{"id":421214,"date":"2024-10-20T06:34:59","date_gmt":"2024-10-20T06:34:59","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-630542017-2\/"},"modified":"2024-10-26T12:19:27","modified_gmt":"2024-10-26T12:19:27","slug":"bsi-pd-iec-tr-630542017-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-630542017-2\/","title":{"rendered":"BSI PD IEC\/TR 63054:2017"},"content":{"rendered":"
This document applies to the fire risk analysis of low-voltage switchgear and controlgear (hereinafter referred to as “equipment”) referring to the IEC 60947 relevant publications, where the following applies:<\/p>\n
only the case where a fire originates (typically under fault or misuse conditions) within the equipment;<\/p>\n<\/li>\n
only equipment installed in normal environments. Hazardous environments, for example in presence of combustible materials, is not to be considered;<\/p>\n<\/li>\n
only the case of products selected, installed and used according to the manufacturer instructions and installation rules.<\/p>\n<\/li>\n<\/ul>\n
In addition, the following cases are not considered:<\/p>\n
faults addressed by IEC TR 61641;<\/p>\n<\/li>\n
risks due to smoke emissions;<\/p>\n<\/li>\n
double faults, i.e. multiple phenomenon, potentially combined.<\/p>\n<\/li>\n<\/ul>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
5<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
8<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 4 Ignition modes for electrical fires 4.1 General <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | Tables Table 1 \u2013 Ignition phenomena in electrotechnical products <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 4.2 Overheating at the connection point due to loose connections 4.2.1 General Table 2 \u2013 Root causes of electrical fires according to [6] Table 3 \u2013 Potential failure modes for low-voltage switchgear and controlgear <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 4.2.2 Ignition mechanisms 4.2.3 Loose connections mitigation measures Figures Figure 1 \u2013 Voltage drop and power dissipation versus current values (schematic) [5] <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | Table 4 \u2013 Function of the equipment and glow-wire test temperatures <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 4.3 Overheating of internal power conductors 4.4 Arcs 4.4.1 General <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 4.4.2 Breaking and making arcs 4.4.3 Arcs occurring at loose connections Figure 2 \u2013 Current and voltage conditions for switching arcs (schematic) [10] <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 4.4.4 Arcing through char and tracking arcs 4.4.5 Sparks 4.4.6 Arcs due to excessive overvoltage 4.5 Failure of electronic components 4.5.1 Basic description of the ignition mechanism <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 4.5.2 Mitigation measures 5 Conclusion <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | Table 5 \u2013 Relevant source ignition modes for low-voltageswitchgear and controlgear <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Low-voltage switchgear and controlgear. Fire risk analysis and risk reduction measures<\/b><\/p>\n |