The BM series consists of three-phase, asynchronous brake motors totally enclosed fan cooled. The BM series frame size ranges from 56 up to 160.
As standard the brake power supply is DC with a rectifier integrated in the terminal box. The rectifier is provided with an over-voltage and radio frequency emission protection device.
The cooling fan is fitted at non-drive shaft end.
BM series main features are:
- low braking noise
- gradual acceleration during the motor start and stop and the reduced overall dimensions
In Europe, the Commission Regulation 640/2009, adopted on 22 July 2009, specifies the requirements regarding the ecodesign of electric motors. In particular, the Regulation establishes the minimum efficiency classes the motors should have.
The application field of the EuP (Energy-using Products) Regulation includes low voltage three-phase squirrel cage-induction motors for 50Hz or 50/60Hz single speed with the following properties:
- Rated voltage up to 1.000 V
- Rated output between 0,75 kW and 375 kW
- Either 2, 4 or 6 poles
- Rated for continuous duty