12kV Ring Main Unit
XD Baoji Electric Co.,Ltd is one of the leading China 12kv ring main unit manufacturers and suppliers,Website:, as a professional company, our factory is able to produce quality 12kV RMU, 12kv ring main unit products at competitive price.Product Description XGN86-12 series Gas Filling RMU is three-phase A.C 50/60HZ indoor complete distributing equipment with the voltage range 12KV. It is used for secondary power distribution system, such as plant, building, urban rail transit and metro to receive and distribute power. The structure of this RMU is metal enclosed, cubical fixed, the gas-filled compartment of the RMU is made of stainless steel by way of laser welding. It can be equipped with load switch, load switch-fuse combination electric equipment, disconnector and circuit breaker. The wrong operation can be avoided due to its function of the ‘FIVE PROVENTION’. It can meet the standard requirments of IEC62271-200、IEC62271-103、IEC62271-105、IEC62271-1、GB3906、GB/T11022、GB3804、 GB16926 etc. Overall dimension (W×D×H mm)： 350×840×1650（load switch unit, load switch-fuse combination unit）. 440×840×1650（circuit breaker unit）. 500×840×1650（PT unit）.Features of Product Altitude above sea level 2000m and below. Current rating up to 630 A/20kA. Internal arc classified (IAC)：AFLR，20kA/0.5s. Equipped with load switch, load switch-fuse combination electric equipment, disconnector and circuit breaker. The internal barriers are made up of steel plate, and the loss of service continuity category (LSC) can meet the requirments of LSC2B. The e gas-filled compartment is made of stainless steel sheet by way of laser welding, test by the helium leak detection, with good seal. Plug-in solid insulation busbar coupler between the cabinets, with simple in switchgear installation and expansion.Internal or external cone cable plug with simple and fast installation. On line monitoring of gas density function. Technical ParametersItemUnit Dataload switch unitload switch-fuse combination unitcircuit breaker unitRated voltagekV12Rated current A630125630Rated frequencyHz50Rated short circuit breaking current kA /31.520Rated transfer currentkA/1700/Rated Short-time withstand currentMain circuitkA/4s20/20Earthing switchkA/2s20/20Earthing connect circuitkA/2s17.4/17.4Rated peak withstand currentMain circuitkA50/50Earthing switchkA50/50Earthing connect circuitkA43.5/43.5Degree of protectionEnclosureIP4XGas-filled compartmentIP67Rated insulation levelRated power-frequency withstand voltagekV/1min42Rated lightning impulse withstand voltagekV75IACFault currentkA20Durations0.5SF6 gas rated pressure (rel-20℃)MPa0.04SF6 gas alarm pressure (rel-20℃)MPa0.02
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