EN 60507:2014

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General test requirements
5 Salt fog method
6 Solid layer methods
Annex A (informative) - Supplementary information on the
        assessment of the requirement for the testing plant
Annex B (informative) - Determination of the withstand
        characteristics of insulators
Annex C (informative) - Measurement of layer conductivity for
        checking the uniformity of the layer
Annex D (informative) - Additional recommendations concerning
        the solid layer method procedures
Annex E (informative) - Supplementary information on artificial
        pollution tests on insulators for voltage systems of
        800 kV and above (solid layer method procedure B)
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their corresponding
         European publications

IEC 60507:2013 is applicable for the determination of the power frequency withstand characteristics of ceramic and glass insulators to be used outdoors and exposed to polluted atmospheres, on a.c. systems with the highest voltage of the system greater than 1 000 V. These tests are not directly applicable to polymeric insulators, to greased insulators or to special types of insulators (insulators with semiconducting glaze or covered with any organic insulating material). The object of this International Standard is to prescribe procedures for artificial pollution tests applicable to insulators for overhead lines, substations and traction lines and to bushings. It may also be applied to hollow insulators with suitable precautions to avoid internal flashover. In applying these procedures to apparatus incorporating hollow insulators, the relevant technical committees should consider their effect on any internal equipment and the special precautions which may be necessary. This edition includes the following significant technical changes with respect to the previous edition: a) Corrections and the addition of explanatory material; b) The addition of Clause 4.3.2 on atmospheric correction; c) The change of the upper limit of conductivity of water to 0.1 S/m; and d) The extension to UHV voltages.