In view of the driving failure due to the cutting of driving key of the bevel gear and bevel gear shaft of the driving mechanism for 252 kV GIS disconnector in a power grid substation project

the flat key used in this fault position is GB1096A type 4×4×10 key. In order to analyze the cause further

the faulty level gear

driving shaft and the broken flat key are returned to the factory from site and are subject to materials and hardness inspection. The cause of the failure is found from the aspects of design and assembly analysis

the corresponding solution measures are formulated

the safety risks of such problems are eliminated

which lay a foundation for the subsequent production of this product

improve reliable operation of the power grid and reduce the operation accident rate of power grid.