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MV Network Design

MV Network Design Book, prepared by Schneider Electric gives a great technical knowledge of MV network design and correct devices selection intended for medium voltage equipment and network designers.

MV Network Design Book With Exercises and Answers
MV Network Design Book With Exercises and Answers by Schneider Electric

This guide helps you to carry out the various calculations required to define and determine network characteristics, substation equipment dimensions and provides useful information enabling you to design your MV switchboard and other substation devices.

Exercise sections and answers //

  1. MV substation architectures
  2. MV substation architectures
  3. Industrial C13-200 MV substation
  4. Max. distance between surge arrester and MV equipment
  5. Calculation of MV cable cross-section
  6. Calculation of Isc
  7. CT s for MV metering
  8. CT s for MV protection
  9. Earth-fault relay settings
  10. Capacitors

Exercise 1 – MV substation architectures

To define //

  1. Type of LV or MV metering
  2. Architecture and choice of cubicles
  3. Type and rating of fuse that protects the transformer

Inputs //

  • Consumer substation on energy supplier loop: 20kV
  • 1 800kVA transformer with 20kV/400V secondary
  • Short-circuit power 250 MVA

Answers and chosen substation equipment //

  • 800 kVA with 20 kV = 23A < 45A
    OK for LV metering
  • 800 kVA with 410V = 1127A < 2000A
  • 800 kVA < 1250 kVA
  • MV Isc 20kV = 250MVA / 20kV / 1.732 = 7.2 kA rms
    OK for standard equipment 24 KV 12.5 kA
  • 800 kVA 20 kV transformer, UTE standard,
    43A Solefuse chosen fuse rating
Chosen MV substation architecture
Chosen MV substation architecture

Title:MV Network Design Answer and Exercise Book by Schneider Electric
Size:100 KB + 170 KB
Pages:31 + 37
Download 1:Right here
Download 2:Right here | Video Courses | Membership | Download Updates
MV Network Design - Answer and Exercise Book
MV Network Design – Answer and Exercise Book by Schneider Electric

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More Information


  1. Habia
    Dec 26, 2020

    it is necessary to insert in the diagram an inverter between the transformers and the generator

  2. Kishor Bordhan
    Apr 21, 2020

    It’s a very helpful information. Thank You!

    • Edvard
      Apr 21, 2020

      You’re welcome Kishor, I’m glad you find it useful.

  3. Michael
    Apr 14, 2019

    I think it’s a very helpful information

  4. Armando Medel Trujillo
    Dec 08, 2018

    Excelente práctica y aplicable información

  5. Muhammad Ismail Shaikh
    Sep 24, 2018

    Thanks, Right time right Article. Now I am working on big project there have 8 substation, I verified that design with the help of this Exercise .

  6. Enoka
    Sep 23, 2018

    Thanks it very useful

  7. Mahdi
    Sep 23, 2018

    Thanks, Really useful.

  8. julioabelotarolaluna
    Oct 10, 2017

    Me interesa este tipo de ejemplos sobre arquitectura de una sub-estacion MV, pues es muy ilustrativo.

  9. Felix
    May 27, 2017

    Valuable information! Thanks for sharing it!

  10. Zana
    Aug 29, 2016

    Very helpful information, thank you

  11. Jason
    May 02, 2016

    Where is the Design Guide? The only downloads I see are for the exercise book and the answer book, but not the actual guide.

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