Brook Crompton 10 Series IE3 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 having 3ph input and 3ph output.
Output: 55kW (75HP) x 1480rpm at 400V / 690V 50Hz 3ph.
Speed Range from an Inverter Supply: 18:1 Range from 148rpm to 2664rpm for 5Hz to 90Hz, when de-rated at the lower speeds.
Constant Power Speed Range: 1480rpm to 2664rpm continuously. The manufacturer recommends Silicon shaft seals and forced ventilation for applications at the higher end of this range.
Full Load Current with links in Δ (Delta) for 400V 3ph: 97.60A.
Full Load Current with links in Y (Star) for 690V 3ph: 56.6A.
Torque: 355Nm at 50Hz.
Efficiency: 94.6% (IE3)
Power Factor: 0.88 when mains connected at 50Hz.
Terminal box cable entry: 2 x CM63 & 1 x CM16.
Terminal box position: Top.
Enclosure rating: IP55.
Dimensions: 505mm wide x 1020mm long x 645mm high overall.
Mounting: Foot mount on 24mm holes at 406mm wide x 349mm centres 168mm back from the shaft shoulder.
Shaft: 65mm diameter, 140mm long with 18mm key.
Construction: Cast Iron.
Weight: 505kg.
Ambient Temperature: Rated to 40°C.
Ventilation space is required at rear cooling air intake.
Part number: PU-DF250MA 4P B3.
Download the 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.