A Ring Main Unit (RMU) is a type of switchgear used to control and distribute electricity in a power system. It is also known as a Ring Main Distribution Unit (RMDU). The primary purpose of the RMU is to protect the electrical network from overloading and to isolate faulty sections of the network to ensure an uninterrupted power supply.
Ring Main Unit (RMU) Components Functions Types and Applications - Ring Main Unit (RMU) is a switchgear device used in secondary distribution systems, i.e., between the distribution substation and the end consumer to ensure continuous power supply and isolate the faulty section from the network.
When it comes to delivering electricity to people, it's crucial that the process is efficient, dependable, and safe. That's why Ring Main Units (RMUs) have become essential in medium voltage distribution networks. They offer compact and adaptable ways to distribute power.
Selecting the right Ring Main Unit for your power distribution system is crucial to ensure reliable and efficient operations. Here are some factors to consider when selecting an RMU: Power rating: The power rating of the RMU should match the power requirements of your distribution system.
Indoor as well as outdoor types of Ring Main Units are available. Ring Main Unit comprises of one incomer feeder and one or more outgoing feeder. The incomer feeder is either Vacuum Circuit Breaker or SF6 Circuit Breaker with associated Disconnect Switch and Earth Switch.
When configuring a Ring Main Unit (RMU), some key parameters to consider are: The suitable voltage level to meet the requirements of the specific network. The maximum load that the RMU can handle without compromising performance. The ability of the RMU to withstand and interrupt fault currents.