Recently, Jiangxi users purchased some high-voltage test equipment for the preventive test of 220KV voltage level. This equipment includes: ZGS-300kV/5mA DC high voltage generator, ZZC-20A DC resistance tester, YDJ-10kVA/100KV power frequency withstand voltagetest device, DMG2671F digital megohmmeter, FD-III arrester discharge counter tester , FA-103 transformer volt-ampere characteristic tester, etc.
Huayi ZGS series DC high voltage generator adopts high frequency voltage doubler circuit, applies advanced PWM high frequency pulse width modulation technology, closed loop adjustment, and adopts large voltage feedback, which greatly improves the voltage stability. Use high-power IGBT devices and drive technology with superior performance, and adopt special shielding, isolation and grounding measures according to the electromagnetic compatibility theory. Mainly applicable to: 1. Electric conduction current test of valve arrester. 2. DC withstand voltage test and leakage current measurement of power transformers. 3. DC withstand voltage test and leakage current measurement of high voltage cables (35～500kV and below). 4. U1mA DC reference voltage test of zinc oxide arrester and leakage current test under 0.75U1mA.
