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Home / Technical Articles / Nine topologies of medium voltage ring-main systems you should know about

MV ring-main systems

Power systems are constructed can be operated as radial systems, ring-main systems or meshed systems. This technical article deals with nine most common topologies of ring-main systems, their characteristics and applications. Ring-main systems are common in the medium voltage range.

Nine topologies of medium voltage ring-main systems you should know about
Nine topologies of medium voltage ring-main systems you should know about

A large variety of ring-main systems are in operation with respect to permissible loading of the lines, reserve capability against outages, different arrangement of the feeding station and supply reliability.

Let’s discuss about characteristics of nine main topologies ring-main systems:

  1. Ring-Main System – Simple Topology
  2. Ring-Main System with Remote Station (Without Supply)
  3. Ring-Main System with Reserve Line
  4. Ring-Main System with Feeding Remote Station
  5. Ring-Main System as Tuple System
  6. Ring-Main System with Cross-Link
  7. Ring-Main System with Base Station
  8. Special-Spare Cable System
  9. Double-T Connection

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Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.

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