Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment -- Part 2: Electrical characteristics for cores using YEE 2 laminations

Specifies the electrical characteristics of laminated core packages using YEE 2 laminations according to IEC 60740. It also gives the marking and packaging requirements.

Kernblechpakete für Transformatoren und Drosseln für nachrichtentechnische und elektronische Einrichtungen -- Teil 2: Elektrische Kenngrößen für Kerne mit YEE 2-Blechen

Noyaux en tôles découpées pour transformateurs et inductances destinés aux équipements électroniques et de télécommunications -- Partie 2: Caractéristiques électriques pour noyaux utilisant des tôles YEE 2

Spécifie les caractéristiques électriques de noyaux en tôles découpées utilisant des tôles YEE 2 conformément à la CEI 60740. Donne également les prescriptions de marquage et de conditionnement.

Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Part 2: Electrical characteristics for cores using YEE 2 laminations (IEC 61021-2:1995)

General Information

Status
Published
Publication Date
31-Aug-2002
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Sep-2002
Due Date
01-Sep-2002
Completion Date
01-Sep-2002

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SLOVENSKI STANDARD
SIST EN 61021-2:2002
01-september-2002
Laminated core packages for transformers and inductors for use in

telecommunication and electronic equipment - Part 2: Electrical characteristics for

cores using YEE 2 laminations (IEC 61021-2:1995)

Laminated core packages for transformers and inductors for use in telecommunication

and electronic equipment -- Part 2: Electrical characteristics for cores using YEE 2

laminations
Kernblechpakete für Transformatoren und Drosseln für nachrichtentechnische und

elektronische Einrichtungen -- Teil 2: Elektrische Kenngrößen für Kerne mit YEE 2-

Blechen
Noyaux en tôles découpées pour transformateurs et inductances destinés aux
équipements électroniques et de télécommunications -- Partie 2: Caractéristiques
électriques pour noyaux utilisant des tôles YEE 2
Ta slovenski standard je istoveten z: EN 61021-2:1997
ICS:
29.100.10 Magnetne komponente Magnetic components
29.180 Transformatorji. Dušilke Transformers. Reactors
SIST EN 61021-2:2002 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61021-2:2002
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SIST EN 61021-2:2002
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SIST EN 61021-2:2002
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SIST EN 61021-2:2002
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SIST EN 61021-2:2002
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SIST EN 61021-2:2002
NORME CEI
INTERNATIONALE IEC
61021-2
INTERNATIONAL
Première édition
STANDARD
First edition
1995-05
Noyaux en tôles découpées pour transformateurs
et inductances destinés aux équipements
électroniques et de télécommunications —
Partie 2:
Caractéristiques électriques pour noyaux
utilisant des tôles YEE 2
Laminated core packages for transformers and
inductors for use in telecommunication and
electronic equipment —
Part 2:
Electrical characteristics for cores using YEE 2
laminations
© IEC 1995 Droits de reproduction réservés — Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in

utilisée sous quelque forme et par aucun any form or by any means, electronic or mechanical,

que ce soit

procédé, électronique ou mécanique, y la photo- including photocopying and microfilm, without permission in

compris
et l'accord écrit writing from the publisher.
copie les microfilms, sans de l'éditeur.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
IEC McN4uyHapogHae
3r1eNTpOTexHN4eCNaR KOMNCCNA
Pour prix, voir catalogue en vigueur
• • For price, see current catalogue
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SIST EN 61021-2:2002
1021-2 ©I EC: 1995 - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative references 7
3 Definitions 9
4 Electrical characteristics 9
5 Operating temperature range 17
6 Electrical tests 17
6.1 General test conditions 17
6.2 Test procedure 17
6.3 Calculation 21
7 Marking 23
7.1 Cores 23
7.2 Package 25
8 Packaging 25
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SIST EN 61021-2:2002
1021-2 © I EC: 1995 - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
LAMINATED CORE PACKAGES FOR
TRANSFORMERS AND INDUCTORS FOR USE IN
TELECOMMUNICATION AND ELECTRONIC EQUIPMENT -
Part 2: Electrical characteristics for
cores using YEE 2 laminations
FOREWORD

1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization

comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to

promote international cooperation on all questions concerning standardization in the electrical and

electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.

Their preparation is entrusted to technical committees; any IEC National Committee interested in

the subject dealt with may participate in this preparatory work. International, governmental and

non-governmental organizations liaising with the IEC also participate in this preparation. The IEC

collaborates closely with the International Organization for Standardization (ISO) in accordance with

conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on

which all the National Committees having a special interest therein are represented, express, as nearly as

possible, an international consensus of opinion on the subjects dealt with.

3) They have the form of recommendations for international use published in the form of standards, technical

reports or guides and they are accepted by the National Committees in that sense.

4) In order to promote international unification, IEC National Committees undertake to apply IEC International

Standards transparently to the maximum extent possible in their national and regional standards. Any

divergence between the IEC Standard and the corresponding national or regional standard shall be clearly

indicated in the latter.

5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with one of its standards.

International Standard IEC 1021-2 has been prepared by IEC technical committee 51:

Magnetic components and ferrite materials.
The text of this standard is based on the following documents:
DIS Report on voting
51/354/DIS 51 /388/RVD

Full information on the voting for the approval of this standard can be found in the report

on voting indicated in the above table.

IEC 1021 consists of the following parts, under the general title: Laminated core packages

for transformers and inductors for use in telecommunication and electronic equipment:

- Part 1: 1990, Dimensions;
- Part 2: 1994, Electrical characteristics for cores using YEE 2 laminations.
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SIST EN 61021-2:2002
1021-2 © I EC: 1995 - 7 -
LAMINATED CORE PACKAGES FOR
TRANSFORMERS AND INDUCTORS FOR USE IN
TELECOMMUNICATION AND ELECTRONIC EQUIPMENT -
Part 2: Electrical characteristics for
cores using YEE 2 laminations
1 Scope

This part of IEC 1021 specifies the electrical characteristics of laminated core packages

using
YEE 2 laminations according to IEC 740 and, in their larger variant, according

to IEC 1021-1, for cores made from specified grades of oriented silicon-steel or nickel-iron

alloys. It also gives the marking and packaging requirements.

The main applications of these cores exclude the significant transmission of power with

the consequence that the principal electrical characteristic may be expressed in terms of

inductance factor AL.

Although laminated core packages are produced with or without an air gap in the centre

leg of the magnetic circuit, this part deals only with gaped cores, where control of the

length of a designed air gap enables specified A L values to be achieved.

NOTE — The electrical characteristics of laminated core packages without an air gap is a matter for

agreement between customer and manufacturer.
2 Normative references

The following normative documents contains provisions which, through reference in this

text, constitute provisions of this part of IEC 1021. At the time of publication, the editions

indicated were valid. All normative documents are subject to revision, and pa
rties to
agreements based on this pa rt
of IEC 1021 are encouraged to investigate the possibility of

applying the most recent editions of the normative documents indicated below. Members

of IEC and ISO
maintain registers of currently valid International Standards.
IEC 50(221): 1990,
International Electrotechnical Vocabulary (IEV) - Chapter 221:
Magnetic materials and components
Amendment 1 (1993)
IEC 68-1: 1988, Environmental testing - Part 1: General and guidance
IEC 317-4: 1990,
Specifications for particular types of winding wires - Part 4: Solderable
polyurethane enamelled round copper wires, class 130
IEC 404-8-6: 1986,
Magnetic materials - Part 8: Specifications for individual materials -
Section six: Soft magnetic metallic materials
IEC 740: 1982,
Laminations for transformers and inductors for use in telecommunication
and electronic equipment
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SIST EN 61021-2:2002
1021-2 © I EC: 1995 - 9 -
IEC 1021-1: 1990,
Laminated core packages for transformers and inductors used in
telecommunication and electronic equipment - Pa
rt 1: Dimensions
3 Definitions

For definitions of the general terms used, reference should be made to IEC 50(221).

The definition of "laminated core package" is given in IEC 1021-1.
For the purpose of this part of IEC 1021, the following definition applies:

inductance factor The inductance L of a specified coil placed on a given core in a

specified position, divided by the square of the number of turns N.
A -
4 Electrical characteristics

The inductance factors of laminated core packages and their tolerances shall be as

specified in tables 1, 2 and 3 below for the material grades indicated, when made from the

specified sheet thickness, clamped with the specified contact forces, and measured under

the specified measuring conditions, using the test coils and test arrangement prescribed in

clause 6.
NOTES

1 In order to measure the A values correctly, it is necessary for the mating surfaces to be clean and

corrosion-free, and assembled in perfect alignment.

2 The specified A L values apply in the absence of premagnetization (d.c. bias). The deviations from t

...

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