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  • Help in understanding RMU

    faian

    Member

    Updated: Oct 26, 2024
    Views: 1.1K
    Can someone who is working for distribution system tell me details and description regarding rmu (Ring main unit)
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  • vishnu priya

    Member • Jun 8, 2010

    "Distribution networks are normally formed by interconnecting a number of ring shaped grids. Distribution transformers are then connected to the system by T-offs. Instead of specifying and selecting individual components required for a T-off, the required components are frequently available in an integrated package known as a ring-main unit (RMU).

    Ring-main units normally consist of switches on both sides of the T-off, one to open the ring and another at the connection to the distribution transformer using one of the following:

    - Switch and a fuse separately
    - Switch-fuse combination"
    Further information:
    <a href="https://en.wikipedia.org/wiki/Ring_circuit" target="_blank" rel="nofollow noopener noreferrer">Ring Circuit</a>


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  • highvoltpower

    Member • Jun 22, 2016

    Ring main unit in electrical power distribution is a standard piece of switchgear comprising of switches for switching power cable rings of switches in series with fuses for the protection of distribution transformers. RMU is allow to install on medium voltage distribution network and mostly used work locally is main advantage particularly where limited panel space. It’s a fully automatic linking system. An Operation is only possible in case door is totally closed. for further info related to RMU please visit
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