I am having a client. who would like to use soft starters to start his 22kW motors for machines. The thing is the 22kW motors terminals are connected with 3 x PFC capacitors to improve the PF of the motors (near motor terminals and not the the mains DB) and these capacitors connected directly to the motor terminals without any control magnetic contactor.
My problem is, I am not sure if I could use soft starters in this configuration as if I am not mistaken, the capacitors will act like short circuit at 0Hz, which I am afraid this may damage the soft starters since short circuit will draw huge current from the soft starter!?
Does anybody has experience in this type of configuration?
Please kindly advice!
Dunke!!!
