I ran across a situation where a compressor was moved, and they wanted me to rerun the wires and rehook up the unit, What i found was that i had 219 volts on one phase coming in and 120 on the other, The unit calls for 230 volts single phase and is 7.5 h.p. Is there a problem with this high leg feeding this air compressor? Thank you so very much I have learned a great deal from this forum.
high leg
- Thread starter butch
- Start date
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tom ogryski
Member
- Location
- West_Virginia
Re: high leg
Butch,
Sounds like you measured both voltages to ground. If you'll measure them phase to phase, you should get something in the 240 volt range.
Tom
Butch,
Sounds like you measured both voltages to ground. If you'll measure them phase to phase, you should get something in the 240 volt range.
Tom
russ
Senior Member
- Location
- Burbank IL
Re: high leg
This is normal for 3 phase 240. the 240 motor doesn't care that one of the phases is higher to ground. The only important thing is that you get 240 between phases. If there were 110 volt controls tapped off the motor feed that could cause a problem , but with this install you don't have that.
[ January 11, 2004, 09:35 AM: Message edited by: russ ]
This is normal for 3 phase 240. the 240 motor doesn't care that one of the phases is higher to ground. The only important thing is that you get 240 between phases. If there were 110 volt controls tapped off the motor feed that could cause a problem , but with this install you don't have that.
[ January 11, 2004, 09:35 AM: Message edited by: russ ]
Re: high leg
Thanks again my fellow professionals the rreason I brought this up was that previously they have had some poblems with the windings on this unit. your help and support help me look more professional We all know 3 heads are better than one. Thanks so much !!!!!!!!!!!!!!!!!!!!!!!!! Anad may you have a wonderful new year.
Thanks again my fellow professionals the rreason I brought this up was that previously they have had some poblems with the windings on this unit. your help and support help me look more professional We all know 3 heads are better than one. Thanks so much !!!!!!!!!!!!!!!!!!!!!!!!! Anad may you have a wonderful new year.
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