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BSI PD IEC/TR 63021:2016

BSI PD IEC/TR 63021:2016

$102.76

Rotating electrical machinery. Natural graphite brush for slip-ring in wound rotor-type induction motor. Application information

Published By Publication Date Number of Pages
BSI 2016 16
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This document presents technical characteristics, application results and practical information on NG-brush for slip-ring obtained through the application of NG-brush in various kinds of wound rotor-type induction motor (large-size water pump, belt conveyer, lift, winder motor, grinding mill and crusher in coal or ore mine; crane, rolling mill, compressor and winder motor for boring in oil or gas facility).

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
5 FOREWORD
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms and definitions
9 4 General remarks
5 General conditions of brush and slip-ring for stability in the operation of a wound rotor-type induction motor
5.1 Fire-spark
5.2 Life
Tables
Table 1 – Typical kinds of brushes
10 5.3 Temperature
5.4 Dust diffusion
5.5 Noise
6 Operating characteristics of natural graphite brush for slip-ring in a wound rotor-type induction motor
6.1 Current density
6.2 Vibration absorbing ability
6.3 Temperature
Table 2 – NG-brush’s bulk density, electric resistivity and current density compared with the copper brush
Table 3 – Comparison of properties for the assessment of vibration absorbing ability
11 6.4 Brush’s pressure
7 Testing method
8 Application result
8.1 Fire-spark
8.2 Wear and life of brush
8.3 Life of slip-ring
8.4 Environmental pollution
Table 4 – Wear and life of brush
Table 5 – Comparison of wear of NG-brush and copper brush
12 8.5 Economic profit
13 Annex A (informative) Data from practical application
Table A.1 – Data from practical application
14 Bibliography

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BSI PD IEC/TR 63021:2016
$102.76