We have a 4160 V system that is low resistance grounded. The transformer supplying the 4.16 kV system is a 10 MVA, 13.8 kV Delta-Wye with a 12 Ohm neutral ground resistor. There is a temporary feeder being installed to supply some 480 V equipment along with a 4160-480 V transformer, however...
We have a sync motor that is tripping on power factor shortly after it starts. The motor comes up to speed and the trips on power factor after the delay expires. They were able to watch the PF on the relay display during the start event. The PF is initially at 0.3 lag, but then decreases to...
