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

Published date

24-10-2014

Publisher

European Committee for Standards - Electrical

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Rated values
4 Situation regarding current standards
5 Configurations of loops
6 Calculations
7 Measurements
8 Comparison of calculated or measured
   results with guidelines or limits
9 Meeting limits or guidelines
10 Measurement uncertainty
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
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 62489-2:2014 applies to audio-frequency induction-loop systems for assisted hearing. It may also be applied to such systems used for other purposes, as far as it is applicable. The standard is intended for assessment of human exposure to low-frequency magnetic fields produced by the system, by calculation and by in-situ testing. This standard does not deal with other aspects of safety, for which IEC 60065 applies, or with EMC. This second edition cancels and replaces the first edition published in 2011. This edition constitutes a technical revision which includes significant technical changes to reflect several updates to the ICNIRP Guide (Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields) to which it makes frequent reference. The most significant change is that the underlying metric in the Guide has been changed from tissue current density to induced electric field.Keywords: hearing aid, accessibility, surdity, deafness

Committee	CLC/SR 29
DocumentType	Standard
PublisherName	European Committee for Standards - Electrical
Status	Current

Standards	Relationship
BS EN 62489-2:2014	Identical
NBN EN 62489-2 : 2014	Identical
NF EN 62489-2 : 2014	Identical
CEI EN 62489-2 : 2015	Identical
I.S. EN 62489-2:2014	Identical
NEN EN IEC 62489-2 : 2014	Identical
DIN EN 62489-2:2015-08	Identical
IEC 62489-2:2014	Identical
PN EN 62489-2 : 2015	Identical
UNE-EN 62489-2:2011	Identical
UNE-EN 62489-2:2014	Identical
SN EN 62489-2 : 2014	Identical

HD 483.10 : 200S1	SOUND SYSTEM EQUIPMENT - PART 10: PEAK PROGRAMME LEVEL METERS
IEC 60268-10:1991	Sound system equipment - Part 10: Peak programme level meters
IEC 62311:2007	Assessment of electronic and electrical equipment related to human exposure restrictions for electromagnetic fields (0 Hz - 300 GHz)
HD 483.1 : 200S2	SOUND SYSTEM EQUIPMENT - GENERAL
IEC 60268-1:1985	Sound system equipment. Part 1: General
IEC 60118-4:2014+AMD1:2017 CSV	Electroacoustics - Hearing aids - Part 4: Induction-loop systems for hearing aid purposes - System performance requirements
IEC 62233:2005	Measurement methods for electromagnetic fields of household appliances and similar apparatus with regard to human exposure
HD 483.2 : 200S2	SOUND SYSTEM EQUIPMENT - EXPLANATION OF GENERAL TERMS AND CALCULATION METHODS