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Phase converter stall

Jim Kobe

Aluminum
Joined
Nov 30, 2007
Location
Minnesota
Posted in gunsmithing forum

Default Phase converter problem
I recently replaced the phase converter to my Bridgeport. Burned that one out and replaced it and started getting phase growl so I replaced the capacitor within. Now I am getting that growl on startup. What am I doing wrong, I thought I purchased the correct one. It is an older 1hP motor, Anyone?
 
Ocasionaly when starting, it will just "growl" and not spin. I will have to shut it down and try a restart two or three times.
 
If it will not start a 3 phase motor, then the 3rd wire (generated leg) is not getting power into the motor.

No clue from that description whether there is a bad connection, a bad motor, a problem in the RPC, or what. You can check with a multimeter to see whether the motor is properly connected (ohmmeter with power disconnected) and whether voltage is getting to the motor (voltmeter, or clamp-on ammeter with power on).
 








 
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