* Pr. Voltage : 220 ~ 440V

* Se. Voltage : 110v

* Accuracy : 3.0%

* Burden : 15VA

* Dielectric strength : 3Kv 1min

* induction inner voltage

- 120 Hertz, double first input / resist 1 min

- 480 Hertz, double first input / resist 15 sec