11kv Sf6 Gas Insulated Ring Main Units- IEC298 Standard¹

Product Description ++++GeneralSM6624 unit type SF6 RMU with SF6 load switch as main switch, for whole cabinet is suitable for electric distribution automation and compact also expandable metal close switchgear. It characters in its simple structure, flexible operation, reliable interlocking and convenient installation etc., which can provide the satisfactory technical projects both for different application occasions and users. With the adoption of sensor technology and the protection relay up to date, plus the advanced technology and flexible assembly project, SM66-24 unit type SF6 RMU can completely meet the requirement of continuously variable market. It can take self-produced RLS-24 load break switch; also according to user's demand can be assembled with the internationally top-ranking RCB series vacuum circuit breaker with permanent magnetic mechanism made by AREVA or HD4 type SF6 circuit breaker made by AREVA or HD4 type SF6 circuit breaker made by ABB or with our VSC-24 type vacuum circuit breaker with permanent magnetic mechanism. Operational methods for the main switch inside ring main unit can be either manual or electric power driven. And It can meet the requirement of "Four Controls" when matched with FTU and RTU. ++++Main technical specificationsNoItemUnitParameter1Rated voltagekV242Rated frequencyHz50/603Rated currentA630/80041min Power frequency withstand voltagekV605Lightning impulse withstand voltagekV125/1506Rated short circuit breaking current (peak)kA637Rated active load/close circuit breaking currentA508Rated transferring currentA12009Rated short circuit making current (peak)kA6310Rated cable(line) charging breaking currentA50 and 1011Cable charge breaking current in earthing faultA2012Rated withstand current (peak)kA6313Short time withstand current (2s)kA2514Mechanism lifetimes2000   

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