EN 62489-2:2014

SLOVENSKI STANDARD
01-december-2014
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Electroacoustics - Audio-frequency induction loop systems for assisted hearing - Part 2:
Methods of calculating and measuring the low-frequency magnetic field emissions from
the loop for assessing conformity with guidelines on limits for human exposure
Ta slovenski standard je istoveten z: EN 62489-2:2014
ICS:
11.180.15 3ULSRPRþNL]DJOXKHRVHEHLQ Aids for deaf and hearing
RVHEH]RNYDURVOXKD impaired people
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62489-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 17.140.50 Supersedes EN 62489-2:2011
English Version
Electroacoustics - Audio-frequency induction loop systems for
assisted hearing - Part 2: Methods of calculating and measuring
the low-frequency magnetic field emissions from the loop for
assessing conformity with guidelines on limits for human
exposure
(IEC 62489-2:2014)
Electroacoustique - Systèmes de boucles d'induction Akustik - Audiofrequenz-Induktionsschleifenanlagen zur
audiofréquences pour améliorer l'audition - Partie 2: Unterstützung von Hörsystemen - Teil 2: Verfahren zur
Méthodes de calcul et de mesure des émissions de champ Berechnung und Messung der niederfrequenten
magnétique basse fréquence à partir de la boucle pour Emissionen des durch die Schleife erzeugten Magnetfeldes
l'évaluation de la conformité aux instructions sur les limites zur Einschätzung der Konformität mit Richtlinien zu
d'exposition humaine Grenzwerten für die Belastung des Menschen
(CEI 62489-2:2014) (IEC 62489-2:2014)
This European Standard was approved by CENELEC on 2014-10-29. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62489-2:2014 E
Foreword
The text of document 29/847/FDIS, future edition 2 of IEC 62489-2, prepared by IEC/TC 29
"Electroacoustics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
(dop) 2015-07-29
• latest date by which the document has to be implemented at
national level by publication of an identical national
standard or by endorsement
(dow) 2017-10-29
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 62489-2:2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62489-2:2014 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 62233 NOTE Harmonized as EN 62233.
IEC 62311:2007 NOTE Harmonized as EN 62311:2008 (modified).

- 3 - EN 62489-2:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding 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 amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60118-4 2006 Electroacoustics - Hearing aids - EN 60118-4 2006
Part 4: Induction loop systems for hearing
aid purposes - Magnetic field strength
IEC 60268-1 1985 Sound system equipment - HD 483.1 S2 1989
Part 1: General
IEC 60268-2 1987 Sound system equipment - HD 483.2 S2 1993
Part 2: Explanation of general terms and
calculation methods
IEC 60268-10 1991 Sound system equipment - HD 483.10 S1 1993
Part 10: Peak programme level meters

IEC 62489-2 ®
Edition 2.0 2014-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electroacoustics – Audio-frequency induction loop systems for assisted

hearing –
Part 2: Methods of calculating and measuring the low-frequency magnetic field

emissions from the loop for assessing conformity with guidelines on limits for

human exposure
Électroacoustique – Systèmes de boucles d’induction audiofréquences pour

améliorer l'audition –
Partie 2: Méthodes de calcul et de mesure des émissions de champ magnétique

basse fréquence à partir de la boucle pour l’évaluation de la conformité aux

instructions sur les limites d’exposition humaine

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX P
ICS 17.140.50 ISBN 978-2-8322-1860-0

– 2 – IEC 62489-2:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Rated values . 6
4 Situation regarding current standards . 6
5 Configurations of loops . 7
5.1 Main types of configuration . 7
5.2 General considerations . 7
5.3 Large-area loops . 7
5.4 Medium-area loops . 7
5.5 Small-area loops . 8
5.6 Solenoid antennas . 8
6 Calculations . 8
6.1 General . 8
6.2 Solenoid antennas . 9
7 Measurements . 9
7.1 General . 9
7.2 Input signal . 9
7.3 Measuring instrument. 9
8 Comparison of calculated or measured results with guidelines or limits . 10
9 Meeting limits or guidelines . 10
10 Measurement uncertainty . 10
Annex A (informative) Rationale for this product-family magnetic field emission
standard for audio-frequency induction-loop systems (AFILS) in the context of human
exposure to non-ionizing radiation . 11
Bibliography . 14

Figure 1 – An ear-hook induction transducer, with a BTE (behind the ear) hearing aid
body for scale . 8
Figure A.1 – ICNIRP magnetic field reference levels . 11

Table 1 – Basic restrictions . 10
Table A.1 – Application to AFILS of Table 1 of IEC 62311:2007 "Characteristics and
parameters of the equipment to be considered" . 12

IEC 62489-2:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROACOUSTICS –
AUDIO-FREQUENCY INDUCTION
LOOP SYSTEMS FOR ASSISTED HEARING –

Part 2: Methods of calculating and measuring the low-frequency
magnetic field emissions from the loop for assessing conformity
with guidelines on limits for human exposure

FOREWORD
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