New Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 31/Sec 1) which is identical with IEC 62059-31-1: 2008 ‘Electricity metering equipment - Dependability – Part 31-1: Accelerated reliability testing - Elevated temperature and humidity’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on the recommendation of the Equipment for Electrical Energy Measurement and Load Control Sectional Committee and approval of the Electrotechnical Division Council.

The text of the 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.