Statistics and analysis of mechanical characteristic of circuit breaker data in GIS above 110 kV

The mechanical characteristic of GIS equipment can reflect the movement condition. It can find the possible defects in the driving mechanism and control circuit, reduce the accidents, improve the reliability by analyzing the mechanical characteristic data in service. The article finds the rule and reason of the change of the mechanical characteristic data by counting and analyzing some of the mechanical characteristic data and the mechanical defects of GIS. Then it finds the factors which influences the opening and closing time and the coil resistance and also finds the ways to improve the reliability of GIS. So the article can provide the basis for improving the reliability of GIS.