EN 61786-1:2014

Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Part 1: Requirements for measuring instruments

IEC 61786-1:2013 provides guidance for measuring instruments used to measure the field strength of quasi-static magnetic and electric fields that have a frequency content in the range 1 Hz to 100 kHz and with DC magnetic fields to evaluate the exposure levels of the human body to these fields. Sources of fields include devices that operate at power frequencies and produce power frequency and power frequency harmonic fields, as well as devices that produce fields within the frequency range of this document, including devices that produce static fields, and the earth's static magnetic field. The magnitude ranges covered by this standard are 0,1 μT to 200 mT in AC (1 μT to 10 T in DC) and 1 V/m to 50 kV/m for magnetic fields and electric fields, respectively. When measurements outside this range are performed, most of the provisions of this standard will still apply, but special attention should be paid to specified uncertainty and calibration procedures. The first editions of IEC 61786-1 and IEC 61786-2 replace IEC 61786:1998. Part 1 deals with measuring instruments, and Part 2 deals with measurement procedures. The content of the standard was revised in order to give up-to-date and practical information to the user.

Messung von magnetischen Gleichfeldern und von elektrischen und magnetischen Wechselfeldern von 1 Hz bis 100 kHz im Hinblick auf die Exposition von Personen - Teil 1: Anforderungen an Messgeräte

Mesure de champs magnétiques continus et de champs magnétiques et électriques alternatifs dans la plage de fréquences de 1 Hz à 100 kHz dans leur rapport à l'exposition humaine - Partie 1: Exigences applicables aux instruments de mesure

L'IEC 61786-1:2013 comporte des lignes directrices concernant les instruments de mesure utilisés pour la mesure des valeurs des champs magnétiques et électriques quasi-statiques avec des composantes fréquentielles comprises entre 1 Hz et 100 kHz ainsi que des champs magnétiques continus, permettant d'évaluer les niveaux d'exposition du corps humain à ces champs. Parmi les sources de champs figurent des dispositifs qui fonctionnent aux fréquences industrielles et qui produisent des champs à ces fréquences et aux fréquences harmoniques, ainsi que des dispositifs qui produisent des champs dans la plage de fréquence de ce document, incluant les dispositifs qui produisent des champs statiques, et le champ magnétique statique terrestre. Les plages d'amplitudes couvertes par la présente norme vont respectivement de 0,1 μT à 200 mT en alternatif (1 μT à 10 T en continu) et de 1 V/m à 50 kV/m pour les champs magnétiques et les champs électriques. Lorsque des mesures sont effectuées en dehors de cette plage, la plupart des dispositions de la présente norme restent applicables, mais il convient de prêter une attention toute particulière à l'incertitude et à la procédure d'étalonnage spécifiées. Les premières éditions de la IEC 61786-1 et la IEC 61786-2 remplacent la CEI 61786:1998. La Partie 1 concerne les instruments de mesure, et la Partie 2 concerne les procédures de mesure. Le contenu de la norme a été révisé afin de donner à l'utilisateur des informations à jour et pratiques.

Meritve enosmernih magnetnih polj, izmeničnih magnetnih in električnih polj v območju od 1 Hz do 100 kHz z vidika izpostavljenosti ljudi - Zahteve za instrumente (IEC 61786-1:2013)

Standard EN IEC 61786-1 podaja smernice za merilne inštrumente za merjenje jakosti polja pri navidezno statičnih magnetnih in električnih poljih, katerih frekvenčni delež je v razponu od 1 Hz do 100 kHz, in pri enosmernih magnetnih poljih, s čimer se ovrednoti ravni izpostavljenosti človeškega telesa tem poljem. Viri polj zajemajo tako naprave, ki delujejo na obratovalnih frekvencah ter proizvajajo obratovalne frekvence in harmonična polja obratovalnih frekvenc, kot tudi naprave, ki polja proizvajajo v frekvenčnem razponu tega dokumenta, vključno z napravami, ki proizvajajo statična polja, in zemeljskim statičnim magnetnim poljem. Razponi velikosti, ki jih zajema ta standard, so pri izmeničnih električnih poljih od 0,1 μT do 200 mT (1 μT do 10 T pri enosmernih) in 1 V/m do 50 kV/m pri magnetnih poljih. Če je meritev zunaj tega razpona, se večina določil iz tega standarda še vedno uporablja, vendar je treba posebno pozornost posvetiti določenim postopkom negotovosti in kalibriranja. Ta standard namreč – določa terminologijo, – določa zahteve za specifikacije za merilnike polja, – določa metode kalibriranja, – določa zahteve za negotovost instrumentov, – opisuje splošne značilnosti polj, – opisuje načela delovanja instrumentov. Določa tudi vire negotovosti med kalibriranjem. Ta standard z vidika merjenja električnega polja upošteva le merjenje nespremenjene jakosti električnega polja v točki na prostem (tj. električno polje pred uvedbo merilnika in meritelja) ali nad prevodno površino. Ta horizontalni standard je namenjen predvsem tehničnim odborom za pripravo standardov v skladu z načeli vodila IEC Guide 108. Ena od pristojnosti tehničnih odborov je, da med pripravo publikacij uporabljajo horizontalne standarde, kadar je to primerno. Vsebina tega horizontalnega standarda se ne uporablja, razen če je izrecno navedena ali zajeta v ustreznih publikacijah

General Information

• Status: Published
• Publication Date: 27-Mar-2014
• Withdrawal Date: 15-Jan-2017
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• Technical Committee: CLC/TC 106X - Electromagnetic fields in the human environment
• Drafting Committee: IEC/TC 106 - IEC_TC_106
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 28-Mar-2014
• Completion Date: 28-Mar-2014
• Ref Project: SIST EN 61786-1:2014 - Measurement of DC magnetic fields, AC magnetic and electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Requirements for instruments

Relations

• Amended By: EN 61786-1:2014/A1:2024 - Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to 100 kHz with regard to exposure of human beings - Part 1: Requirements for measuring instruments
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2014
0HULWYHHQRVPHUQLKPDJQHWQLKSROML]PHQLþQLKPDJQHWQLKLQHOHNWULþQLKSROMY
REPRþMXRG+]GRN+]]YLGLNDL]SRVWDYOMHQRVWLOMXGL=DKWHYH]D
LQVWUXPHQWH,(&
Measurement of DC magnetic fields, AC magnetic and electric fields from 1 Hz to 100
kHz with regard to exposure of human beings - Requirements for instruments
/
Mesure de champs magnétiques continus et de champs magnétiques et électriques
alternatifs dans la plage de fréquences de 1 Hz à 100 kHz dans leur rapport à
l'exposition humaine - Exigences applicables aux instruments
Ta slovenski standard je istoveten z: EN 61786-1:2014
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61786-1
NORME EUROPÉENNE
March 2014
EUROPÄISCHE NORM
ICS 17.220.20
English version
Measurement of DC magnetic, AC magnetic and AC electric fields from 1
Hz to 100 kHz with regard to exposure of human beings -
Part 1: Requirements for measuring instruments
(IEC 61786-1:2013)
Mesure de champs magnétiques continus Messung von magnetischen Gleichfeldern
et de champs magnétiques et électriques und von elektrischen und magnetischen
alternatifs dans la plage de fréquences de Wechselfeldern von 1 Hz bis 100 kHz im
1 Hz à 100 kHz dans leur rapport à Hinblick auf die Exposition von Personen -
l'exposition humaine - Teil 1: Anforderungen an Messgeräte
Partie 1: Exigences applicables aux (IEC 61786-1:2013)
instruments de mesure
(CEI 61786-1:2013)
This European Standard was approved by CENELEC on 2014-01-16. 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.

CENELEC
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 61786-1:2014 E
Foreword
The text of document 106/292/FDIS, future edition 1 of IEC 61786-1, 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 and approved by CENELEC as EN 61786-1:2014.
The following dates are fixed:
• latest date by which the document has (dop) 2014-10-16
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-01-16
• latest date by which the national
standards conflicting with the
document have to be withdrawn
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 61786-1:2013 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 62110:2009 NOTE Harmonised as EN 62110:2009 (not modified).
ISO 80000-1:2009 NOTE Harmonised as EN ISO 80000-1:2013 (not modified).
ISO/IEC 17025:2005 NOTE Harmonised as EN ISO/IEC 17025:2005 (not modified).

- 3 - EN 61786-1:2014
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  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 61000-3-2 - Electromagnetic compatibility (EMC) - EN 61000-3-2 -
Part 3-2: Limits - Limits for harmonic current
emissions (equipment input current <= 16 A
per phase)
IEC 61000-4-2 - Electromagnetic compatibility (EMC) - EN 61000-4-2 -
Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity
test
IEC 61000-4-3 - Electromagnetic compatibility (EMC) - EN 61000-4-3 -
Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

IEC 61000-4-4 - Electromagnetic compatibility (EMC) - EN 61000-4-4 -
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-6 - Electromagnetic compatibility (EMC) - EN 61000-4-6 -
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
IEC 61000-4-8 - Electromagnetic compatibility (EMC) - EN 61000-4-8 -
Part 4-8: Testing and measurement
techniques - Power frequency magnetic field
immunity test
CISPR 11 (mod) - Industrial, scientific and medical equipment - EN 55011 -
Radio-frequency disturbance characteristics -
Limits and methods of measurement

ISO/IEC Guide 98-3 - Uncertainty of measurement - - -
Part 3: Guide to the expression of uncertainty
in measurement (GUM:1995)
IEC Guide 108 - Guidelines for ensuring the coherency of IEC - -
publications - Application of horizontal
standards
IEC 61786-1 ®
Edition 1.0 2013-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL STANDARD
NORME HORIZONTALE
Measurement of DC magnetic, AC magnetic and AC electric fields from 1 Hz to

100 kHz with regard to exposure of human beings –

Part 1: Requirements for measuring instruments

Mesure de champs magnétiques continus et de champs magnétiques et

électriques alternatifs dans la plage de fréquences de 1 Hz à 100 kHz dans

leur rapport à l'exposition humaine –

Partie 1: Exigences applicables aux instruments de mesure

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 17.220.20 ISBN 978-2-8322-1298-1

– 2 – 61786-1 © IEC:2013
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
3.1 Meters . 7
3.2 Meter characteristics . 8
3.3 Field characteristics . 9
3.4 Measurements . 10
4 Symbols . 11
5 Instrumentation specifications . 12
5.1 General . 12
5.2 Measurement uncertainty . 12
5.3 Magnitude range . 13
5.4 Pass-band . 13
5.5 Operating temperature and humidity ranges . 13
5.6 Power supplies . 13
5.7 Readability of scale . 14
5.8 Instrument dimensions and choice of probe . 14
5.8.1 General schema . 14
5.8.2 Magnetic field meter . 14
5.8.3 Electric field meter . 15
5.8.4 Support for electric field meter . 15
5.9 Electromagnetic compatibility . 15
5.9.1 Immunity . 15
5.9.2 Emissions . 16
5.10 Crest factor . 17
5.11 Durability . 17
5.12 Weight . 17
5.13 Instrumentation choice . 18
6 Calibration . 18
6.1 General . 18
6.2 Calibration procedure . 18
6.2.1 General . 18
6.2.2 Magnetic field calibration system . 18
6.2.3 Electric field calibration system . 19
6.2.4 Three-axis probes calibration . 19
6.2.5 Calibration values . 19
6.2.6 Calibration uncertainty . 20
6.3 Calibration documentation . 20
7 Verification . 21
Annex A (normative) Calibration methods . 22
Annex B (informative) Example of calibration uncertainty . 33
Annex C (informative) General characteristics of magnetic and electric fields . 35
Annex D (informative) Magnetic flux density meters (magnetic field meters) . 39

61786-1 © IEC:2013 – 3 –
Annex E (informative) Electric field strength meters (electric field meters) . 43
Annex F (informative) Influence of humidity on electric field measurement . 47
Annex G (informative) Units . 49
Bibliography . 50

Figure 1 – Schema of a field meter . 14
Figure 2 – Insulating tripod and offset rod for an electric field probe (photograph RTE) . 15
Figure 3 – Electric field measurement using a hand-held stick (photograph RTE). 15
Figure A.1 – Deviation in percentage departure of calculated axial field [7] . 22
Figure A.2 – Coordinate system and geometry of rectangular loop of many turns of
wire (see Equation (A. 1)) . 23
Figure A.3 – Circular Helmholtz coils .
...