How to Safeguard a Three-Phase Motor from Short Circuits
The prevention of a three-phase motor from short circuiting involves the use of correctly rated circuit breakers, overload relays, and fuses; having the grounding resistance less than 4 ohms; installation of surge protectors; regular check-up of apparatus and ground; trip time within the range of 0.02 to 0.1 seconds to avoid overload and fault conditions. […]
