... Features: 1) Intelligent equipment 2) Tests CT /PT voltage and current 3) Voltage-current characters tester the ... also can upload test data, save data or print by connecting USB interface and laptop. It is easy to ... .Complete-function: to test the volt-ampere characteristics of CT/PT, ratio, polarity, error curve of 5% ,10%, primary ... prepared, the optional accessories are no need. CT PT Analyzer