AC Induction MotorJiuzhou YY single-phase · IEC 71
YY712-4
0.37 kW 4-pole single-phase capacitor-run motor, 220 V 50 Hz, from a Foshan fan maker — common on fans, pumps and small machines.
Manufacturer datasheet: Jiuzhou Puhui Fan (Foshan) · YY712-4 ↗ (checked 2026-10-18)Maker profile & contacts →
Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: locked-rotor current ratio, rotor inertia, insulation class, IP rating.
How this motor is made
Full manufacturing overview: IEC Three-phase Induction Motor (frames 80–160, IE3) →- 1. Lamination stamping & stator core stacking
- 2. Rotor die-casting
- 3. Rotor shaft fitting & turning
- 4. Rotor balancing
- 5. Slot insulation
- 6. Coil winding & insertion
- 7. Connection, lacing & forming
- 8. Stator in-process test
- 9. Impregnation & curing
- 10. Frame & end-shield machining
- 11. Final assembly & painting
- 12. Routine & efficiency test
Export certification: Motor for high-voltage drives
- Rated power
- 370 W
- Rated torque
- 2.52 N·m
- Rated speed
- 1400 rpm
- Efficiency
- 62 % · —
Performance curves
Electromagnetic torque
Derived with the Kloss formula from rated slip and breakdown-torque ratio; the low-speed region may deviate from the catalogue locked-rotor torque (0.35×).
Full specifications
General
- Motor type
- AC Induction Motor
- Series
- Jiuzhou YY single-phase
- Frame / flange
- IEC 71
Rated Values
- Rated voltage
- 220 V
- Rated power
- 370 W
- Rated torque
- 2.52 N·m
- Rated speed
- 1,400 rpm
- Rated current
- 2.95 A
- Rated frequency
- 50 Hz
Performance
- Breakdown torque
- 4.29 N·m
- Synchronous speed
- 1,500 rpm
- Rated efficiency
- 62 %
- Power factor
- 0.92
- Locked-rotor torque ratio
- 0.35 ×
- Locked-rotor current ratio
- 3.3 ×
Electrical
Mechanical
- Rotor inertia
- 8,000 g·cm²
- Body length
- 247 mm
- Shaft diameter
- 14 mm
- Weight
- 10 kg
- Power density
- 37 W/kg
- Protection
- IP44