Fan and Blower Drives

Squirrel cage motors, which are fed by frequency converters, are used more frequently for heavy starting in fan or blower drives. This starting method allows for the reduction of the motor’s starting current and leads to energy conservation, even in the case of speed control in the operation. The fan’s frequent high mass moments of inertia should be taken into account. In the case of extremely high torques, our slip ring motors are used.

Type RH 400 S4
Number of units1
Machine type motor / asynchronous
Degree of protection IP 55
Cooling system IC 411
Rated speed [rpm] 1,485
Rated power [kW] 315
Rated voltage [V] 690
Rated frequency [Hz] 50
Shaft height [mm] 400
Mounting IM B3
Rotor typesquirrel-cage rotor
Applicationfan drive for a Foster Wheeler Energia Oy Group power plant
Type UH 710 M8
Number of units1
Machine type motor / asynchronous
Degree of protection IP 55
Cooling system IC 0151
Rated speed [rpm] 744
Rated power [kW] 1,000
Rated voltage [V] 660
Rated frequency [Hz] 50
Shaft height [mm] 710
Mounting IM V2
Rotor typesquirrel-cage rotor
Applicationfan drive
Type US 710 S6
Number of units1
Machine type motor / asynchronous
Degree of protection IP 55
Cooling system IC 0151
Rated speed [rpm] 991
Rated power [kW] 800
Rated voltage [V] 6,000
Rated frequency [Hz] 50
Shaft height [mm] 710
Mounting IM B3
Rotor typeslip ring rotor
Applicationfan drive in But Son cement plant, Vietnam
Type WH 450 L12
Number of units1
Machine type motor / asynchronous
Degree of protection IP 55
Cooling system IC 71W
Rated speed [rpm] 592
Rated power [kW] 560
Rated voltage [V] 480
Rated frequency [Hz] 60
Shaft height [mm] 450
Mounting IM B35/2001
Rotor typesquirrel-cage rotor
Applicationfan drive for a wind tunnel (USA)

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