1) Function: for detecting the voltage breakdown property and voltage resistance of winding wire insulation under room temperature. The instrument can cooperate with a thermal voltage tester to complete thermal voltage breakdown performance test and thermal voltage resistance performance test；

2) Comply with the latest IEC, GB, JIS and NEMA standards；

3) Breakdown current: 5 ± 0.5mA；

4) Maximum test voltage: 15KV（20KV/30KV can be customized）；

5) Voltage rising velocity: (20 ± 2) V/S, (100 ± 10) V/S, (500 ± 50) V/S；

6) Voltage indication error: less than 2.5%；

7) Both round and flat wire can be tested；

8) Optional settings range of withstand voltage time: 1s ~ 99 min 59s；

9) Starting with one key, 5 groups of samples can be tested in turn automatically；

10) Automatic storage test results to voltmeter, data can be querying.