BS EN 61858-1:2014
$167.15
Electrical insulation systems. Thermal evaluation of modifications to an established electrical insulation system (EIS) – Wire-wound winding EIS
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 38 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 9 | English CONTENTS |
| 11 | INTRODUCTION |
| 12 | 1 Scope 2 Normative references |
| 14 | 3 Terms and definitions |
| 16 | 4 General considerations |
| 17 | Figures Figure 1 – Overview of evaluation methods |
| 18 | 5 Substitution of phase or ground insulation 5.1 Generically identical 5.2 Substitution or addition of selected components and additives Figure 2 – Substitution of phase and ground insulation |
| 19 | 6 Substitution of winding wire 6.1 Non bondable winding wire Figure 3 – Substitution of non-bondable winding wire |
| 20 | 6.2 Bondable winding wire Figure 4 – Substitution of bondable winding wire |
| 21 | 6.3 Substitution of conductor material Figure 5 – Substitution of conductor material |
| 22 | 7 Substitution of impregnating resin/varnish 7.1 Thermal class determination Figure 6 – Substitution of impregnating resin/varnish |
| 23 | 7.2 Evaluation 7.2.1 Thermal classes equal or better 7.2.2 One thermal class lower 7.2.3 Other criteria 8 Substitution with other EIM 8.1 Technically equivalent materials 8.2 Previous evaluation 8.3 Other Tables Table 1 – Thermal ageing test methods for resin/varnishes |
| 24 | 9 Evaluation of additions 9.1 Addition of an impregnating resin/varnish 9.2 Addition of other components Figure 7 – Additions of resins/varnishes and other components used in combination with the EIMs evaluated in the EIS |
| 25 | 10 Chemical compatibility of a combination of materials 10.1 General 10.2 Construction 10.2.1 Test apparatus 10.2.2 Material specimens 10.2.3 Contents of tube |
| 26 | 10.3 Test procedure 10.3.1 Preparation of tubes 10.3.2 Thermal conditioning 10.3.3 Opening procedure |
| 27 | 10.3.4 Evaluation of samples 11 Single-point thermal ageing test (procedure C) 11.1 Test objects 11.2 Establishing the EIS relative thermal endurance index (EIS RTE) |
| 28 | 11.3 Interpretation of results 12 Full thermal aging test (procedure D) |
| 29 | Annex A (normative) Classes of winding wire Table A.1 – Winding wire types – Round copper or aluminum conductor |
| 31 | Annex B (informative) Visual representations of coils B.1 Form wound coils Figure B.1 – Form-wound coil comparison Figure B.2 – Form-wound coil comparison – Close-up |
| 32 | B.2 Precision-wound coil Figure B.3 – Form-wound coil comparison – Different angle Figure B.4 – Form-wound coil detail |
| 33 | B.3 Random-wound coil Figure B.5 – Examples of precision-wound coils Figure B.6 – Example of precision-wound coil – Close-up |
| 34 | Figure B.7 – Example of random-wound coil Figure B.8 – Example of random-wound coil – Close-up |
| 35 | Bibliography |
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BS EN 61858-1:2014
Electrical insulation systems. Thermal evaluation of modifications to an established electrical insulation system (EIS) –…
