Hi there,
I built myself a rotary phase converter for powering my workshop. I’m UK based, so the rotary converter runs off 240v Single phase live and neutral. I run L1 to U, Neutral to V, and caps to W. Once started I use a generator change over switch and it moves the neutral to the star point giving me 440v P-P. The start caps originally ran off the a momentary push button, but because I wanted to automate it I bought a potential relay, normally closed and then when the volts on the generated phase build up it opens the switch and brings them out of circuit. The circuit will work once, then when the converter is turned off, the relay will close as the volts drop and you can hear the caps discharge back into the windings and it almost slows the motor. Once it does this, the switch is welded shut and the potential relay won’t actuate with the magnet and it requires a screwdriver to break it free. Any ideas why this is happening?
Thanks
I built myself a rotary phase converter for powering my workshop. I’m UK based, so the rotary converter runs off 240v Single phase live and neutral. I run L1 to U, Neutral to V, and caps to W. Once started I use a generator change over switch and it moves the neutral to the star point giving me 440v P-P. The start caps originally ran off the a momentary push button, but because I wanted to automate it I bought a potential relay, normally closed and then when the volts on the generated phase build up it opens the switch and brings them out of circuit. The circuit will work once, then when the converter is turned off, the relay will close as the volts drop and you can hear the caps discharge back into the windings and it almost slows the motor. Once it does this, the switch is welded shut and the potential relay won’t actuate with the magnet and it requires a screwdriver to break it free. Any ideas why this is happening?
Thanks