So ring the main unit is now widely used in residential buildings, public places, factory buildings and other buildings, especially in medium and small capacity compact stations. It can be used for long-term stable power supply and infrequent high voltage switching operation. The ring main unit is small in size and can adapt to all kinds of buildings. The ring main unit has the advantages of low price, low maintenance cost, good cost performance, good operation reliability, and can improve the power supply parameters. Orecco Ring main unit is simple in structure and small in volume and requires less application area. SF6 Gas isolation, air isolation, and solid isolation. There are mainly 3 types of ring main unit(rmu) classifications according to isolation medium in the market: The most important components inside of the ring main unit are the load breaker switch and fuse, which can provide fault protection for the loop network and improve the operational safety of power supply lines. The function of the ring main unit(rmu) is to connect the loop network and improve the reliability of the power supply, such as the loop operation of the loop network or the load cut of the ring network. The ring main unit(RMU) is an electrical device applied to the power supply unit of the secondary distribution system.
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