D
An imbalanced load on a transformer secondary in star arrangement with star point earthed, if there is an imbalance in the secondary phase currents due to load, how will this show up in the delta primary currents at 11kV? What are the equations/rules of thumb? We know a 'worst case' imbalance in the secondary and want to set imbalance protection on the 11kV feeder to the primary. I can't find any info on how this is calculated. It is a 2MVA transformer.
Any help much appreciated.
Any help much appreciated.