I have three SR469's each feeding identical motors (250 HP, 575V). The current readings appear correct and visual inspection of the CT's appear correct (polarity & wiring - although wiring has not been confirmed by electrically tracing).
All three show current unbalance readings in the...
I am trying to calculate the ground fault current (do to the system capacitance) of a single phase to ground fault through a finite resistance ground fault connection on an ungrounded delta system.
Does anyone know the method? I believe I have the formula's for a simple solid ground fault but...
