WEG W21 three‑phase induction motor, B35T (foot‑mounted + FF flange, terminal box on top), IC411 TEFC Totally Enclosed Fan‑CooledWEG
Model Code Explanation
| Code |
Description |
| W21 |
WEG W21 series three‑phase induction motor |
| 22KW |
Rated power: 22 kW |
| 4P |
4‑pole |
| 180L |
Frame size 180L |
| 380V‑50Hz |
380V/50Hz, delta connection; compatible with 380‑415V Delta / 660‑690V Star |
| IE3 |
Super‑premium efficiency per IEC60034‑30‑1 |
| B35T |
B3 foot‑mounted plus B5 flange mounting; T = terminal box mounted on top of motorWEG |
Electrical Data (50 Hz)
- Rated Power: 22 kW
- Poles: 4‑pole; Synchronous speed: 1500 rpm; Rated speed: 1475 rpm
- Rated Voltage: 380‑415V (Delta) / 660‑690V (Star)
- Rated Current (380V Delta): 42.5 A
- Rated Torque: 142 N·m
- Power Factor cosφ: 0.85 (full load)
- IE3 Efficiency: ≥93.6% at full load, approx. 93.9% at 75% load
- Locked‑rotor current ratio LRC: 7.0 × In
- Starting Torque: 240% Tn; Maximum Torque: 260% Tn
- Duty Cycle: S1 Continuous running
- Insulation Class: Class F (temperature rise assessed per Class B, 80K)
Mechanical & Environmental Data
- Protection Class: IP55WEG
- Cooling Method: IC411 TEFC Totally Enclosed Fan‑Cooled
- Mounting Arrangement: B35T (foot‑mounted + FF flange, terminal box on top)WEG
- Frame size: 180L
- Shaft Extension: Φ48 mm, key 14×9, shaft extension length 110 mm
- Moment of Inertia J: 0.148 kg·m²
- Bearings: DE 6310C3; NDE 6310C3
- Weight: approx. 245 kg
- Ambient Temperature: ‑20℃ ~ +40℃, altitude ≤1000 m
- Standard supply: 1 set PTC thermistors per phase for winding protection (frame 180)
- Terminal box: Top entry, rotatable, suitable for VFD operation
IEC 180L‑4P B35 Mounting Dimensions
- Centre height H: 180 mm
- Foot mounting hole spacing A: 315 mm; B: 241 mm
- Foot width C: 152 mm
- Shaft diameter D: 48 mm, key 14×9
- Shaft extension E: 110 mm
- FF Flange: Flange OD 350 mm, spigot 250 mm, mounting holes M12