Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 5) (Fourth Revision) which is identical with IEC 60051-5 : 2017, ‘Direct acting indicating analogue electrical measuring instruments and their accessories - Part 5: Special requirements for phase meters, power factor meters and synchroscopes’ issued by the International Electrotechnical Commission (IEC) was adopted by the Bureau of Indian Standards on recommendation of the Measuring Equipment for Basic Electrical Quantities Sectional Committee and approval of the Electrotechnical Division Council.