... Sets are composed of seven items as below:-Instrument Transformer Tester, Model ITC-C,-Standard reference CT, Model HL-62CS- ... polarity fault and the ratio mistake. Technical Specifications: Instrument Transformer Tester, Model ITC-C -Input: Power Frequency: 50Hz±0.5Hz, Power ... 1 option) ² “X”,“Y”——Values Displayed ² “Dx, Dy”——Quantified Error Dx=2, Dy=5 -Working Range ² Current:(1%-149%)In (In =5A ...