General Data on Thomson Watthour Meters

In ordering direct current meters the following data is required : type and catalogue number, complete rating in amperes and volts (quoting norma l operating voltage), nature of circuit (whether two- or three-wire).

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Table of Contents:

COVER

REPLACING JEWELS AND PIVOTS

REGISTERS

GENERAL INSTRUCTIONS PERTAINING TO THE INSPECTION OF THOMSON WATTHOUR METERS PREVIOUS TO TEST

METHOD OF CONNECTING A TYPE I WATTHOUR METER AND INSTRUMENTS FOR TESTING PURPOSES

TESTING DIRECT CURRENT WATTHOUR METERS

DIMENSIONS OF TYPES C, C-6 AND C-7 THOMSON DIRECT CURRENT WATTHOUR METERS

INDEX