Never just trust and reset. Never ever trust a contact. I had a friend who was working at another factory that trusted a contact and reset it. When he did it blew up and shot a piece of metal into his forehead and the arc burned his outline into a panel door. Killed him instantly at 24 with 2 kids. Your first instinct should never be simply to reset something, it's tried for a reason and that reason is 100% of the time because something somewhere is dangerous
Hi I’m new to all this but I’m tryna teach myself and I’m currently in a situation so we have 2 3phase motors and 1 keeps shutting off on its own I’ve switched the contactor and the breaker from good motor to bad motor and motor still shutting off and the good motor continues to work without shutting off could this mean the motor is bad then? PLEASE HELP
I would check the motor current with a clamp meter. Should be the same on each leg. Check data play for your motor amps. Compare. Motors overloading happen for two basic reasons. Electrical and mechanical. If motor is working too hard due to bearings going out or something is jammed, or motor has a short to ground or phase to phase.
I have a locked rotor motor .75 hp 1.45amp that is making sn aweful sound when starting. Its on a motor starter combo. It sounds like it is struggling to start. The contactor is sparking a little. It tripped immediately. When I change the setting in the breaker in the motor starter to D , it holds but makes that weird sound. Everything is brand new. Any idea?
I would separate the motor from what it’s driving. That will separate the mechanical from electrical issues. If still doing I would use clamp meter to see if phase current is balanced. Is the new motor rated for high starting torque?
I think he mean infinity which means open circuit. You shouldn’t see any resistance on the meter when you doing the test. if you see resistance that means the either the power wire is shorted or the motor itself it’s shorted. To know if it’s the motor or the wire you can disconnect the wire on the motor side and do the ohms test again if on the meter showing you OL that means the wire is good the problem is inside the motor
