KYN61-40.5 metal armored shift-type closed switchgear, suitable for three-phase AC 50Hz, 50.5kV single bus section power system, mainly used as power plants, substation and industrial and mining enterprises, high-rise buildings in the transformer and distribution as the use of accepting and distributing electric energy, and the circuit control, protection and monitoring. Meet the requirements of IEC60298, GB3906, DL404 and other standards, and has a perfect "five defense" function.