IEEE 43-2000
$67.17
IEEE Recommended Practice for Testing Insulation Resistance of Rotating Machinery
Published By | Publication Date | Number of Pages |
IEEE | 2000 |
Revision Standard – Superseded. This document describes the recommended procedure for measuring insulation resis-tance of armature and field windings in rotating machines rated 1 hp, 750 W or greater. It applies to synchronous machines, induction machines, dc machines, and synchronous condensers. Con-tained within this document is the general theory of insulation resistance (IR) and polarization index (P.I.), as well as factors affecting the results, test procedures, methods of interpretation, test limita-tions, and recommended minimum values.
PDF Catalog
PDF Pages | PDF Title |
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1 | Title Page |
3 | Introduction Participants |
5 | CONTENTS |
7 | 1. Overview 1.1 Scope 1.2 Purpose |
8 | 2. References |
9 | 3. Definitions 4. Safety considerations |
10 | 5. Insulation resistanceāgeneral theory 5.1 Components of the measured direct current |
12 | 5.2 Characteristics of the measured direct current 5.3 Insulation resistance readings |
13 | 5.4 Polarization index readings |
14 | 5.5 Discharge current 6. Factors affecting insulation resistance 6.1 Effect of surface condition |
15 | 6.2 Effect of moisture 6.3 Effect of temperature |
17 | 6.4 Effect of test voltage magnitude |
18 | 6.5 Effect of existing charge on winding resistance measurements 7. Conditions for measuring insulation resistance 8. Winding connections for insulation resistance tests |
19 | 9. Methods of measuring insulation resistance 9.1 Direct measurement 9.2 Calculated measurement 10. Precautions |
20 | 11. Interpretation of insulation resistance and polarization index 11.1 Monitoring insulation condition 11.2 Suitability for operaton or continued testing |
21 | 11.3 Limitations of the insulation resistance test 12. Recommended minimum value of polarization index and insulation resistance 12.1 Minimum values 12.2 Polarization index |
22 | 12.3 Insulation resistance |
24 | Annex AāVariants in polarization index |
25 | Annex BāDirect versus alternating voltage testing |
26 | Annex CāRegulation in power supplies used for insulation resistance measurement |