SN EN 61921 : 2003

1 Scope
2 Normative references
3 Terms and definitions
4 Marking of capacitor bank
5 Guide for design, installation operation and safety
  5.1 General
  5.2 Choice of components
  5.3 Design
  5.4 Installation and operation
  5.5 Safety
6 Electromagnetic compatibility
  6.1 Emission
  6.2 Immunity
  6.3 Assemblies incorporating electronic equipment
7 Tests
  7.1 Classification of tests
  7.2 Type tests
  7.3 Routine tests
Annex A (normative) Minimum and maximum cross-sections of copper
        conductors suitable for connections
Annex B (normative) Method of calculating the cross sectional
        area of protective conductors with regard to thermal
        stresses due to currents of short-duration
Annex C (informative) Typical examples of assemblies
Annex D (informative) Formulae for capacitors and installations
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Applies to low voltage a.c. capacitor banks intended to be used for power factor correction purposes, equipped with a built-in switchgear and controlgear apparatus capable of connecting to or disconnecting from the mains part(s) of the bank with the aim to correct its power factor.