1.1 Introduction
Frequency Adjustable series resonance test unit are used to testing the insulation of electrical power object who has big capacity and high voltage in prophylactic test, such as power transformer, power generation unit, GIS, high-voltage cross-linked cables, mutual inductor, adapter pipe, etc. The test unit can be customized according to customer's needs.

1.2 Technical parameters
1.     Power supply: 380V±10%, three-phase 50HZ;
2.     Rated output voltage: 0~1000KV;
3.     Capacity: 0~6400KVA;
4.     Operating frequency range: 30~300HZ;
5.     Frequency Resolution: 0.1HZ;
6.     Output waveform: sine wave, waveform deviation factor : ≤1%;
7.     Environment condition: Temperature: -15℃~45℃ Humidity: ≤ 90%RH
8.     The test unit has automatic protection procedure for over voltage, over current and discharging.