IEC 62155:2003

FOREWORD
1 Scope and object
   1.1 General
   1.2 Hollow insulators or hollow insulator bodies intended
        for general use
   1.3 Ceramic hollow insulators intended for use with
        permanent gas pressure
2 Normative references
3 Terms and definitions
4 Insulating materials
5 General recommendations for design
   5.1 General recommendations for design of hollow insulators
        and hollow insulator bodies intended for general use
   5.2 Design rules for hollow insulators and hollow insulator
        bodies for use with permanent gas pressure
6 Classification of the tests, sampling rules and procedures
   6.1 Classification of the tests
   6.2 Relevant tests for type, sample and routine tests
   6.3 Hollow insulator or hollow insulator body selection
   6.4 Retest procedure for sample tests
   6.5 Quality assurance
7 General test procedures and requirements
   7.1 Verification of the dimensions and roughness of ground
        surfaces
   7.2 Mechanical failing load tests
   7.3 Temperature cycle test
   7.4 Porosity test
   7.5 Galvanizing test
8 Type tests
   8.1 Tests
   8.2 Pressure test
   8.3 Bending test
9 Sample tests
   9.1 Tests for hollow insulators or hollow insulator bodies
       intended for general use
   9.2 Tests for ceramic hollow insulators or hollow insulator
       bodies intended for use with permanent gas pressure
10 Routine tests
   10.1 Tests for hollow insulators or hollow insulator bodies
        intended for general use
   10.2 Tests for ceramic hollow insulators or hollow insulator
        bodies intended for use with permanent gas pressure
   10.3 Routine visual inspection
   10.4 Electrical routine test
   10.5 Routine mechanical tests for hollow insulators or
        hollow insulator bodies intended for general use
   10.6 Routine mechanical tests for ceramic hollow insulators
        or hollow insulator bodies intended for use with
        permanent gas pressure
   10.7 Routine thermal shock test
11 Documentation
   11.1 Marking
   11.2 Records
Annex A (informative) Methods of testing for tolerances of
                      parallelism, coaxiality, eccentricity,
                      angular deviation, camber and shed angle
                      of hollow insulators or hollow insulator
                      bodies
Annex B (informative) Methods for bending tests of hollow
                      insulator bodies
Annex C (informative) Alternative test method for the
                      temperature-cycle test
Annex D (informative) Bending moment equivalent to the design
                      pressure
Bibliography

Applicable to ceramic and glass hollow insulators intended for general use in electrical equipment and ceramic hollow insulators intended for use with a permanent gas pressure in switchgear and controlgear. These insulators are intended for indoor and outdoor use in electrical equipment, operating on alternating current with a rated voltage greater than 1 000 V and a frequency not greater than 100 Hz or for use in direct-current equipment with a rated voltage of greater than 1 500 V.