Table of Contents

1 Scope
2 Normative references
3 Definitions, acronyms, and abbreviations
  3.1 Definitions
  3.2 Acronyms and abbreviations
4 General considerations
  4.1 Overvoltages
  4.2 Metal-oxide arresters
  4.3 Protective levels
  4.4 Insulation withstand
  4.5 Separation effects
  4.6 Insulation coordination
5 Protection of transmission equipment and substations
  5.1 Introduction
  5.2 Transformer protection, step-by-step procedures
  5.3 Special considerations for protection of transformers
  5.4 Protection of dry-type insulation
  5.5 Special considerations for shunt capacitor bank
      applications
  5.6 Protection of underground transmission cables
  5.7 Protection of gas-insulated substations (GIS)
  5.8 Protection of high-power static devices and systems
  5.9 Protection of series capacitor banks
  5.10 Protection of circuit breakers
6 Protection of distribution systems
  6.1 Introduction
  6.2 General procedure
  6.3 Selection of arrester ratings
  6.4 Distribution system overvoltages
  6.5 Insulation coordination
  6.6 Arrester connections
  6.7 Special applications
  6.8 Isolation
7 Protection of overhead lines
  7.1 General considerations
  7.2 Transmission-line protection
  7.3 Distribution line protection
8 Protection of electrical machines, 1000 V and greater
  8.1 Insulation withstand tests
  8.2 Methods of surge protection for motors started
      across the line (full voltage start)
Annex A (informative) - Lightning flashes, lightning stroke
        currents, traveling waves, and station shielding
Annex B (informative) - COG for various conditions
Annex C (informative) - Calculations of surge arrester
        separation distances
Annex D (informative) - Distribution system overvoltage
        line diagrams
Annex E (informative) - Dual transformer station
Annex F (informative) - Modeling of gapless metal-oxide
        surge arresters
Annex G (informative) - "Rules of thumb" for some common
        arrester energy discharge cases
Annex H (informative) - Bibliography

Abstract

Covers the application of metal-oxide surge arresters to safeguard electric power equipment against the hazards of abnormally high voltage surges of various origins. Does not cover the application of low-voltage surge protective devices below 1000 V alternating current (ac), except when applied to the secondary of a transformer.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN
Supersedes	IEEE DRAFT C62.22 : D8 2005