BS EN IEC 60370:2018
$102.76
Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes. Electric breakdown methods
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 22 |
This International Standard covers methods of test for the determination of thermal endurance (temperature index) of electrical insulating resins and varnishes for impregnation purposes.
It is done by means of impregnating glass cloth and measuring electric strength or breakdown voltage before and after heat ageing.
It covers the materials described in IEC 60455‑3‑5 and IEC 60464‑3‑2 and similar materials.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | English CONTENTS |
| 7 | FOREWORD |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions 4 Methods of test 4.1 General |
| 12 | 4.2 Method 1 – Curved electrode system 4.2.1 Specimen 4.2.2 Impregnation process |
| 13 | 4.2.3 Curved electrode system 4.2.4 Ageing ovens and ageing temperatures Figures Figure 1 – Curved electrode fixture |
| 14 | 4.2.5 Test procedure |
| 15 | Figure 2 – Electric strength – Ageing time – Graph |
| 16 | 4.3 Method 2 – Ball to plate method 4.3.1 Specimen 4.3.2 Impregnation process Figure 3 – Thermal endurance graph |
| 17 | 4.3.3 Electrode system 4.3.4 Ageing ovens and ageing temperatures |
| 18 | 4.3.5 Test procedure |
| 19 | Figure 4 – Breakdown voltage – Ageing time – Graph Figure 5 – Thermal endurance graph |
| 20 | 5 Report |
| 21 | Bibliography |
