1.1 Introduction APVA-402 is a special instrument for testing characteristic of CT and PT .The tester can finish CT/PT transformation ratio test, CT/PT polarity test, volt-ampere feature curve drawing and CT error drawing. It has large output, high precision,stable performance and automatic testing. 1.2 Funtion 1 CT/PT transformation ratio test 2 CT /PT polarity test 3 CT /PT volt-ampere feature curve measurement 4 CT ratio error measurement 5 Error curve measurement 6 Result print 7 Unload data to PC 8 PC online test . Wooden case.
