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  • IEC 60383-1:1993

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    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

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Language(s):  English - French, English, French, Spanish, Castilian

    Published date:  26-04-1993

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    Section 1. General
    1 Scope and object
    2 Normative references
    3 Definitions
    Section 2. Insulators
    4 Classification, types of insulators and
        insulating materials
    5 Identification of insulators
    Section 3. Classification of tests, sampling rules
    and procedures
    6 Classification of tests
    7 Quality assurance
    8 Procedure for type and sample tests
    Section 4. Test procedures for electrical tests
    9 General requirements for high voltage tests
    10 Standard atmospheric conditions and correction
        factors for electrical tests
    11 Artificial rain parameters for wet tests
    12 Mounting arrangements for electrical tests
    13 Lightning impulse voltage tests (type tests)
    14 Wet power-frequency voltage tests (type test)
    15 Puncture withstand test (sample test, for class B
        insulators only)
    16 Routine electrical test (only on class B insulators
        of ceramic material or annealed glass)
    Section 5. Test procedures for mechanical and other
    tests
    17 Verification of the dimensions (type and sample test)
    18 Electromechanical failing load test (type and sample
        test)
    19 Mechanical failing load test (type and sample test)
    20 Thermal-mechanical performance test (type test)
    21 Verification of the axial, radial and angular
        displacements (sample test)
    22 Verification of the locking system (sample test)
    23 Temperature cycle test (sample test)
    24 Thermal shock test (sample test)
    25 Porosity test (sample test)
    26 Galvanizing test (sample test)
    27 Routine visual inspection
    28 Routine mechanical test
    Section 6. Pin insulators
    29 Mounting arrangements for tests on pin insulators
    Section 7. Line post insulators
    30 Coefficients for statistical analysis of the
        test results on line post insulators
    31 Mounting arrangements for tests on the line
        post indicators
    Section 8. String insulator units
    32 Prescriptions concerning type tests on string
        insulators
    33 Coefficients for statistical analysis of the test
        results on string insulators
    34 Mounting arrangements for electrical tests
        on string insulator units
    Section 9. Insulators for overhead electric traction
    lines
    35 Mounting arrangements for electrical tests on
        string insulator units
    Figures
    Annexes
    A Method of comparison of the results of
        electromechanical or mechanical type and sample tests
    B Illustration of the mechanical and electromechanical
        test acceptance procedure for string insulator
        units and line post insulators
    C List of normative documents given for information

    Abstract - (Show below) - (Hide below)

    Applies to insulators of ceramic material or glass for use on a.c. overhead power lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. Also applies to insulators for use on d.c. overhead electric traction lines and applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations.

    General Product Information - (Show below) - (Hide below)

    Committee TC 36
    Development Note Supersedes IEC 60383 (03/2001) Stability Date: 2019. (09/2017)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    PREN 50341-1 : DRAFT 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    BS 7803(1995) : 1995 GUIDE TO INSULATORS OF CERAMIC MATERIAL OR GLASS FOR OVERHEAD-LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V, PUNCTURE TESTING
    BS EN 60433 : 1999 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC INSULATORS WITH A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    UNE-EN 50124-1:2017 Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment
    CEI EN 61109 : 2009 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A/C/ SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    CEI EN 60437 : 1998 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    NF EN 61109 : 2009 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    14/30311824 DC : 0 BS EN 60433 - INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    DIN EN 60695-2-1-1 : 1997 PRUEFUNGEN ZUR BEURTEILUNG DER BRANDGEFAHR - PRUEFVERFAHREN - PRUEFUNGEN MIT DEM GLUEHDRAHT AM ENDERZEUGNIS UND ANLEITUNG
    CEI EN 61952 : 2009 INSULATORS FOR OVERHEAD LINES - COMPOSITE LINE POST INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    I.S. EN 60437:1999 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    12/30260570 DC : 0 BS EN 50341-1 - OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    02/206403 DC : DRAFT MAY 2002 IEC 62231. ED.1.0 - COMPOSITE STATION POST INSULATORS FOR SUBSTATIONS WITH A.C. VOLTAGES GREATER THAN 1000 V UPTO 245 KV - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    BS EN 60437 : 1998 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    BS EN 60143-2:2013 Series capacitors for power systems Protective equipment for series capacitor banks
    EN 60437 : 1997 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    BS EN 61109:2008 (published 2009-03) Insulators for overhead lines. Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1000 V. Definitions, test methods and acceptance criteria
    BS EN 60305 : 1996 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    IEC TS 62896:2015 Hybrid insulators for a.c. and d.c. for high-voltage applications - Definitions, test methods and acceptance criteria
    EN 50341-2-4 : 2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-4: NATIONAL NORMATIVE ASPECTS (NNA) FOR GERMANY (BASED ON EN 50341-1:2012)
    BS EN 50341-2-4 : 2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-4: NATIONAL NORMATIVE ASPECTS (NNA) FOR GERMANY (BASED ON EN 50341-1:2012)
    04/30108887 DC : 0 IEC 61467 ED.2 - INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - AC POWER ARC TESTS
    I.S. EN 50341-2-4:2016 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 2-4: NATIONAL NORMATIVE ASPECTS (NNA) FOR GERMANY (BASED ON EN 50341-1:2012)
    11/30245197 DC : 0 BS EN 60143-2 - SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENTS FOR SERIES CAPACITOR BANKS
    I.S. EN 60143-2:2013 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS (IEC 60143-2:2012 (EQV))
    11/30215604 DC : 0 BS IEC 60913 - RAILWAY APPLICATIONS - FIXED INSTALLATIONS - ELECTRIC TRACTION OVERHEAD CONTACT LINES
    04/30111295 DC : 0
    NF EN 61211 : 2005 INSULATORS OF CERAMIC MATERIAL OR GLASS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - IMPULSE PUNCTURE TESTING IN AIR
    BS IEC 61467 : 1997 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - AC POWER ARC TESTS ON INSULATOR SETS
    IEEE 1861 : 2014 GUIDE FOR ON-SITE ACCEPTANCE TESTS OF ELECTRICAL EQUIPMENT AND SYSTEM COMMISSIONING OF 1000 KV AC AND ABOVE
    BS 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
    PD IEC/TS 62896:2015 Hybrid insulators for a.c. and d.c. high-voltage applications. Definitions, test methods and acceptance criteria
    BS EN 50124-1:2017 RAILWAY APPLICATIONS - INSULATION COORDINATION - PART 1: BASIC REQUIREMENTS - CLEARANCES AND CREEPAGE DISTANCES FOR ALL ELECTRICAL AND ELECTRONIC EQUIPMENT
    CSA C411.1 : 2016 AC SUSPENSION INSULATORS
    CEI EN 60305 : 1997 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    14/30311815 DC : 0 BS EN 60305 - INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V CERAMIC OR GLASS INSULATOR UNITS FOR A A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    15/30298489 DC : 0 BS EN 50124-1 - RAILWAY APPLICATIONS - INSULATION COORDINATION - PART 1: BASIC REQUIREMENTS - CLEARANCES AND CREEPAGE DISTANCES FOR ALL ELECTRICAL AND ELECTRONIC EQUIPMENT
    BS EN 61952:2008 (published 2009-03) Insulators for overhead lines. Composite line post insulators for A.C. systems with a nominal voltage greater than 1000 V. Definitions, test methods and acceptance criteria
    BS EN 61211 : 2005 INSULATORS OF CERAMIC MATERIAL OR GLASS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - IMPULSE PUNCTURE TESTING IN AIR
    BS EN 61325 : 1996 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC OR GLASS INSULATOR UNITS FOR D.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    PREN 50124-1 : DRAFT 2015 RAILWAY APPLICATIONS - INSULATION COORDINATION - PART 1: BASIC REQUIREMENTS - CLEARANCES AND CREEPAGE DISTANCES FOR ALL ELECTRICAL AND ELECTRONIC EQUIPMENT
    NF EN 60437 : 2000 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    BS EN 60383-2 : 1995 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - INSULATOR STRINGS AND INSULATOR SETS FOR A.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    CSA C1325 : 1999 : R2016 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC OR GLASS INSULATOR UNITS FOR D.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    CSA C1325 : 1999 : R2011 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC OR GLASS INSULATOR UNITS FOR D.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    CEI EN 60143-2 : 2014 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS
    NBR 16458 : 2016 LINE TRAPS FOR A.C POWER SYSTEM
    CEI EN 61325 : 1998 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V CERAMIC OR GLASS INSULATOR UNITS FOR D.C. SYSTEMS DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    I.S. EN 61325:1997 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC OR GLASS INSULATOR UNITS FOR D.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    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
    I.S. EN 61952:2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE LINE POST INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    CEI EN 61467 : 2009 INSULATORS FOR OVERHEAD LINES - INSULATOR STRINGS AND SETS FOR LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - AC POWER ARC TESTS
    BS EN 50341-1 : 2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    EN 50124-1:2017 Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment
    CEI EN 60433 : 1999 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV CERAMIC INSULATORS FOR A.C. SYSTEMS CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    ANSI C29.11 : 2012 COMPOSITE SUSPENSION INSULATORS FOR OVERHEARD TRANSMISSION LINES - TESTS
    EN 60383-2 : 1995 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - INSULATOR STRINGS AND INSULATOR SETS FOR A.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    I.S. EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    CEI EN 50341-1 : 2013 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    NF EN 60433 : 2000 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    NF EN 61952 : 2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE LINE POST INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    EN 50341-1:2012 OVERHEAD ELECTRICAL LINES EXCEEDING AC 1 KV - PART 1: GENERAL REQUIREMENTS - COMMON SPECIFICATIONS
    I.S. EN 50124-1:2017 RAILWAY APPLICATIONS - INSULATION COORDINATION - PART 1: BASIC REQUIREMENTS - CLEARANCES AND CREEPAGE DISTANCES FOR ALL ELECTRICAL AND ELECTRONIC EQUIPMENT
    I.S. EN 61211:2005 INSULATORS OF CERAMIC MATERIAL OR GLASS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - IMPULSE PUNCTURE TESTING IN AIR
    EN 60305 : 1996 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    DIN 40680-1:1983-08 CERAMIC COMPONENTS FOR ELECTRICAL PURPOSES - ADMISSIBLE TOLERANCES
    I.S. EN 60305:1999 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    I.S. EN 60433:1998 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    I.S. EN 61109:2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    IEC 60305:1995 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1,000 V - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    IEC 60437:1997 RADIO INTERFERENCE TEST ON HIGH-VOLTAGE INSULATORS
    IEC 62497-1:2010+AMD1:2013 CSV Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electricaland electronic equipment
    IEC 61325:1995 Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria
    IEC 61952:2008 Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
    IEC 60433:1998 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    IEC 61211:2004 Insulators of ceramic material or glass for overhead lines with a nominal voltage greater than 1 000 V - Impulse puncture testing in air
    IEC 61109:2008 Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
    IEC 60143-2:2012 Series capacitors for power systems - Part 2: Protective equipment for series capacitor banks
    IEC 61467:2008 Insulators for overhead lines - Insulator strings and sets for lines with a nominal voltage greater than 1 000 V - AC power arc tests
    EN 60433 : 1998 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    EN 61952:2008 Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria
    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
    EN 61325 : 1995 Insulators for overhead lines with a nominal voltage above 1 kV - Ceramic or glass insulator units for d.c. systems - Definitions, test methods and acceptance criteria
    EN 60143-2:2013 SERIES CAPACITORS FOR POWER SYSTEMS - PART 2: PROTECTIVE EQUIPMENT FOR SERIES CAPACITOR BANKS (IEC 60143-2:2012)
    EN 61211 : 2005 INSULATORS OF CERAMIC MATERIAL OR GLASS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE GREATER THAN 1 000 V - IMPULSE PUNCTURE TESTING IN AIR
    EN 61109 : 2008 INSULATORS FOR OVERHEAD LINES - COMPOSITE SUSPENSION AND TENSION INSULATORS FOR A.C. SYSTEMS WITH A NOMINAL VOLTAGE GREATER THAN 1000 V - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
    VDE 0446-6 : 1996 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    DIN EN 60305 : 1996 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1 KV - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60305:1995 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1,000 V - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE CAP AND PIN TYPE
    IEC 60050-471:2007 International Electrotechnical Vocabulary (IEV) - Part 471: Insulators
    ISO 1463:2003 Metallic and oxide coatings Measurement of coating thickness Microscopical method
    ISO 1461:2009 Hot dip galvanized coatings on fabricated iron and steel articles — Specifications and test methods
    IEC 60720:1981 CHARACTERISTICS OF LINE POST INSULATORS
    ISO 1459:1973 Metallic coatings — Protection against corrosion by hot dip galvanizing — Guiding principles
    IEC 60372:1984 LOCKING DEVICES FOR BALL AND SOCKET COUPLINGS OF STRING INSULATOR UNITS: DIMENSIONS AND TESTS
    ISO 2178:2016 Non-magnetic coatings on magnetic substrates Measurement of coating thickness Magnetic method
    ISO 1460:1992 Metallic coatings Hot dip galvanized coatings on ferrous materials Gravimetric determination of the mass per unit area
    IEC 60433:1998 INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 1000 V - CERAMIC INSULATORS FOR A.C. SYSTEMS - CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
    IEC 60060-1:2010 High-voltage test techniques - Part 1: General definitions and test requirements
    IEC 60120:1984 Dimensions of ball and socket couplings of string insulator units
    ISO 2064:1996 Metallic and other inorganic coatings Definitions and conventions concerning the measurement of thickness
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