EN 61467:2008

1 Scope and object
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Characteristics of the test current
6 Supply and return circuit conditions
7 Tests on insulator sets
   7.1 General remarks
   7.2 Test arrangement
   7.3 Test current
   7.4 Supply and return circuit conditions
   7.5 Arc initiation
   7.6 Ambient conditions
   7.7 Test series and characteristics of the power arcs
8 Tests on short strings
   8.1 General remark
   8.2 Test arrangement
   8.3 Test current
   8.4 Supply and return circuit conditions
   8.5 Arc initiation
   8.6 Ambient conditions
   8.7 Test series and characteristics of the power arcs
9 Test report
10 Evaluation of results
   10.1 General remark
   10.2 Visual examination
   10.3 Porcelain or glass insulators
   10.4 Composite insulators
   10.5 Acceptance criteria
Annex A (normative) - Examples of test arrangements and
        practical methods of tower simulation (return
        circuit)
Annex B (normative) - Determination of the r.m.s. value
        of the current
Annex C (informative) - No-load voltage of the power source
Annex D (informative) - Power arcs on insulator sets and
        their true simulation by appropriate positioning
        of fusible wires
Annex E (informative) - Wind velocity during power arc tests
Annex F (informative) - Variation of the fault current magnitude
        and reasons for the choice of the prescribed test
        parameters
Annex G (informative) - Recommendations for the test report
Annex H (informative) - Sample of a power arc test report
Annex ZA (normative) - Normative references to international
         publications with their corresponding European
         publications
Bibliography

IEC 61467:2008 applies to insulator strings and sets comprising string insulator units of ceramic material, glass or composite material for use on a.c. overhead lines and traction lines with a nominal voltage above 1 000 V and a frequency between 15 Hz and 100 Hz. This standard also applies to insulator strings or sets of similar design used in substations. This standard establishes a standard test procedure for power arc tests on insulator sets. It also establishes a standard test procedure for power arc tests on short strings. This standard does not apply to insulator sets mounted on non-metallic poles or towers. This edition cancels and replaces IEC/TR 61467, which was published as a technical report in 1997. It constitutes a technical revision and now has the status of an International Standard.