IEC 61558-2-26:2013 deals with the safety of transformers, power supply units and switch mode power supply units all for saving energy and other purposes in electrical installations by adjusting the output voltage and\/or other electrical characteristics on the output circuits without interruption affected by the transformers, power supply unit and switch mode power supply unit. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip them for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months from the date of publication. This publication is to be read in conjunction with \/2.<\/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 | 1 Scope <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4 General requirements 5 General notes on test <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6 Ratings 7 Classification 8 Marking and other information <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 9 Protection against electric shock <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 10 Change of input voltage setting 11 Output voltage and output current under load <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 12 No-load output voltage 13 Short-circuit voltage 14 Heating Table 101 \u2013 Output voltage difference <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 15 Short circuit and overload protection 16 Mechanical strength 17 Protection against harmful ingress of dust, solid objects and moisture 18 Insulation resistance, dielectric strength and leakage current 19 Construction <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 20 Components 21 Internal wiring 22 Supply connection and other external flexible cables or cords 23 Terminals for external conductors 24 Provisions for protective earthing 25 Screws and connections 26 Creepage distances, clearances and distances through insulation 27 Resistance to heat, fire and tracking 28 Resistance to rusting <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annexes Annex B (normative) Testing a series of transformers Annex L (normative) Routine tests (production test) <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex AA (informative) Saving energy <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Annex BB (informative) Incorporated transformers <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Safety of transformers, reactors, power supply units and combinations thereof – Particular requirements and tests for transformers and power supply units for saving energy and other purposes<\/b><\/p>\n |