How two-speed works:
We change how the motor’s wires are connected to create two different magnetic fields (“pole pairs”). This gives you two speeds from one motor.

Two simple designs to choose from:

1. Single Winding (Most Common)

   • Simple & Cost-Friendly

   • One set of wires inside the motor

   • Switch speeds by changing the wiring connection (Y or △)

   • Speed Ratio: Usually 2:1 (e.g., 2/4 poles, 4/8 poles)

2. Dual Independent Windings

   • Flexible & Optimized

   • Two separate sets of wires inside the motor

   • Each wire set is tuned for one specific speed

   • Switch speeds with a selector switch

   • Key Advantage: Both speeds work at their best—full power/torque/efficiency

   • Speed Ratio: Any combination (e.g., 4/6 poles, 6/8 poles)

Why Huifeng?
We make both types of two-speed motors. Tell us your needs, and we’ll deliver the right solution.