High Voltage Vacuum Insulated Switchgear

High Voltage Gas Insulated Vacuum Switchgear 400A 1140V For Underground Description: KBZ-500/1140 Mine explosion-proof switch intelligent vacuum feed for the coal mine, in AC 50HZ,voltage of 1140V or 600V, current up to 500A of the ungrounded three-phase grid with a voltage, overload , short circuit, leakage blocking, leakage protection, selective leakage. KBZ-630/1140(660)Z mine use flame-proof intelligent vacuum feed switches are suitable for underground mines containing