Common fault isolation switch cited what? A: The common fault isolation switch are: (1) contact part overheating. (2) ceramic insulation damage and flashover discharge. (3) refusing to pull, closing. (4) the error pull closing. Welcome to inquire buy, thank you for your attention! It must be emphasized isolation switch wholesale, either opening or closing operations should not be carried out with a load or load isolation switch within the permissible operating range. For this reason, before operating the isolation switch, you must first check with a series of circuit breakers, Shaanxi disconnectors, should really be in the off position. Such as load isolation switch with the provisions of the transformer capacity range, you must first stopped all low voltage transformer load after load so that it then opened the isolation switch; when the power, check the transformer low voltage side of the main switch is really in off position before co-isolation switch. Isolation switch factory direct, Huayi Electric Power (certified), Guangzhou, Xi'an isolation switch provided by 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.