YL90S-4
1.1 kW 4-pole single-phase dual-value capacitor motor, 220 V 50 Hz, from Foshan — higher starting torque than capacitor-run motors, for compressors, pumps and small machines.
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: which torque ratio the unlabeled column gives (read as starting torque), breakdown torque ratio, locked-rotor current ratio, rotor inertia, weight, length, shaft diameter, 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
- 1.1 kW
- Rated torque
- 7.5 N·m
- Rated speed
- 1400 rpm
- Efficiency
- 73 % · —
Performance curves
Derived with the Kloss formula from rated slip and breakdown-torque ratio; the low-speed region may deviate from the catalogue locked-rotor torque (1.7×).
Full specifications
General
- Motor type
- AC Induction Motor
- Series
- Tianyang YL dual-capacitor
- Frame / flange
- IEC 90S
Rated Values
- Rated voltage
- 220 V
- Rated power
- 1.1 kW
- Rated torque
- 7.5 N·m
- Rated speed
- 1,400 rpm
- Rated current
- 7.21 A
- Rated frequency
- 50 Hz
Performance
- Breakdown torque
- 13.5 N·m
- Synchronous speed
- 1,500 rpm
- Rated efficiency
- 73 %
- Power factor
- 0.95
- Locked-rotor torque ratio
- 1.7 ×
- Locked-rotor current ratio
- 5 ×
Electrical
Mechanical
- Rotor inertia
- 21 kg·cm²
- Body length
- 310 mm
- Shaft diameter
- 24 mm
- Weight
- 17 kg
- Power density
- 64.7 W/kg
- Protection
- IP44