1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFerrite cores Standard inductance factor for gapped cores and its toleranceBS EN 62358:2012National forewordThis British Standard is the UK implementation of EN 62358:2012. It is
2、 identical to IEC 62358:2012. It supersedes BS EN 62358:2004 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee EPL/51, Transformers, inductors, magnetic components and ferrite materials.A list of organizations represented on this committee can be obtaine
3、d on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013.Published by BSI Standards Limited 2013 ISBN 978 0 580 64881 6 ICS 29.100.10Compliance with
4、 a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 62358:2012EUROPEAN STANDARD EN 62358
5、NORME EUROPENNE EUROPISCHE NORM December 2012CENELEC European Committee for Electrotechnical StandardizationComit Europen de Normalisation ElectrotechniqueEuropisches Komitee fr Elektrotechnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation
6、 in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62358:2012 E ICS 29.100.10 Supersedes EN 62358:2004 English version Ferrite cores - Standard inductance factor for gapped cores and its tolerance(IEC 62358:2012) Noyaux de ferrite - Inductance spcifique normalise pourn
7、oyaux entrefer et tolrances associes (CEI 62358:2012) Ferritkerne - Standard-Induktivittsfaktor fr Kerne mit Luftspalt und dessen Toleranz(IEC 62358:2012) This European Standard was approved by CENELEC on 2012-11-16. CENELEC members are bound to complywith the CEN/CENELEC Internal Regulations which
8、stipulate the conditions for giving this European Standardthe status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained onapplication to the CEN-CENELEC Management Centre or to any CENELEC member. This Eur
9、opean Standard exists in three official versions (English, French, German). A version in any otherlanguage made by translation under the responsibility of a CENELEC member into its own language and notifiedto the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC mem
10、bers are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norw
11、ay, Poland,Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 62358:2012EN 62358:2012 - 2 - Foreword The text of document 51/1005/FDIS, future edition 2 of IEC 62358, prepared by IEC TC 51, “Magneticcomponents and ferrite materials“ was submitted
12、to the IEC-CENELEC parallel vote and approved byCENELEC as EN 62358:2012. The following dates are fixed: latest date by which the document has to be implemented at national level bypublication of an identical national standard or by endorsement (dop) 2013-08-16 latest date by which the national stan
13、dards conflicting with the document have to be withdrawn (dow) 2015-11-16 This document supersedes EN 62358:2004. EN 62358:2012 includes the following significant technical changes with respect to EN 62358:2004: a) addition of AL value (inductance factor) and its tolerance for PQ-cores; b) addition
14、of AL value (inductance factor) and its tolerance for EFD-cores; c) addition of AL value (inductance factor) and its tolerance for Low-profile ER-I-cores; d) addition of AL value (inductance factor) and its tolerance for Low-profile ER-cores (ER9,5 2,5 5, ER11 2,5 6, ER14,5 3 7 ferrite cores are sam
15、e as in EN 62358:2004); e) addition of AL value (inductance factor) and its tolerance for Low-profile PQ-I-cores. Attention is drawn to the possibility that some of the elements of this document may be the subject ofpatent rights. CENELEC and/or CEN shall not be held responsible for identifying any
16、or all such patentrights. Endorsement notice The text of the International Standard IEC 62358:2012 was approved by CENELEC as a EuropeanStandard without any modification. BS EN 62358:2012- 3 - EN 62358:2012 Annex ZA (normative) Normative references to international publicationswith their correspondi
17、ng European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any ame
18、ndments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HDapplies. Publication Year Title EN/HD YearIEC 61185 - Ferrite cores (ETD-cores) intended for use inpower supply applications - Dimensions EN 61185 - IEC 61596 - M
19、agnetic oxide EP-cores and associatedparts for use in inductors and transformers - Dimensions EN 61596 - IEC 62044-2 - Cores made of soft magnetic materials - Measuring methods - Part 2: Magnetic properties at low excitationlevel EN 62044-2 - IEC 62317-2 - Ferrite cores - Dimensions - Part 2: Pot-co
20、res for use in telecommunications, power supply, and filterapplications EN 62317-2 - IEC 62317-4 - Ferrite cores - Dimensions - Part 4: RM-cores and associated parts EN 62317-4 - IEC 62317-7 - Ferrite cores - Dimensions - Part 7: EER-cores EN 62317-7 - IEC 62317-8 - Ferrite cores - Dimensions - Part
21、 8: E-cores EN 62317-8 - IEC 62317-9 - Ferrite cores - Dimensions - Part 9: Planar cores EN 62317-9 - IEC 62317-13 - Ferrite cores - Dimensions - Part 13: PQ-cores for use in power supply applications EN 62317-13 - ISO 497 - Guide to the choice of series of preferrednumbers and series containing mor
22、e roundedvalues of preferred numbers - - BS EN 62358:2012 2 62358 IEC:2012 CONTENTS INTRODUCTION . 5 1 Scope . . 6 2 Normative references . 6 3 Measuring method . 6 4 ALvalue and its tolerance . 6 4.1 General . 6 4.2 Tolerance . 7 4.3 E-core . 7 4.4 ETD-core and EER-core . 7 4.5 EP-core . 7 4.6 RM-c
23、ore 7 4.7 Pot-core 7 4.8 PQ-core 7 4.9 Low-profile core . . 7 Table 1 Tolerance versus letter code . 7 Table 2 AL and its tolerance for E-cores (IEC 62317-8) . . 8 Table 3 AL and its tolerance for ETD-cores (IEC 61185) and EER-cores (IEC 62317-7) . 10 Table 4 ALand its tolerance for EP-cores (IEC 61
24、596) . 11 Table 5 ALand its tolerance for RM-cores (IEC 62317-4) . 11 Table 6 ALand its tolerance for Pot-cores (IEC 62317-2) . 12 Table 7 ALand its tolerance for PQ-cores (IEC 62317-13) . . 13 Table 8 ALand its tolerance for EL-cores (IEC 62317-9) 13 Table 9 ALand its tolerance for EL-I (plate)-cor
25、es (IEC 62317-9) . 14 Table 10 ALand its tolerance for low-profile ER-I (plate)-cores (IEC 62317-9) . 15 Table 11 ALand its tolerance for low-profile ER-cores (IEC 62317-9) . . 16 Table 12 ALand its tolerance for low-profile E-I (plate)-cores (IEC 62317-9) 17 Table 13 ALand its tolerance for low-pro
26、file E-cores (IEC 62317-9) . 17 Table 14 ALand its tolerance for low-profile RM cores (IEC 62317-4) . 18 Table 15 ALand its tolerance for low-profile PQ-I (plate)-cores (IEC 62317-13) . . 18 BS EN 62358:201262358 IEC:2012 5 INTRODUCTION The ALvalue (inductance factor) and its tolerance have been spe
27、cified by the users before. When manufacturers wish to have an inventory for short delivery, they have to hold the products before gapping since there is no standard for the ALvalue. Because of electronic commerce and the increased demand for rapid delivery of products, it will be more convenient fo
28、r customers and suppliers to refer to established ALvalues and tolerances. This standard has been developed to meet this demand. As a result of the implementation of this standard, it will be easier for core suppliers and users to develop electronic components using gapped soft ferrite cores. Conven
29、tional businesses will benefit, as will new companies working in new fields such as e-commerce. It is recommended that users specify ALvalues by selecting them from this standard. The tolerances in this standard are recommended, but for historical reasons a manufacturers specification might differ f
30、or some components. Users should confirm tolerances from the manufacturers literature. Manufacturers are encouraged to use the ALvalues in this standard when building stocks of gapped cores for short delivery. In cases where users or manufacturers specify a gap length with tolerances the ALvalue wil
31、l only be approximate and without tolerance. Such cases will be outside the scope of this standard. BS EN 62358:2012 6 62358 IEC:2012 FERRITE CORES STANDARD INDUCTANCE FACTOR FOR GAPPED CORES AND ITS TOLERANCE 1 Scope This International Standard provides standard ALvalues (inductance factors) and th
32、eir tolerances of Pot, RM, ETD, E, EER, EP, PQ and low-profile gapped ferrite cores. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For u
33、ndated references, the latest edition of the referenced document (including any amendments) applies. IEC 61185, Ferrite cores (ETD-cores) intended for use in power supply applications Dimensions IEC 61596, Magnetic oxide EP-cores and associated parts for use in inductors and transformers Dimensions
34、IEC 62044-2, Cores made of soft magnetic materials Measuring methods Part 2: Magnetic properties at low excitation level IEC 62317-2, Ferrite cores Dimensions Part 2: Pot-cores for use in telecommunications, power supply, and filter applications IEC 62317-4, Ferrite cores Dimensions Part 4: RM-cores
35、 and associated parts IEC 62317-7, Ferrite cores Dimensions Part 7: EER-cores IEC 62317-8, Ferrite cores Dimensions Part 8: E-cores IEC 62317-9, Ferrite cores Dimensions Part 9: Planar cores IEC 62317-13, Ferrite cores Dimensions Part 13: PQ-cores for use in power supply applications ISO 497, Guide
36、to the choice of series of preferred numbers and of series containing more rounded values of preferred numbers 3 Measuring method The method for measuring the inductance factor shall be in accordance with IEC 62044-2. 4 ALvalue and its tolerance 4.1 General The series of preferred numbers of the ALv
37、alue shall be selected from the R10 series of ISO 497. BS EN 62358:201262358 IEC:2012 7 4.2 Tolerance The tolerance shall be selected from Table 1, which specifies letter codes for the tolerances. Table 1 Tolerance versus letter code Tolerance % 3 5 7 10 12 15 20 Letter code A J E K H L M 4.3 E-core
38、 The ALvalue and its tolerance for E-cores shall be selected from Table 2. NOTE The E-core is a pair of an E shape core. 4.4 ETD-core and EER-core The ALvalue and its tolerance for ETD-cores and EER-cores shall be selected from Table 3. 4.5 EP-core The ALvalue and its tolerance for EP-cores shall be
39、 selected from Table 4. 4.6 RM-core The ALvalue and its tolerance for RM-cores shall be selected from Table 5. 4.7 Pot-core The AL value and its tolerance for Pot-cores shall be selected from Table 6. 4.8 PQ-core The ALvalue and its tolerance for PQ-cores shall be selected from Table 7. 4.9 Low-prof
40、ile core The AL value and its tolerance for EL-cores shall be selected from Tables 8 and 9. The AL value and its tolerance for low-profile ER-cores shall be selected from Tables 10 and 11. The ALvalue and its tolerance for low-profile E-cores shall be selected from Tables 12 and 13. The ALvalue and
41、its tolerance for low-profile RM-cores shall be selected from Table 14. The ALvalue and its tolerance for low-profile PQ-I (plate)-cores shall be selected from Table 15. BS EN 62358:2012 8 62358 IEC:2012 Table2 ALanditstolerance for E-cores(IEC62317-8)(1of2)IECreferencesCoresizeIndustrial references
42、AL(nH/N2) tolerancein%A12,5A16A20A25A31,5A40A50A63A80A100A125A160A200A250A315A400A500A630A800E5,3/2FEE5,25EE510101520E6,3/2FEE6,1810101520E8/2FEE85710101520E8,3/4FEE8,3EE87710121520E8,8/2FEE977101520E10/3FEE10557101215E10,2/5FEE10,2EE10x11557101015E13/4FEE12,7AEF12,65577101215E13/6EE13557101215E16/4
43、,8FEE16AEE16557101012E16/5FEE16,1EF1655710101215E19/5FEE19AEE1935710101015E19,3/4,8EE-187 EE19x1635710101015E20/6FEE20,1EF203577101012E25/7FEE25,1EF2533577101012E25,4/6FEE25,4A3577101012E25,4/6,3EE24x25EE25x193577101012E30/11FEE30AEE303333577101010BS EN 62358:201262358 IEC:2012 9 Table2(2 of2)IECref
44、erencesCoresizeIndustrial referencesAL(nH/N2) tolerancein%A12,5A16A20A25A31,5A40A50A63A80A100A125A160A200A250A315A400A500A630A800E32/9FEE32,1EF3233357771012E33/13FEE33AEE33333557101010E34,6/9EE375EE35x 28B3577101010E35/10FEE35AEE3535577101015E40/11FEE40AEE4033577101010E41/13EE21EE41x 33C3335571010E4
45、2/15FEE42A333357710E42/20FEE42B333337710E47/16EE625EE47x 395555771012E50/15EE50A EE5055557101015E55/21FEE55,2A355555710E55/25FEE55,2B55555577E60/16FEE60AEE60355771012E65/27FEE65,23555557NOTEToguaranteethetolerancesinthistable, 0,25AQL(acceptablequalitylevel)isapplied.BS EN 62358:2012 10 62358 IEC:20
46、12 Table3 ALandits toleranceforETD-cores(IEC61185)andEER-cores(IEC62317-7)IECreferencesCoresizeAL(nH/N2) tolerancein%A50A63A80A100A125A160A200A250A315A400A500A630ETD193357710ETD24335771010ETD2933577101012ETD3433577101012ETD39335571010ETD443557101015ETD493557101215ETD54555571010ETD5955555710EER25,533
47、77101010EER2833557101010EER28L33557101010EER3533557101010EER39335571010EER4033357710EER423557101015EER493557101012NOTEToguaranteethetolerancesinthistable,0,25AQLisapplied.BS EN 62358:201262358 IEC:2012 11 Table4 ALanditstolerance forEP-cores(IEC61596)IECreferencesCoresizeAL(nH/N2) tolerancein%A40A50
48、A63A80A100A125A160A200A250A315A400A500A630A800A1000EP733335571010EP1033335571010EP1333333557710EP17333333557710EP203333335577NOTEToguarantee the tolerancesin thistable,0,25 AQL isapplied.Table5 ALanditstolerance forRM-cores(IEC62317-4)IECreferencesCoresizeAL(nH/N2) tolerancein%A25A31,5A40A50A63A80A1
49、00A125A160A200A250A315A400A500A630A800A1000A1250A1600A2000RM43335557710RM5333335557RM6S333333555RM6R333333355RM733333555710RM833333355710RM103333333355710RM1233333335571010RM1433333557101012RM14A33333355771012NOTEToguaranteethetolerancesinthistable,0,25AQLisapplied.BS EN 62358:2012 12 62358 IEC:2012 Table6 ALanditstolerance
