What is a three-phase motor?
A three-phase motor (three-phase asynchronous or induction motor) is the workhorse of industry. It runs on a three-phase supply, is simple and robust, and drives pumps, fans, compressors, conveyors and machine tools. Buyers searching motor three phase normally want to know which frame and power to fit their machine.
Low voltage or high voltage?
| Voltage | Power range | Best for |
|---|---|---|
| Low voltage (380 V) | Up to roughly 200 kW | Standard pumps, fans, conveyors, compressors. |
| High voltage (3 kV / 6 kV / 10 kV) | Above ~200 kW | Large pumps, mills, crushers and plant drives. |
How to select a three-phase motor
- Power (kW) — slightly above the load shaft power, with duty margin.
- Speed (rpm) — 2900 / 1450 / 960 / 740 rpm; choose to match the driven machine.
- Efficiency — an IE3 (YE3-series) motor cuts running cost.
- Mounting & enclosure — foot or flange, IP55 for dusty/outdoor sites.
Wangpai three-phase ranges
| Series | Application |
|---|---|
| YE3 series | IE3 low-voltage three-phase motor for general duty. |
| Y series (high-voltage) | Large squirrel-cage high-voltage motor. |
| YPT series | Asynchronous servo motor where speed control is needed. |
Three-phase motor FAQ
What does ‘three phase’ mean?
It means the motor runs on a three-phase AC supply, which gives a rotating magnetic field and smooth torque without extra starting gear.
Can I get a 22 kW or 30 kW three-phase motor?
Yes. Standard low-voltage three-phase motors are available in a full range of kW ratings — 7.5, 11, 15, 22, 30, 45, 55 kW and beyond.