This part of IEC 63093 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of EC-cores made of ferrite and the essential dimensions of coil formers to be used with them, as well the effective parameter values to be used in calculations involving them. It also gives guidelines on allowable limits of surface irregularities applicable to EC-cores.<\/p>\n
The specifications contained in this document are useful in negotiations between ferrite core manufacturers and customers about surface irregularities.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 4 Primary dimensions 4.1 General <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 4.2 Dimensions of EC-cores 4.2.1 Principal dimensions 4.2.2 Effective parameter and Amin values Figures Figure 1 \u2013 Dimensions of EC-cores <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Tables Table 1 \u2013 Dimensions of EC-cores Table 2 \u2013 Effective parameter and Amin values <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3 Dimensional limits for coil formers 5 Limits of surface irregularities 5.1 General 5.2 Examples of surface irregularities Figure 2 \u2013 Main dimensions of coil formers for EC-cores Table 3 \u2013 Dimensional limits for coil formers <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.3 Chips and ragged edges 5.3.1 General 5.3.2 Chips and ragged edges on the mating surfaces 5.3.3 Chips and ragged edges on the other surfaces Figure 3 \u2013 Examples of surface irregularities <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figure 4 \u2013 Chip location for EC-cores <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Table 4 \u2013 Area and length reference for visual inspection <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.4 Cracks 5.5 Flash 5.6 Pull-outs Figure 5 \u2013 Crack and pull-out locations for EC-cores <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.7 Crystallites 5.8 Pores Figure 6 \u2013 Crystallite location for EC-cores Table 5 \u2013 Limits for cracks <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Figure 7 \u2013 Pore location for EC-cores <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Annex A (normative)Example of standard coil formers Figure A.1 \u2013 Main dimensions of coil formers for EC 35, EC 41, EC 52, EC 70 cores Figure A.2 \u2013 Main dimensions of coil formers for EC 90 core <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Table A.1 \u2013 Main dimensions of coil formers(examples from Figures A.1 and A.2) for EC-cores <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex B (informative)Reference of allowable areas of chips Table B.1 \u2013 Allowable areas of chips for EC-cores <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Ferrite cores. Guidelines on dimensions and the limits of surface irregularities – EC-cores for use in power supply applications<\/b><\/p>\n |