Brook Crompton IE3 75kW (100HP) three phase 4 pole B3 Foot mounting 250S 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: 75kW (100HP) x 1485rpm at 400V/690V 50Hz 3ph.
Speed Range from an Inverter Supply: 18:1 Range from 148rpm to 2673rpm for 5Hz to 90Hz, when de-rated at the lower speeds.
Constant Power Speed Range: 1485rpm 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 4000V 3ph: 131A.
Full Load Current with links in Y (Star) for 690V 3ph: 75.6A.
Torque: 482.3Nm at 50Hz.
Efficiency: 95% (IE3).
Power Factor: 0.87.
Terminal box cable entry: 2 x CM63 & 2 x CM20.
Terminal box position: Right Hand Side.
Enclosure rating: IP23.
Frame 250S Dimensions: 510mm wide x 930mm long x 600mm high overall.
Mounting: Foot mount on 19mm holes at 406mm wide x 311mm centres 168mm back from the shaft shoulder.
Shaft: 75mm diameter, 140mm long with 20mm wide key.
Construction: Cast Iron.
Weight: 490kg.
Ambient Temperature: Rated to 40°C.
Cooling: IC01.
Ventilation space is required at rear cooling air intake.
Part number: 250C002005.
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.