I came across a motor in the field the other day that had a 335V Delta rating listed on its nameplate. This is a European motor installed on our 480V 60Hz system. The motor has 6 taps that allows it to be connected in either wye or delta.
I cant seem to make sense of the 335V delta rating listed on nameplate? I thought maybe this was a rating for a 50Hz system (since european) however at 50Hz this would give a V/Hz ratio of 6.7 where as connected on a 480V system would have a V/Hz ratio of 7.6.
Has anyone ever seen this voltage rating on a motor and confirm if it should be wye or delta on a 480V 60Hz system?
I cant seem to make sense of the 335V delta rating listed on nameplate? I thought maybe this was a rating for a 50Hz system (since european) however at 50Hz this would give a V/Hz ratio of 6.7 where as connected on a 480V system would have a V/Hz ratio of 7.6.
Has anyone ever seen this voltage rating on a motor and confirm if it should be wye or delta on a 480V 60Hz system?
