Content routine inspections, mainly to observe the relevant meter vacuum pressure isolation switch isolation switch, its operating current should be within the normal range; followed the structure of the isolation switch, check the conductive part of good contact, no overheating discoloration, insulation should be intact isolated part switch, and no flashover traces of discharge; then transmission parts should be no exception (no distortion, pin off, etc.). Porcelain fracture failure. In 2005, Xuzhou power grid twice porcelain fracture failure, once the operation is running, once the wiring in the construction process, the breaks are glued in place porcelain and flanges. Porcelain fracture both product quality-related Xi'an isolation switch, but also with the overall quality and method of operation related to the isolation switch. Control may result in improper porcelain porcelain pieces cooked, dense uneven and cement loading problem of the poor in the firing process, combined with strict quality control measures, resulting in poor quality of individual vases are assembled product, put into operation on pose a great threat. The operator at the time of division and isolation switch operating improper methods, excessive force are likely to cause damage porcelain. In addition, in 2005 and 2004 also occurred knots 8 500kVSOPLT type knife support insulator cracking defects. Isolation switch, isolation switch, Xi'an by the Xi'an high Huayi power plant. Xian Huayi Electric Power Equipment Factory (www.xahy.com) strong, credible, in the Xi'an high-voltage circuit breakers and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi electricity into the brilliant and you work for a better future!