SIST EN 62479:2010

SLOVENSKI STANDARD
SIST EN 62479:2010
01-december-2010
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SIST EN 50371:2002
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Assessment of the compliance of low power electronic and electrical equipment with the
basic restrictions related to human exposure to electromagnetic fields (10 MHz to 300
GHz) (IEC 62479:2010, modified)
Beurteilung der Übereinstimmung von elektronischen und elektrischen Geräten kleiner
Leistung mit den Basisgrenzwerten für die Sicherheit von Personen in
elektromagnetischen Feldern (10 MHz bis 300 GHz) (IEC 62479:2010, modifiziert)
Evaluation de la conformité des appareils électriques et électroniques de faible
puissance aux restrictions de base concernant l'exposition des personnes aux champs
électromagnétiques (10 MHz à 300 GHz) (CEI 62479:2010, modifiée)
Ta slovenski standard je istoveten z: EN 62479:2010
ICS:
13.280 Varstvo pred sevanjem Radiation protection
SIST EN 62479:2010 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62479:2010

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SIST EN 62479:2010

EUROPEAN STANDARD
EN 62479

NORME EUROPÉENNE
September 2010
EUROPÄISCHE NORM

ICS 17.220.20; 35.020 Supersedes EN 50371:2002


English version


Assessment of the compliance of low power electronic and electrical
equipment with the basic restrictions related to human exposure to
electromagnetic fields (10 MHz to 300 GHz)
(IEC 62479:2010, modified)


Evaluation de la conformité des appareils Beurteilung der Übereinstimmung von
électriques et électroniques de faible elektronischen und elektrischen Geräten
puissance aux restrictions de base kleiner Leistung mit den Basisgrenzwerten
concernant l'exposition des personnes für die Sicherheit von Personen
aux champs électromagnétiques in elektromagnetischen Feldern
(10 MHz à 300 GHz) (10 MHz bis 300 GHz)
(CEI 62479:2010, modifiée) (IEC 62479:2010, modifiziert)




This European Standard was approved by CENELEC on 2010-09-01. 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 Central Secretariat 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 Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62479:2010 E

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SIST EN 62479:2010
EN 62479:2010 - 2 -
Foreword
The text of document 106/198/FDIS, future edition 1 of IEC 62479, prepared by IEC TC 106, Methods for
the assessment of electric, magnetic and electromagnetic fields associated with human exposure, was
submitted to the IEC-CENELEC parallel vote.
A draft amendment to the European Standard was prepared by the Technical Committee CENELEC
TC 106X, Electromagnetic fields in the human environment. It was submitted to the Unique Acceptance
Procedure.
The combined texts were approved by CENELEC as EN 62479 on 2010-09-01.
This European Standard supersedes EN 50371:2002.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-09-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-09-01
Annex ZA has been added by CENELEC.
__________

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SIST EN 62479:2010
- 3 - EN 62479:2010
Endorsement notice
The text of the International Standard IEC 62479:2010 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
ISO/IEC 17025:2005 NOTE  Harmonized as EN ISO/IEC 17025:2005 (not modified).

COMMON MODIFICATIONS

2 Normative references
Add:
Council Recommendation 1999/519/EC of 12 July 1999 on the limitation of exposure of the general public
to electromagnetic fields (0 Hz to 300 GHz), Official Journal L 199 of 30 July 1999.

3 Terms and definitions
3.4
basic restriction
Add the following note:
NOTE Basic restrictions can be found in Annex II (Table 1) of the Council Recommendation 1999/519/EC.

4 Conformity assessment methods
4.1 General considerations
Add before the first paragraph:
The electronic and electro technical apparatus shall comply with the basic restriction as specified in
Annex II of Council Recommendation 1999/519/EC.

NOTE 1 The Council Recommendation 1999/519/EC is based on the ICNIRP guidelines [1] with some additional restrictions.
NOTE 2 The time averaging in the EU-Recommendation applies.
__________

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SIST EN 62479:2010
EN 62479:2010 - 4 -
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 62311 (mod) - Assessment of electronic and electrical EN 62311 -
equipment related to human exposure
restrictions for electromagnetic fields
(0 Hz - 300 GHz)

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SIST EN 62479:2010
IEC 62479
®
Edition 1.0 2010-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Assesment of the compliance of low-power electronic and electrical equipment
with the basic restrictions related to human exposure to electromagnetic fields
(10 MHz to 300 GHz)

Évaluation de la conformité des appareils électriques et électroniques de faible
puissance aux restrictions de base concernant l’exposition des personnes aux
champs électromagnétiques (10 MHz à 300 GHz)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 17.220.20; 35.020 ISBN 978-2-88910-989-0
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62479:2010
– 2 – 62479 © IEC:2010
CONTENTS
FOREWORD.3
1 Scope.5
2 Normative references .5
3 Terms and definitions .5
4 Conformity assessment methods .8
4.1 General considerations.8
4.2 Low-power exclusion level (P ) .9
max
4.3 Exposure to multiple transmitting sources .10
5 EMF assessment report.10
5.1 General considerations.10
5.2 Equipment-related information.10
6 Use of measurement uncertainty in the evaluation of compliance to limits .10
Annex A (informative) Derivation of low-power exclusion level from ICNIRP and IEEE
exposure limits .12
Annex B (informative) Derivation of alternative low-power exclusion levels for wireless
devices used close to the body .14
Annex C (informative) Compliance requirement for a pulsed field.17
Annex D (informative) Topics from ISO/IEC 17025 relevant for EMF assessment
reports .18
Bibliography.19

Figure 1 – Routes to show compliance with low-power exclusion level.9

Table A.1 – Example values of SAR-based P for some cases described by ICNIRP,
max
IEEE Std C95.1-1999 and IEEE Std C95.1-2005.13
Table B.1 – Some typical frequency bands of portable wireless devices and
corresponding low-power exclusion levels P ′ predicted using Equations (B.1)
max
through (B.9) .16

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SIST EN 62479:2010
62479 © IEC:2010 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ASSESMENT OF THE COMPLIANCE OF LOW-POWER
ELECTRONIC AND ELECTRICAL EQUIPMENT
WITH THE BASIC RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS
(10 MHz to 300 GHz)


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62479 has been prepared by IEC technical committee 106:
Methods for the assessment of electric, magnetic and electromagnetic fields associated with
human exposure.
The text of this standard is based on the following documents:
FDIS Report on voting
106/198/FDIS 106/205/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN 62479:2010
– 4 – 62479 © IEC:2010
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 62479:2010
62479 © IEC:2010 – 5 –
ASSESMENT OF THE COMPLIANCE OF LOW-POWER
ELECTRONIC AND ELECTRICAL EQUIPMENT
WITH THE BASIC RESTRICTIONS RELATED TO HUMAN
EXPOSURE TO ELECTROMAGNETIC FIELDS
(10 MHz to 300 GHz)



1 Scope
This International Standard provides simple conformity assessment methods for low-power
electronic and electrical equipment to an exposure limit relevant to electromagnetic fields
(EMF). If such equipment cannot be shown to comply with the applicable EMF exposure
requirements using the methods included in this standard for EMF assessment, then other
standards, including IEC 62311 or other (EMF) product standards, may be used for conformity
assessment.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 62311, Assessment of electronic and electrical equipment related to human exposure
restrictions for electromagnetic fields (0 Hz – 300 GHz)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
available antenna power
the maximum power, averaged over a time interval equal to the averaging time, supplied to
the antenna feed line that can be theoretically delivered by a source having an impedance of
positive real part to a directly connected load when the impedance of the load is widely varied
NOTE 1 The available antenna power is obtained when the resistance of the load is equal to that of the source
and its reactance is equal in magnitude but of opposite sign. However, other scenarios are possible e.g. if the PA
monitors the current rather than the actual power, a changing antenna impedance (when DUT is operated close to
the body) might actually cause a higher output power than the matched load. Then, a push-pull analysis with varied
realistic loads (according to antenna impedance in the vicinity of the body) should be performed.
NOTE 2 In some cases, conditions such as overheating or overvoltage prevent the available antenna power from
being obtained.
NOTE 3 Time average shall be taken during continuous or maximum duty cycle transmission at maximum power
to the extent possible for a given technology.
1)
NOTE 4 Adapted from IEC 60050-702:1992 [11] , 702-07-10.
NOTE 5 Antenna feed line is defined by IEC 60050-712:1992 [12], 712-06-01.
—————————
1)
Figures in square brackets refer to the Bibliography.

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SIST EN 62479:2010
– 6 – 62479 © IEC:2010
3.2
average total radiated power
the time average of the total radiated power over a time interval equal to the averaging time.
This time average is taken during continuous or maximum duty cycle transmission at
maximum power to the extent possible for a given technology
NOTE If the user is in the reactive near field of the antenna, the presence of the user may result in a change in
the total radiated power due to a change in the antenna impedance. In this case, the average total radiated power
must be the maximum possible power in the presence of the user.
3.3
averaging time
t
avg
the appropriate time over which exposure is averaged for purposes of determining compliance
with exposure limits
3.4
basic restriction
restriction(s) on exposure to time-varying electric, magnetic, and electromagnetic fields that are based
directly on established health effects
NOTE Depending upon the frequency of the field, the physical quantities used to specify these restrictions are
current density, specific absorption rate (SAR), and power density.
3.5
conformity assessment
demonstration that specified requirements relating to a product, process, system, person or
body are fulfilled
NOTE The subject field of conformity assessment includes activities such as testing, inspection and certification,
as well as the accreditation of conformity assessment bodies.
[ISO 17000:2004 [14], definition 2.1, modified]
3.6
information technology equipment
ITE
any equipment which has a primary function of either (or a combination of) entry, storage,
display, retrieval, transmission, processing, switching, or control, of data and of
telecommunication messages and which may be equipped with one or more terminal ports
typically operated for information transfer
EXAMPLE Types of ITE include data processing equipment, office machines, electronic business equipment and
telecommunication equipment.
3.7
low-power equipment
equipment where the available antenna power and/or the average total radiated power is less
than or equal to the low-power exclusion level
3.8
low-power exclusion level
P
max
specified condition on device output power, which may also depend on other variables such
as frequency and distance of radiating source from persons, such that the exposure level
produced by the source will not exceed a specific basic restriction. If the device output power
is less than P , then the device is deemed to comply with the basic restrictions
max

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SIST EN 62479:2010
62479 © IEC:2010 – 7 –
3.9
multimedia equipment
MME
equipment that has the function of information technology equipment (ITE), audio, video or
broadcast-receiving equipment, interaction and/or communication with the user of the product
or combinations of these functions
2)
[CISPR 32____ [9], definition 3.1.17]
3.10
peak radiated power
the maximum instantaneous radiated power
3.11
power density
the power passing through an element of surface normal to the direction of propagation of
energy of an electromagnetic wave divided by the area of the element
[IEC 60050-705:1995 [13], 705-02-03, power flux density]
NOTE Power density is expressed in watts per square meter.
3.12
pulse repetition frequency
PRF
the number of pulses transmitted per unit time
3.13
specific absorption
SA
energy absorbed by (dissipated in) an incremental mass contained in a volume element of
biological tissue when exposure to a radio frequency electromagnetic field occurs
NOTE Specific absorption is expressed in joules per kilogram.
3.14
specific absorption rate
SAR
power absorbed by (dissipated in) an incremental mass contained in a volume element of
biological tissue when exposure to a radio frequency electromagnetic field occurs
NOTE SAR is expressed in watts per kilogram.
3.15
total radiated power
the total power emitted by the equipment in the form of electromagnetic fields in the absence
of any nearby objects (e.g. a human body)
NOTE For transmitters that use antennas, the total radiated power is independent of antenna gain.
3.16
unintentional radiator
non-intentional radiator
electrical or electronic equipment that radiates radio frequency (RF) energy, even though the
emission is not a deliberate or necessary part of its function
EXAMPLE Examples of unintentional radiators include all types of ITE without antenna and/or wireless radio
transmission function.
—————————
2)
 In preparation.

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SIST EN 62479:2010
– 8 – 62479 © IEC:2010
4 Conformity assessment methods
4.1 General considerations
Compliance of electromagnetic emissions from electronic and electrical equipment with the
basic restrictions usually is determined by measurements and, in some cases, calculation of
the exposure level. If the electrical power used by or radiated by the equipment is sufficiently
low, the electromagnetic fields emitted will be incapable of producing exposures that exceed
the basic restrictions. This standard provides simple EMF assessment procedures for this low
power equipment.
Any relevant compliance assessment procedure which is consistent with the state of the art,
reproducible and gives valid results can be used.
For transmitters intended for use with more than one antenna configuration option, the
combination of transmitter and antenna(s) which generates the highest available antenna
power and/or average total radiated power shall be assessed.
and described as follows, can be used to demonstrate
Four routes, as illustrated in Figure 1
compliance with this standard:
A Typical usage, installation and the physical characteristics of equipment make it
inherently compliant with the applicable EMF exposure levels such as those listed in the
bibliography. This low-power equipment includes unintentional (or non-intentional)
radiators, for example incandescent light bulbs and audio/visual (A/V) equipment,
information technology equipment (ITE) and multimedia equipment (MME) that does not
contain radio transmitters.
NOTE Equipment is described as A/V equipment, ITE or MME if its main use is playback/recording of music,
voice or images, or processing of digital information.
B The input power level to electrical or electronic components that are capable of radiating
electromagnetic energy in the relevant frequency range is so low that the available
antenna power and/or the average total radiated power cannot exceed the low-power
exclusion level defined in 4.2.
C The available antenna power and/or the average total radiated power are limited by
product standards for transmitters to levels below the low-power exclusion level defined
in 4.2.
D Measurements or calculations show that the available antenna power and/or the average
total radiated power are below the low-power exclusion level defined in 4.2.
If none of these routes can be used, then the equipment is deemed to be out of the scope of
this standard and EMF assessment for conformity assessment purposes shall be made
according to other standards, such as IEC 62311 or other EMF product standards.

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SIST EN 62479:2010
62479 © IEC:2010 – 9 –
Start
Determine applicable
low-power exclusion
level (see 4.2)
Choose
compliance
route
C D
A B
Inherently
Input power Allowed Measurement
compliant output power or calculation
Further assessment
Meets
NO
needed. Use EMF
low-power
product standards
exclusion
or IEC 62311
level?
YES
Equipment
complies with EMF
basic restrictions
IEC  1246/10

Figure 1 – Routes to show compliance with low-power exclusion level
4.2 Low-power exclusion level (P )
max
Low-power electronic and electrical equipment is deemed to comply with the provisions of this
standard if it can be demonstrated using routes B, C or D that the available antenna power
and/or the average total radiated power is less than or equal to the applicable low-power

exclusion level P .
max
Annex A contains example values for P derived from existing exposure limits listed in the
max
bibliography, such as the ICNIRP guidelines [1], IEEE Std C95.1-1999 [2], and IEEE Std
C95.1-2005 [3] .
For wireless devices operated close to a person’s body with available antenna powers and/or
average total radiated powers higher than the P values given in Annex A, the alternative
max
P values (called P ′), described in Annex B can also be used.
max max
NOTE In order to be able to use the alternative P values (P ′), the device under assessment shall fit within
max max
the scope of applicability of P ′ as defined in Annex B. If P ′ as defined in Annex B is not applicable to a
max max
particular product, then the example values P for the corresponding exposure limits described in Annex A
max
should be used.
For low power equipment using pulsed signals, other limits may apply in addition to those
considered in Annex A and Annex B. Both ICNIRP guidelines [1] and IEEE standards [2] , [3 ]
have specific restrictions on exposures to pulsed fields, and the requirements of those
standards with respect to exposure to pulses shall be met. Annex C discusses this topic
further.

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SIST EN 62479:2010
– 10 – 62479 © IEC:2010
4.3 Exposure to multiple transmitting sources
If an equipment under test (EUT) is equipped with multiple intentional radiators, the overall
conformity assessment might require more than just the assessment of conformity of each
one of the radiators separately. The effect of multiple intentional radiators should be
considered in the conformity assessment process.
Technical Report IEC 62630 [8] provides generic guidance on how to assess the EMFs
generated by multiple intentional radiators.
5 EMF assessment report
5.1 General considerations
The means and rationale for determining compliance with the low-power exclusion level shall
be recorded, as shall all information needed for performing repeatable assessments, tests,
calculations, or measurements yielding results within the required calibration and uncertainty
limits.
Further guidelines on the assessment report can be found in 5.10 of ISO/IEC 17025:2005.
Annex D is a sample of what is contained in ISO/IEC 17025 as it might pertain to EMF
assessment reports.
5.2 Equipment-related information
Relevant information concerning the settings of controls and the intended usage of the
equipment shall be recorded. In addition, the following should be included in the assessment
report:
• description of the equipment including type designation, serial number, etc.;
• any instructions needed for a user to properly operate the equipment such that exposures
will be compliant with the basic restrictions;
• provisions for ensuring that the equipment cannot be modified to change its power so that
it could exceed the low-power exclusion level.
6 Use of measurement uncertainty in the evaluation of compliance to limits
The equipment is deemed to fulfil the requirements of this standard if the assessment results
are less than or equal to the limit and if the estimated uncertainty of the assessment results is
less than the maximum measurement uncertainty specified for the assessment method(s) that
are applied. This means that for each assessment route shown in Figure 1, separate
uncertainty estimations must be performed as applicable for the route used. The uncertainty
of the assessment method shall be determined by calculating the expa
...