NORD Drivesystems B1091-1 - Manual (Page 14)

Motors in fi operation for Category 3D – Planning guideline for B 1091
14 B 1091-1 GB-3213
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1.6.2 2. Example: motor 100L/4
Motor type plate information:
Nominal voltage 400/690 V
Nominal frequency: 50 Hz
Nominal power: 2.2 kW
Due to the different design of the windings only the 50 Hz characteristic curve can be used with
the frequency inverter.
This type of winding is typically used for gentle starting with star/delta circuits. The motor is started in
the star circuit (690 V / 50 Hz) and switched to the delta circuit (400 V / 50 Hz) in operation.
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