I have a 480V 200hp motor with a FLA of 230A. The motor is being overloaded and keeps tripping. The overloads that are presently on there are Furnal E44 overloads rated for FLA between 230-248A. We keep tripping these overloads and damaging motor.
I notice the NEC recommends using 125% of FLA for motors rated at 1.15 SF or 40deg ambient which this motor is. Based on this the new overload setting would be 287A. Do you recommended getting the overload size range that corrosponds with this value? Maybe a size or two up?
I have a feeling that although this motor is tripping, people keep reseting it and restarting it with the starting making things worse.
I notice the NEC recommends using 125% of FLA for motors rated at 1.15 SF or 40deg ambient which this motor is. Based on this the new overload setting would be 287A. Do you recommended getting the overload size range that corrosponds with this value? Maybe a size or two up?
I have a feeling that although this motor is tripping, people keep reseting it and restarting it with the starting making things worse.