HP-SIS-12 Solid-Insulated Ring Main Unit

The HP-SIS-12 series is a fully-insulated, fully-enclosed, maintenance-free solid-insulated vacuum switchgear. All high-voltage live parts are cast in epoxy resin of excellent insulation performance, integrating the vacuum interrupter, main conductive circuit and insulating supports into one body; functional units are joined by fully-insulated solid busbars, so the whole assembly is immune to the external environment, ensuring reliability and operator safety.

With a simple structure, flexible operation, reliable interlocking and easy installation, it suits 50 Hz, 12 kV systems and is widely used in industrial and civil cable ring networks and distribution terminals for power reception and distribution. It is especially suited to urban residential distribution, small substations, switching stations, cable branch boxes, box-type substations, industrial sites, malls, airports, subways, wind farms, hospitals, stadiums, railways and tunnels; its full insulation, sealing and shielding make it ideal for harsh environments such as high altitude, high temperature, damp heat, severe cold and heavy pollution.