NF EN 61129 : 94 AMD 1 1995

Cooperating organizations
National foreword
Foreword
1 General
1.1 Scope and object
1.2 Normative references
2 Normal and special service conditions
3 Definitions
3.106 Electromagnetically induced current
3.107 Electrostatically induced current
4 Rating
4.108 Rated induced current
4.109 Rated induced voltage
5 Design and construction
5.9 Nameplates
6 Type tests
6.3 Temperature rise tests
6.105 Making and breaking tests
8 Guide to the selection of earthing switches
       suitable for making and breaking induced currents
       and voltages
8.101 General
9 Information to be given with enquiries, tenders
       and orders
9.101 Information to be given with enquiries, tenders
       and orders
9.102 Information to be given with tenders
Figures
Annexes
ZA Other international publications quoted in this
       standard with the references of the relevant
       European publications
ZB Special national conditions
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Establishes switching requirements for earthing switches used to earth transmission lines. Applies to alternating current earthing switches, rated 52 kV at least, capable of switching induced currents. Coverage includes definitions, rated induced current, rated induced voltage, temperature rise tests, making and breaking tests, and normal and special service conditions. Also gives detailed diagrams.