{"id":241601,"date":"2024-10-19T15:49:28","date_gmt":"2024-10-19T15:49:28","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-61857-212009\/"},"modified":"2024-10-25T10:39:20","modified_gmt":"2024-10-25T10:39:20","slug":"bs-en-61857-212009","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-61857-212009\/","title":{"rendered":"BS EN 61857-21:2009"},"content":{"rendered":"
IEC 61857-21:2009 describes a general-purpose model (GPM) and a tall channel alternative model (GPM-TC) which can be used for the evaluation of wire-wound electrical insulation systems (EIS) where specific electrotechnical products are not available or required. The third edition cancels and replaces the second edition published in 2004, and constitutes editorial revisions to make this standard compatible with Parts 1 and 22.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 4 Construction 4.1 General information Figure 1 \u2013 GPM test object <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 4.2 Model components <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | Figure 2 \u2013 Schematic drawing of a GPM frame <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | Figure 3 \u2013 Manufacturing drawing of a GPM-TC frame <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 4.3 Assembly of the model <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 5 Number of test objects 6 Test procedure 6.1 General 6.2 Initial screening test <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 6.3 Thermal endurance test Table 1 \u2013 Initial dielectric test <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 7 End-of-life criterion Table 2 \u2013 Dielectric diagnostic test <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 8 Analysing, reporting and classification <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Electrical insulation systems. Procedures for thermal evaluation – Specific requirements for general-purpose models. Wire-wound applications<\/b><\/p>\n |