brian john
Senior Member
- Location
- Kilmarnock, Va
- Occupation
- Retired after 52 years in the trade.
Rather than rotation I would bet it is phasing.
3 phase generator rotation
- Thread starter JohnJ0906
- Start date
- Status
- Location
- Illinois
- Occupation
- retired electrician
Brian,
Can you expand on why a "phasing" issue would cause a problem for single phase loads. Note I am assuming that this is not a closed transition transfer switch, and even if it was I would not expect to find a problem at the loads...just at the switch if it is closed out of phase with both sources live.
Can you expand on why a "phasing" issue would cause a problem for single phase loads. Note I am assuming that this is not a closed transition transfer switch, and even if it was I would not expect to find a problem at the loads...just at the switch if it is closed out of phase with both sources live.
brian john
Senior Member
- Location
- Kilmarnock, Va
- Occupation
- Retired after 52 years in the trade.
Don with an open transfer it wouldn't, I let my fingers work faster than my brain, which is difficult cause typing is not my thing.
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
It might also be an issue to motors and some electronics if the phasing is mismatched during a rapid transfer. Maybe?don_resqcapt19 said:
- Location
- Illinois
- Occupation
- retired electrician
Larry,
I understand the issue with motors, especially larger ones with high inertia loads, but what causes a problem with electronic equipment?
I understand the issue with motors, especially larger ones with high inertia loads, but what causes a problem with electronic equipment?
hillbilly1
Senior Member
- Location
- North Georgia mountains
- Occupation
- Owner/electrical contractor
It was a open transition switch and the surge was happening during re-transfer to utility. I think you have the key words there "Close out of phase"don_resqcapt19 said:
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