Premium Membership

Learn about power engineering and HV/MV/LV substations. Study specialized technical articles, papers, and electrical engineering video courses.

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.

Medium Voltage Ring Main Systems In a Nutshell
Medium Voltage Ring Main Systems In a Nutshell (on photo: Siemens MV ring main unit type 8DJH; Credit:

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

PREMIUM Membership Required

This technical article/guide requires a Premium Membership. Get access to all premium HV/MV/LV technical articles, electrical engineering guides, and papers. Check out each plan’s benefits and choose the membership plan that works best for you or your organization.

You can choose an annually based Plus, Pro, or Enterprise membership plan.

Log InSign Up

Premium Membership

Get access to premium HV/MV/LV technical articles, electrical engineering guides, research studies and much more! It helps you to shape up your technical skills in your everyday life as an electrical engineer.
More Information

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.

Leave a Comment

Tell us what you're thinking... we care about your opinion!

EEP Academy Video Courses

The learning platform for LV/MV/HV electrical engineers. Learn from experienced engineers and sharpen up your knowledge.