IEC 60773 : 1.0

Table of Contents

FOREWORD
PREFACE
SECTION ONE
Clause
1. Scope
2. Table of units, symbols and definitions
SECTION TWO
3. Measurement of contact drop voltage
4. Measurement of coefficient of friction
5. Measurement of brush wear
6. Specifications of test rigs
7. Test schedules and operating conditions
8. Current sources for test brushes
APPENDIX A - Determination of a formula for brush wear rate
APPENDIX B - Measurement of temperature of brushes, test
             rings and atmospheric humidity
APPENDIX C - The dynamometer as an alternative test machine
             for the measurement of the coefficient of friction
APPENDIX D - Discussion of probable accuracies and repeatability
             of such measurements

Abstract

Applies to test methods and apparatus for the measurement of the operational characteristics of brushes (contact drop voltage, coefficient of friction, brush wear) designed to operate on commutating and slip ring machines under specified test conditions. Does not apply to brushes for small power machines and automotive machines.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	SC 2F