Operating range of the general provisions of the isolation switch disconnectors allowable operating range pull-in voltage transformers and surge arresters 1. normal. 2. Pull together 220kV bus load. 3. pull together the transformer neutral is not grounded grid failure. 4. Pull together via a switch or bypass current disconnectors closed. 5. Jog outdoor vertical triple isolation switch, pull-in voltage in 220kV and above the excitation current does not exceed the load transformer and capacitor current does not exceed 2A 5A of load lines. 6.10kV outdoor triple isolation switch pull together no more than 15A of load current. 7.10kV isolation switch pull together does not exceed 70A balanced current loop. Outdoor disconnectors, outdoor installation should be mounted horizontally, so that support porcelain vase with rain skirt can indeed play a role; indoor isolating switch when mounted vertically, the static contact at the top, with a casing may be inclined at an angle to the installation. Under normal circumstances, Cangzhou pressure isolation switch, then the power static contact, moving contact connected to the load, but installed by the electrical cabinet isolation switch disconnectors, when using the cable entry, the power in the moving contact side Hengshui high voltage isolation switch This access method called "poured fire." On both sides of the busbar disconnectors and cables should be firmly attached, in case of copper, aluminum conductor contact, copper and aluminum transition joints should be used to prevent galvanic corrosion. Shijiazhuang high-voltage isolation switch, Huayi Electric Power (certified), isolating switch is provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) is a leader in Xi'an, high voltage circuit breakers, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Huayi power in leadership with the staff warmly welcome all inquiries negotiations to create electricity Huayi a better future.