6. Distribution Switchgear

  1. Abdelhay A. Sallam and
  2. Om P. Malik

Published Online: 8 FEB 2011

DOI: 10.1002/9780470943854.ch6

Electric Distribution Systems

Electric Distribution Systems

How to Cite

Sallam, A. A. and Malik, O. P. (2011) Distribution Switchgear, in Electric Distribution Systems, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470943854.ch6

Publication History

  1. Published Online: 8 FEB 2011
  2. Published Print: 11 APR 2011

ISBN Information

Print ISBN: 9780470276822

Online ISBN: 9780470943854



  • distribution switchgear - electric components, as circuit breakers (CBs), load-break switches (LBSs), isolating switches, instrument transformers;
  • MV switchgear devices, electric equipments - disconnectors, LBSs, earthing switches, CBs, relays, fuses, current limiting devices and measuring instruments;
  • protection classes for LV and MV electric equipments - code, of two letters IP (International Protection) followed by two digits


This chapter contains sections titled:

  • Need for Switchgear

  • Switchgear Layout

  • Dimensioning of Switchgear Installations

  • Civil Construction Requirements

  • MV Switchgear Devices

  • LV Switchgear Devices

  • Protection Classes

  • Specifications and Implementation of Earthing

  • Safety and Security of Installations

  • Assessment of Switchgear

  • Steps for Installing Switchgear

  • Arc Flash Hazards