Compressor motor duty
A compressor motor drives air, gas or refrigerant compressors. Compressor duty demands a motor with enough starting torque for an unloaded-to-loaded start, steady running under load, and often a higher protection class. Buyers searching compressor motor, air compressor motor or compressor motor supplier need the right kW, speed and starting method.
Compressor motor types
| Compressor | Typical motor |
|---|---|
| Reciprocating / piston compressor | High-starting-torque asynchronous motor (YE3). |
| Screw / rotary screw compressor | Asynchronous or variable-speed motor. |
| Large plant / industrial compressor | High-voltage motor (Y, YKK) or energy-efficient design. |
How to select a compressor motor
- Starting torque — match to how the compressor is loaded at start.
- Power (kW) — from compressor flow, pressure and duty.
- Speed (rpm) — direct or belt/gearbox coupled.
- Starting method — DOL, star-delta or soft start for larger motors.
Wangpai compressor motor ranges
| Series | Application |
|---|---|
| YE3 series | IE3 low-voltage motor for standard air compressors. |
| Y series (high-voltage) | Large squirrel-cage motor for plant compressors. |
| YKK series | High-voltage air-cooled motor for big compressor drives. |
| YPT series | Variable-speed motor where capacity control is needed. |
Compressor motor FAQ
What power compressor motor do I need?
From the compressor's flow and working pressure. Sizes range from a few kW on small shop air compressors to hundreds of kW on industrial plants.
Should a compressor motor be high voltage?
For large motors (above roughly 200 kW) a 3 kV / 6 kV / 10 kV high-voltage motor is the economic choice; smaller units run on 380 V.