The so-called three-phase four-wire system is how the matter? A: There are four generators qualifying, where three of the line of fire, DSE5110,1 root zero line. FireWire and FireWire voltage between 380V. Between the hot and neutral lines 220V. Three-phase short is how the matter? What will happen? A: Not through any load between the FireWire controller DSE5110, direct short circuit is a three-phase short circuit. Its terrible consequences, serious cause of the plane crash. Frequency volatility ≤0.5% voltage harmonic distortion <4% no-load voltage setting range of 95% to 105% of ≥90% efficiency generator set noise ≤102dBA (at 1m from the unit) with built-in vibration damping device and use anti-aging complex material, the unit can be placed directly room floor. The maximum amplitude <0.05cm relative humidity ≤95% Working temperature -10 ℃ ~ + 50 ℃ DSE5110_ Zhongxin Electrical and Mechanical Services (certified) _DSE5110 provided by the Dongguan City, South City Zhongxin Electrical and Mechanical operation. Dongguan Nancheng Zhongxin Electrical and operating (zhongxin888.net.cn) Dongguan, Guangdong, industrial products leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Zhongxin Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create a better future for electromechanical faithful.