The discussion was not the MALOPERATION due to INRUSH CURRENTS,but MALOPERATION due to errors in the OUTPUT OF CORE BALANCE CTS. I have not discussed earth fault protection using current measured in neutral of either Genertor or Transformer. In that case the time delay for inrush currents is taken care of by a DEFINITE TIME DELAY relay. In the case discussed by me an IDMT telay is used with the MINIMUM PICK UP SETTING is decided by the maximum possible error in CT ratios of the three individual CTs. ————————- N P NAIR,C Eng,MIET,FIE(I),SrMIEEE.