May I kindly ask if anyone can provide me a book or technical chart on what Primary Resistor must I used for every Wye-Delta Starting Magnetic Starter? based on 220 volts & 440 volts.
Also what is the advantage & disadvatange of using a Primary resistor & a 3 contactor type Wye -Delta Connected Magnetic Contactor?
Please furnish me all the details. Thank you very much!