CrazyEngineers
CrazyEngineers

  • what is a ring main unit?

    khyzer shamsi

    khyzer shamsi

    @khyzer-shamsi-gsKeIj
    Updated: Jun 4, 2012
    Views: 1.2K
    Hello all, I am new to this forum. I am an electrical engineer and I want to know what is a ring main unit? I am unable to find an explanation in the books I am referring. Please help.
    0
    Replies
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.
Replies

  • Ankita Katdare

    Administrator • Jun 5, 2012

    #-Link-Snipped-# I googled it up and after a bit of reading found that a "ring main unit or RMU" is basically used for an uninterrupted power supply.
    It is a standard piece of switchgear in distribution systems comprising of switches for switching power cable rings and of switches in series with fuses for the protection of distribution transformers.

    Alongside, it also protects your secondary side transformer from the occasional transient currents.
    One can use a switch fuse combination or a circuit breaker to protect the transformer, depending on his/her applications and loading conditions.
    Are you sure? This action cannot be undone.
    Cancel

  • khyzer shamsi

    Member • Jun 5, 2012

    #-Link-Snipped-# i want to know about the same ring main unit as discussed by AbraKaDabra
    Are you sure? This action cannot be undone.
    Cancel

  • khyzer shamsi

    Member • Jun 5, 2012

    #-Link-Snipped-# i dnt think it is used for interrupted supply. Rest f the information i too got on google.
    Can u pls provide me the SLD of RMU and also the function of each component.
    Are you sure? This action cannot be undone.
    Cancel

  • aarthivg

    Member • Jun 6, 2012

    Ring main units are used in 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.

    Are you sure? This action cannot be undone.
    Cancel

  • 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. for further info related to rmu please visit
    Are you sure? This action cannot be undone.
    Cancel
Home Channels Search Login Register