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An extensible Ring Main Unit (RMU) is used in electrical distribution networks to enhance the reliability and flexibility of power supply. It allows for the connection of multiple feeders in a loop configuration, enabling power to be rerouted in case of faults and minimizing downtime. Additionally, its extensibility feature facilitates future expansions or modifications of the network without significant infrastructure changes. This makes RMUs ideal for urban areas and industrial applications where adaptability and continuous service are critical.

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