For water management a 3000 kW vertical synchronous motor with 24 poles was built for the Lianhu pumping station of the Dongjiang–Shenzhen water supply system.
The motors are used in power generation, ferrous metallurgy, water management, the oil and chemical industries, mining, the cement industry and on main pipelines. Electric drives complete with frequency converters are also supplied, and service is provided. Manufacturing takes place in Deyang (Sichuan, China).
Technical specifications
| Power | 0.3–120 MW |
|---|---|
| Types | salient-pole and non-salient-pole; variable-frequency; explosion-proof with brushless excitation; vertical low-speed |
| Records | 120 MW salient-pole (largest in the world); 40 MW non-salient-pole; 24 MW 6000 rpm for gas pipeline compressors; 20 MW 4800 rpm 10 kV |
| Examples | drive motors of 2250 mm and 2050 mm rolling mill stands; vertical 3000 kW 24-pole for a pumping station |
| Industries | gas pipeline transport, metallurgy, water supply and land reclamation, petrochemicals, power generation |
Request a price and lead time
Large synchronous motors 0.3–120 MW, including variable-frequency and explosion-proof. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What is the power range of large synchronous motors?
From 0.3 to 120 MW. The manufacturer calls the 120 MW salient-pole motor the largest in the world, and the non-salient-pole one is rated 40 MW.
Are there explosion-proof motors for compressors?
Yes, an explosion-proof brushless-excited synchronous motor of 24 MW at 6000 rpm for gas pipeline compressors. There is also a 20 MW motor at 4800 rpm of the 10 kV class.
Which motors are supplied for rolling mills and pumping stations?
For hot rolling mills of 2250 mm and 2050 mm, variable-frequency motors; for a pumping station, a 3000 kW vertical motor with 24 poles.
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