Characteristics of SF6 Ring Main Unit
In the early 1990s, ring main units were widely promoted and used in China. Since their application, the development history of ring main units can be divided into four stages: gas-insulated ring main units, pressurized gas ring main units, vacuum ring main units, and SF6 ring main units. So, what are the characteristics of the SF6 ring main units developed and produced by Qingchang Electric Power, which are currently the most widely used?
Fully sealed and fully insulated. The core components of the switch are not affected by the external environment, effectively preventing flooding and resisting dirt, which greatly enriches the application scenarios of SF6 ring main units, making them suitable even in extremely harsh environments.
Modular and expandable. It adopts an expansion module combination method, allowing up to 5 modules to be realized at the end of the same gas chamber, and others can be expanded through bus connections. The extended bus is also fully insulated, so it will not be affected by changes in climatic conditions, ensuring maintenance-free operation.
Reliable mechanical interlocking, clear and simple operation. The various mechanical interlocks are reliable and durable, and the simulated operation indicators are also marked on the panel of the cabinet, fully ensuring operational safety.
Multiple wiring schemes. According to different practical needs, the SF6 ring main unit adopts combination schemes such as load switches, load switch + fuse protection, or vacuum circuit breaker protection, which can meet the needs of various incoming and outgoing line circuits.
Truly maintenance-free. Due to the overall common box structure, key components are sealed within the same gas chamber, and the design life of the SF6 ring main unit is 30 years without maintenance.
Based on the above characteristics, the SF6 ring main unit can meet the requirements of the vast majority of projects and is suitable for different environmental conditions. Moreover, as many regions now have higher requirements for SF6 ring main units, in addition to traditional ring main unit solutions, Qingchang Electric Power has also launched high-standard/high-quality options to meet the performance requirements that exceed national standards in certain regions.
Beijing Qingchang Electric Power Technology Co., Ltd. - Expert in ring main unit manufacturing.
SF6 ring main unit, high voltage ring main unit, gas-insulated switchgear, ring main unit, gas-insulated switchgear
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