Universal UMHC IE2 55kW (75HP) three phase 4 pole B3 Foot mounting 250M frame AC Induction Motor for 400V or 690V 3 phase supply. Suitable for use with a Variable Frequency Inverter Drive with 3ph output. Not permitted for use without an Inverter Drive.
Output: 55kW (75HP) x 1480rpm at 400V or 690V x 50Hz 3ph.
Speed Range from an Inverter Supply: 12:1 Range from 148rpm to 1776rpm for 5Hz to 60Hz, when de-rated at the lower speeds.
Constant Power Speed Range: 1480rpm to 1776rpm continuously.
Full Load Current with links in Δ (Delta) for 400V 3ph: 99A.
Full Load Current with links in Y (Star) for 690V 3ph: 57A.
Torque: 354.9Nm at 50Hz.
Efficiency: 93.5% (IE2) at 50Hz
Power Factor: 0.86 when mains connected at 50Hz.
Terminal box position: Top.
Enclosure rating: IP55.
Dimensions: 490mm wide x 920mm long x 615mm high overall.
Mounting: Foot mount on 24mm holes at 406mm wide x 349mm centres 168mm back from the shaft shoulder.
Shaft: 60mm diameter, 140mm long with 18mm key.
Construction: Cast Iron
Cooling: TEFC (Totally Enclosed Fan Cooled) IC411 – Fan runs the same speed as the output shaft.
Weight: 450kg.
Ambient Temperature: Rated to 40°C.
Ventilation space is required at rear cooling air intake.
Over-Temperature Detection: Fitted.
Bearings: Ball Bearing. Type: 6314 C3 (Drive End). 6314 C3 (NDE)
Part number: UMHC 250M-4 B3
Download the Dimensions and Technical Catalogue from the link below:-
From Jan 1st 2017, three phase electric induction motors with a rated output of 0.75kW to 375kW and efficiency less than IE3 must be equipped with a variable speed drive (Inverter Drive). For exceptions, see EC Commission Regulation 640/2009.