... IEC60185 applied Test Sets Composed of:High Accuracy CT site Calibrating Test Sets are composed of ... :-Instrument Transformer Tester, Model ITC-C,-Standard reference CT, Model HL-62CS-Current load box ,model FY ... 3) -Working Load ² Current: TO to TX<0.12 ohm cosΦ=1.0 ² Voltage: a to x<0 ... -Harmonic control >40db -Polarity Check/ Indication Standard reference CT, Model HL-62CS -Rated load : 5VA,1VA PF= ...