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INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS

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Hardcopy , PDF

Language(s)

English

Published date

01-01-2008

Publisher

National Standards Authority of Ireland

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FOREWORD
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
Bibliography
Annex ZA (normative) - Normative references to international
                       publications with their corresponding
                       European publications

Applicable 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 1000 V and a frequency between 15 Hz and 100 Hz.

DevelopmentNote	For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
DocumentType	Standard
Pages	92
PublisherName	National Standards Authority of Ireland
Status	Current

Standards	Relationship
IEC 61467:2008	Identical
EN 61467:2008	Identical

IEC 60826:2017	Design criteria of overhead transmission lines
IEC 60050-471:2007	International Electrotechnical Vocabulary (IEV) - Part 471: Insulators
IEC 60383-1:1993	Insulators for overhead lines with a nominal voltage above 1000 V - Part 1: Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria
IEC TR 60797:1984	Residual strength of string insulator units of glass or ceramic material for overhead lines after mechanical damage of the dielectric
IEC 60383-2:1993	Insulators for overhead lines with a nominal voltage above 1000 V - Part 2: Insulator strings and insulator sets for a.c. systems - Definitions, test methods and acceptance criteria

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I.S. EN 61467:2008

INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS

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