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BS EN IEC 60034-18-32:2022

BS EN IEC 60034-18-32:2022

$167.15

Rotating electrical machines – Functional evaluation of insulation systems (Type II). Electrical endurance qualification procedures for form-wound windings

Published By Publication Date Number of Pages
BSI 2022 36
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This part of IEC 60034-18 describes qualification procedures for the evaluation of electrical endurance of insulation systems for use in rotating electrical machines using form-wound windings. The test procedures are comparative in nature, such that the performance of a candidate insulation system is compared to that of a reference insulation system with proven service experience. If no reference system is available, the diagram in Annex A is available for use. The qualification procedures of inverter duty insulation system for form-wound windings can be found in IEC 60034-18-42 or IEC 60034-18-41.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
9 International standard (Bilingual)
10 English
CONTENTS
12 FOREWORD
14 INTRODUCTION
15 1 Scope
2 Normative references
16 3 Terms and definitions
17 4 General considerations
4.1 Relationship to IEC 60034-18-1
4.2 Selection and designation of test procedures
4.3 Reference insulation system
4.4 Test procedures
4.4.1 General
4.4.2 Electrical ageing of the mainwall insulation
18 4.4.3 Electrical ageing of the stress control system
4.4.4 Electrical ageing of the turn insulation
4.5 Extent of tests
4.5.1 Full evaluation of the mainwall insulation
4.5.2 Reduced evaluation of the mainwall insulation
4.5.3 Evaluation of the stress control system
5 Test objects
5.1 Construction of test objects
19 5.2 Number of test specimens
5.3 Initial quality control tests
6 Electrical ageing
6.1 General
6.2 Voltage levels and intended test lives of the mainwall insulation
6.3 Test temperatures during electrical endurance testing of the mainwall insulation
6.3.1 Electrical ageing at room temperature
20 6.3.2 Electrical ageing at elevated temperature
6.3.3 Ageing procedure for the mainwall insulation
6.4 Maintenance of stress control coatings
7 Diagnostic sub-cycle
7.1 General
7.2 Voltage test of the mainwall insulation
21 7.3 Other diagnostic tests
8 Failures of the mainwall insulation
8.1 Failure location and verification
8.2 Failed specimen observations
9 Functional evaluation of the mainwall data
9.1 General
9.2 Full evaluation (same voltage level and same expected service life)
22 Figures
Figure 1 – Comparison of ageing data from candidate (C) and reference (R) insulation systems showing qualification
23 9.3 Reduced evaluation (same voltage level and same expected service life)
Figure 2 – Comparison of ageing data from candidate and reference insulation systems showing failure to qualify
24 9.4 Recommended data to be recorded
Figure 3 – Comparison of reduced evaluation test data from four separate candidate systems with that from the reference system
25 9.5 Determining qualification for performances different to the reference system
9.5.1 Overview
9.5.2 Case B: Qualification for the same phase to phase voltage and a different expected service life
Tables
Table 1 – Conditions for qualification of candidate system
26 9.5.3 Case C: Qualification for different voltage level and same expected service life
Figure 4 – Candidate system qualified for the samevoltage level and different expected service life
27 9.5.4 Case D: Qualification for different voltage level and different expected service life
Figure 5 – Candidate system qualified for a higher voltage level and the same expected service life
28 9.5.5 Non-linearity of regression lines
Figure 6 – Candidate system qualified for a different service life and different voltage level from the reference
29 Annex A (normative) Reference life line for mainwall insulation in the absence of a manufacturer’s reference life line
Figure A.1 – Reference lifeline for mainwall insulation
30 Annex B (informative)
31 Figure B.1 – Application of heater elements to a stator bar
32 Table B.1 – Phase to ground test voltages and test temperatures
33 Figure B.2 – Typical deterioration mark at the conductive slot coating

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BS EN IEC 60034-18-32:2022
$167.15