40.5kV Ring Main Unit
XD Baoji Electric Co.,Ltd is one of the leading China 40.5kv ring main unit manufacturers and suppliers,Website:, as a professional company, our factory is able to produce quality 40.5kV RMU, 40.5kv ring main unit products at competitive price. Product Description XGN86-40.5 series Gas Filling RMU is three-phase A.C 50Hz indoor complete distributing equipment with the voltage range 40.5kV. It is used for secondary power distribution system, such as plant, wind power plant (Inside the tower), 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)：450×950×1910.Features of Product Altitude above sea level 1000m 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 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. Design for wind power plant (Inside the tower), small size meet the requirments of the door of the tower.Technical ParametersItemUnitDataload switch unitload switch-fuse combination unitcircuit breaker unitRated voltagekV40.5Rated current A63040630Rated frequencyHz50Rated short circuit breaking current kA /31.520Rated transfer currentkA/1000/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/1min95Rated lightning impulse withstand voltagekV185IACFault currentkA20Durations0.5SF6 gas rated pressure (rel-20℃)MPa0.04SF6 gas alarm pressure (rel-20℃)MPa0.02
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