IEC 62110:2009

Electric and magnetic field levels generated by AC power systems - Measurement procedures with regard to public exposure

IEC 62110:2009 establishes measurement procedures for electric and magnetic field levels generated by AC power systems to evaluate the exposure levels of the human body to these fields. This standard is not applicable to DC power transmission systems. IEC 62110:2009 is applicable to public exposure in the domestic environment and in areas accessible to the public. It specifies fundamental procedures for the measurement of fields, and, with regard to human exposure, for obtaining a field value that corresponds to a spatial average over the entire human body. IEC 62110:2009 is not applicable to occupational exposure associated with, for example, the operation and/or maintenance of the power systems. Such exposure may occur when working inside a distribution or transmission substation, a power plant, in a manhole or a tunnel for underground cables, or on an overhead line tower or pole. The contents of the corrigendum of January 2015 have been included in this copy.

Champs électriques et magnétiques générés par les systèmes d'alimentation à courant alternatif - Procédures de mesure des niveaux d'exposition du public

La CEI 62110:2009 établit des procédures de mesure des niveaux de champs électriques et magnétiques générés par des systèmes d'alimentation à courant alternatif, afin d'évaluer les niveaux d'exposition du corps humain à ces champs. La présente norme ne s'applique pas aux systèmes de transport à courant continu. La CEI 62110:2009 s'applique à l'exposition humaine dans l'environnement domestique et dans les lieux qui sont accessibles augrand public. Elle spécifie les procédures fondamentales destinées à mesurer des champs, et concernant l'exposition humaine, à obtenir une valeur de champ correspondant à la moyenne spatiale sur l'ensemble du corps humain. La CEI 62110:2009 s'applique pas à l'exposition en milieu professionnel associée, par exemple, à l'exploitation et/ou la maintenance des systèmes d'alimentation. Une telle exposition peut avoir lieu lorsqu'on travaille dans un poste électrique de distribution ou de transport, une centrale, dans un puis d'accès ou un tunnel pour câbles souterrains, ou sur un poteau ou un pylône de ligne aérienne. Le contenu du corrigendum de janvier 2015 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 30-Aug-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: TC 106 - Methods for the assessment of electric, magnetic and electromagnetic fields associated with human exposure
• Drafting Committee: WG 2 - TC 106/WG 2
• Current Stage: PPUB - Publication issued
• Start Date: 15-Sep-2009
• Completion Date: 31-Aug-2009

Relations

• Corrected By: IEC 62110:2009/COR1:2015 - Corrigendum 1 - Electric and magnetic field levels generated by AC power systems - Measurement procedures with regard to public exposure
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62110 ®
Edition 1.0 2009-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric and magnetic field levels generated by AC power systems –
Measurement procedures with regard to public exposure

Champs électriques et magnétiques générés par les systèmes d’alimentation à
courant alternatif – Procédures de mesure des niveaux d’exposition du public

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IEC 62110 ®
Edition 1.0 2009-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric and magnetic field levels generated by AC power systems –
Measurement procedures with regard to public exposure

Champs électriques et magnétiques générés par les systèmes d’alimentation à
courant alternatif – Procédures de mesure des niveaux d’exposition du public

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XA
ICS 17.220.20; 29.240 ISBN 2-8318-1059-3
– 2 – 62110  IEC:2009
CONTENTS
FOREWORD. 5
INTRODUCTION . 7
1 Scope . 8
2 Normative reference . 8
3 Terms and definitions . 8
4 Measurement principle for electric and magnetic fields . 9
4.1 General . 9
4.2 Instruments . 9
4.3 Harmonic content . 10
4.4 Record of measurement result . 10
4.5 Measurement considerations . 11
4.5.1 Field orientation . 11
4.5.2 Measurement locations . 12
4.5.3 Perturbing effects of an operator in electric field measurement . 12
4.5.4 Effects from other sources in magnetic field measurement . 12
4.5.5 Humidity condition in electric field measurement . 12
5 Fundamental measurement procedures for electric and magnetic fields . 12
5.1 General procedure . 12
5.2 Single-point measurement . 13
5.3 Three-point measurement . 13
5.4 Five-point measurement . 14
6 Measurement procedures for finding the maximum exposure level to an electric
field . 15
6.1 Overhead lines . 15
6.2 Underground cables . 15
6.3 Substations and power system equipment . 15
7 Measurement procedures for finding the maximum exposure level to a magnetic
field . 16
7.1 Overhead lines . 16
7.2 Underground cables . 16
7.3 Substations and power system equipment . 16
Annex A (informative) Characteristics of electric fields generated by AC overhead
lines . 18
Annex B (informative) Characteristics of magnetic fields generated by AC power
systems . 30
Annex C (informative) Concept of the three-point measurement with regard to the
average exposure level . 42
Annex D (informative) Example of a reporting form for field measurement . 47
Bibliography . 50

Figure 1 – Heights of the three-point measurement . 13
Figure 2 – Five-point measurement . 14
Figure A.1 – Linear charge distribution above ground . 19
Figure A.2 – General n-phase system with ground . 20
Figure A.3 – Electric field levels under an overhead transmission line . 22

62110  IEC:2009 – 3 –
Figure A.4 – Electric field levels under an overhead transmission line with bundled
conductors . 22
Figure A.5 – Electric field levels and non-uniformity under a 77 kV overhead
transmission line – Effect of heights of conductors . 24
Figure A.6 – Electric field levels and non-uniformity under a 500 kV overhead
transmission line – Effects of the heights of conductors . 25
Figure A.7 – Electric field levels under a 77 kV overhead transmission line – Effect of
separation between conductors . 26
Figure A.8 – Electric field levels and non-uniformity under a 500 kV overhead
transmission line – Effect of separation between conductors . 27
Figure A.9 – Vertical and horizontal components of electric field levels under a 77 kV
overhead transmission line . 27
Figure A.10 – Vertical and horizontal components of electric field levels under a
500 kV overhead transmission line . 28
Figure A.11 – Electric field contour of a 25 kV overhead line . 28
Figure A.12 – Electric field profile along the wall of a building and at 1 m above ground
level . 29
Figure B.1 – Magnetic field levels under a 77 kV overhead transmission line . 32
Figure B.2 – Magnetic field levels under a 500 kV overhead transmission line . 33
Figure B.3 – Magnetic field levels and non-uniformity under a 77 kV overhead
transmission line – Effect of heights of conductors . 34
Figure B.4 – Magnetic field levels and non-uniformity under a 500 kV overhead
transmission line – Effect of heights of conductors . 35
Figure B.5 – Magnetic field levels and non-uniformity under a 77 kV overhead
transmission line – Effect of separation between conductors . 36
Figure B.6 – Magnetic field levels under a 500 kV overhead transmission line – Effect
of separation between conductors . 37
Figure B.7 – Values of semi-major and semi-minor components (r.m.s.) of magnetic
field levels under a 77 kV overhead transmission line . 38
Figure B.8 – Values of semi-major and semi-minor components (r.m.s.) of magnetic
field levels under a 500 kV overhead transmission line . 38
Figure B.9 – Magnetic field levels and non-uniformity under an overhead distribution
line (6 600 V / 100 V) . 39
Figure B.10 – Magnetic field levels and non-uniformity above underground cables –
Effect of buried depth . 40
Figure B.11 – Magnetic field levels and non-uniformity above underground cables –
Effect of separation between conductors . 40
Figure B.12 – Measured magnetic field levels and non-uniformity around a 6 600 V
pad-mounted transformer . 41
Figure B.13 – Measured mag
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