Intro:KYN61-40.5(Z) type atratingcurrent metal-clad and metal-enclosed withdrawable switchgear (hereinafter referred to as switchgear) is a indoor complete set of power dstribution unit ofhree-phase AC50Hz and rated voltage of40.5kV Used for reiving and distributing the electric energy in power plants, transformer substations,mining and industrial enterprises, etc., it controls, protects and dects the circuits, also is applicable to frequent operation locations. This switehgear complies with G112-1999, GB3906-1991, DL404-1997,etc.