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BS EN IEC 63093-11:2018:2019 Edition

BS EN IEC 63093-11:2018:2019 Edition

$142.49

Ferrite cores. Guidelines on dimensions and the limits of surface irregularities – EC-cores for use in power supply applications

Published By Publication Date Number of Pages
BSI 2019 24
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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.

The specifications contained in this document are useful in negotiations between ferrite core manufacturers and customers about surface irregularities.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
6 CONTENTS
7 FOREWORD
9 1 Scope
2 Normative references
3 Terms and definitions
4 Primary dimensions
4.1 General
10 4.2 Dimensions of EC-cores
4.2.1 Principal dimensions
4.2.2 Effective parameter and Amin values
Figures
Figure 1 – Dimensions of EC-cores
11 Tables
Table 1 – Dimensions of EC-cores
Table 2 – Effective parameter and Amin values
12 4.3 Dimensional limits for coil formers
5 Limits of surface irregularities
5.1 General
5.2 Examples of surface irregularities
Figure 2 – Main dimensions of coil formers for EC-cores
Table 3 – Dimensional limits for coil formers
13 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 – Examples of surface irregularities
14 Figure 4 – Chip location for EC-cores
15 Table 4 – Area and length reference for visual inspection
16 5.4 Cracks
5.5 Flash
5.6 Pull-outs
Figure 5 – Crack and pull-out locations for EC-cores
17 5.7 Crystallites
5.8 Pores
Figure 6 – Crystallite location for EC-cores
Table 5 – Limits for cracks
18 Figure 7 – Pore location for EC-cores
19 Annex A (normative)Example of standard coil formers
Figure A.1 – Main dimensions of coil formers for EC 35, EC 41, EC 52, EC 70 cores
Figure A.2 – Main dimensions of coil formers for EC 90 core
20 Table A.1 – Main dimensions of coil formers(examples from Figures A.1 and A.2) for EC-cores
21 Annex B (informative)Reference of allowable areas of chips
Table B.1 – Allowable areas of chips for EC-cores
22 Bibliography

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BS EN IEC 63093-11:2018
$142.49