Motor chokes allow operation with motor cables which are longer than the standard lengths and/or limit the dv/dt at the motor terminals to:

• 500 V/us for 200…400 V and 380…480 V three-phase line supplies
• 1000 V/us for 500…690 V three-phase line supplies

They are also used to:

• Limit overvoltages at the motor terminals
• Filter interference caused by opening of a contactor placed between the filter and the motor
• Reduce the motor earth leakage current

Released for: Schneider Electric India