APVA-401 is a special instrument for testing characteristic of CT; The tester can finish CT transformation ratio test, CT polarity test, volt-ampere feature curve drawing and CT error drawing. It has large output, high precision, stable performance and automatic testing.

Funtion
1 CT transformation ratio test
2 CT polarity test
3 CT 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.