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What is the purpose of a motor choke, when the customer is supposed to use it?

Motor chokes allow operations with cable length longer than the stander cable length in order to :
- Limit the dv/dt .

Motor choke is also used for:
- Limit overvoltage of the motor terminal
- Filter interference caused by opening of a contactor placed between the  filter and the motor
- Reduce the motor earth leakage current.
 

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