Energy-Saving Indoor Sf6 High Voltage Electric Switchboad, Ring Main Unit Switchgear for Power Grid, Railway, with IEC/TUV

Important FeaturesXGN55-27.5 GIS has independent intellectual property rights, owns two inventions, four practical new-type patents.XGN55-27.5 GIS designs refer to GB3906,TB/T2803 and EN standard etc, and has completed all type tests.Using SF6 gas insulated and vacuum interrupter technology and touching-type solid interface insulated voltage transformer and surge arrester. The design is modular with high degree of integration and miniaturization.The life of three position switch can be up to 10000 times.All high voltage components are sealed in a low pressure SF6 gas filled stainless steel cabinets with laser cutting and laser welding technology to ensure excellent are tightness.The switchgear has the advantage of high reliability, economical and practical, flexible combination, few maintenance.The switchgear is safe and can be used at different conditions of different altitudes, temperature, humidity, and pollution and condensation site.According to the special requirements of passenger dedicated line, the switchgear can be run 20 minutes at least when the current is up to 4000A.Technical Specification:XGN55-27.5 Gas Insulated Switchgear for Railway UseItemUnitDataRated VoltageKV1X27.5  2X27.5Maximum VoltageKV1X31.5  2X31.5Rated FrequencyHz50Rated Power Frequency Withstand VoltageTo EarthKV110Between Poles150Isolation Across120Lighting Impulse Withstand VoltageTo EarthKV250Between Poles225Isolation Across2755min Power Frequency Withstand Voltage (Zero In Voltmeter)To Earth 95Between Poles 140Isolation Across 118Rated CurrentA1250-3150Rated Short Time Withstand Current (4s)KA31.520 Min Maximum CurrentA4000Rated Peak Withstand Current KA80Insulated Gas Type SF6Leakage Rate/Year