9-12 D60 Line Distance Protection System GE Multilin9.2 PHASE DISTANCE APPLIED TO POWER TRANSFORMERS 9 THEORY OF OPERATION9Table 9–9: PHASE DISTANCE INPUT SIGNALS FOR DELTA-WYE TRANSFORMERSTRANSFORMERCONNECTIONLOOP CURRENTTRANSFORMATIONVOLTAGETRANSFORMATIONNone ABBCCADy1 ABBCCADy3 ABBCCADy5 ABBCCADy7 ABBCCADy9 ABBCCADy11 ABBCCAI A I B– V ABI B I C– V BCI C I A– V CA3I A 13------- V AB V CA– 3I B 13------- V BC V AB– 3I C 13------- V CA V BC– I AB_21P 3I C–= V AB_21P13------- V BC V CA– =I BC_21P 3I A–= V BC_21P13------- V CA V AB– =I CA_21P 3I B–= V CA_21P13------- V AB V BC– =I AB_21P 3I B–= V AB_21P13------- V BC V AB– =I BC_21P 3I C–= V BC_21P13------- V CA V BC– =I CA_21P 3I A–= V CA_21P13------- V AB V CA– =I AB_21P 3I A–= V AB_21P13------- V CA V AB– =I BC_21P 3I B–= V BC_21P13------- V AB V BC– =I CA_21P 3I C–= V CA_21P13------- V BC V CA– =I AB_21P 3I C–= V AB_21P13------- V CA V BC– =I BC_21P 3I A–= V BC_21P13------- V AB V CA– =I CA_21P 3I B–= V CA_21P13------- V BC V AB– =I AB_21P 3I B–= V AB_21P13------- V AB V BC– =I BC_21P 3I C–= V BC_21P13------- V BC V CA– =I CA_21P 3I A–= V CA_21P13------- V CA V AB– =
