HXGN -40.5 /630-2050-31.5 Indoor HV SF6 Switchgear(here in after shorted as RMU??s a 50Hz AC three-phase indoor HV power distribution equipment. It is a combination electrical apparatus with hold switch and ground connection switch and the bus of his return circuit seal up in the metal case aspect, adopting spring conduce motive construct, with SF6 gas regards to arc and insulation dielectric. It is suitable in40.5kV ring supply of power supply circuit or double radiation power feed promptly when the circuit breaks down ,having raised the reliability and utilization ratio.