Reaffirmed 2017

NATIONAL FOREWORD

This Indian Standard (Second Revision) which is identical with IEC 60112 : 2003 Method for the determination of the proof and the comparative tracking indices of solid insulating materials issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Solid Electrical Insulating Materials and Insulating Systems Sectional Committee and approval of the Electrotechnical Division Council.

This standard was originally published in 1964 and subsequently revised in 1975 with considerable assistance derived from I EC Publication 112 (1971). This second revision has been undertaken to harmonize this standard with latest edition of I EC 60112 : 2003.

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 in the Internationa.1 Standards, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.