NATIONAL FOREWORD

This Indian Standard which is identical with IEC 60507:2013 ‘Artificial pollution test on high-voltage ceramic and glass insulators to be used on a.c. systems’ the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Electrical Insulators and Accessories Sectional Committee and approval of the Electrotechnical Division Council.

This standard was first issued in 1978 in order to disseminate the details of some basic test procedures so that more experience could be gained to indicate whether those tests were suitable for inclusion as type tests in future Indian Standards on insulators. First revision was done in 1995. This revision of this standard has been taken up in order to update the test procedures for pollution tests applicable to insulators for overhead power lines, sub-stations, traction lines and to HT bushings for electrical equipment.

The text of IEC standard has been approved as suitable for publication as an Indian Standard without deviations.

Certain conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’;

b) Comma (,) has been used as a decimal marker, while in Indian Standards the current practice is to use a point (.) as the decimal marker.