IEC 62822-2:2016

IEC 62822-2 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric welding equipment – Assessment of restrictions related to human
exposure to electromagnetic fields (0 Hz to 300 GHz) –
Part 2: Arc welding equipment
Matériels de soudage électrique – Évaluation des restrictions relatives à
l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) –
Partie 2: Matériels de soudage à l’arc

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IEC 62822-2 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric welding equipment – Assessment of restrictions related to human

exposure to electromagnetic fields (0 Hz to 300 GHz) –

Part 2: Arc welding equipment
Matériels de soudage électrique – Évaluation des restrictions relatives à

l'exposition humaine aux champs électromagnétiques (0 Hz à 300 GHz) –

Partie 2: Matériels de soudage à l’arc

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.160; 25.160.30 ISBN 978-2-8322-3271-2

– 2 – IEC 62822-2:2016 © IEC 2016
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms, definitions and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Quantities and units . 8
3.3 Constants . 8
4 Requirements . 8
5 Assessment methods . 8
5.1 General considerations . 8
5.1.1 Time averaging . 8
5.1.2 Spatial averaging of external field values . 8
5.1.3 Spatial averaging of intracorporeal values . 9
5.1.4 Equipment with pulsed or non-sinusoidal welding current . 9
5.1.5 Considerations for spectral analysis . 12
5.1.6 Uncertainty of assessment . 13
5.2 Measurement of external field levels . 14
5.2.1 General . 14
5.2.2 Measurement equipment . 14
5.3 Calculation of external field levels . 14
5.3.1 General . 14
5.3.2 Source model and calculation equation . 14
5.4 Calculation of intracorporeal levels . 15
5.4.1 General . 15
5.4.2 Source model . 15
5.4.3 Body model for analytical calculations . 15
5.4.4 Anatomical body models for numerical calculations . 17
6 Assessment conditions . 18
6.1 Assessment configurations . 18
6.1.1 General . 18
6.1.2 Exposure of the head . 18
6.1.3 Exposure of the trunk . 21
6.1.4 Exposure of limbs . 24
6.2 Welding current conditions . 26
6.2.1 General . 26
6.2.2 Single operating mode . 27
6.2.3 Multiple operating modes . 28
6.2.4 Worst case power source capability . 28
6.2.5 Current ripple . 28
7 EMF data sheet and assessment report . 28
Annex A (informative) Example for EMF data sheet structure . 30
Annex B (informative) Assessment example for maximum power-source capability . 31
B.1 Equipment description . 31
B.2 Welding current measurement and spectral analysis . 31
B.3 Assessment of non-thermal effects . 32
Annex C (informative) Summation with approximated and piecewise linear limit values . 36

Annex D (informative) Coupling factors for various distances and disk radii . 37
Bibliography . 38

Figure 1 – Piecewise linear and approximated limit amplitudes . 11
Figure 2 – Piecewise linear and approximated summation function phase angles . 11
Figure 3 – Spectral synthesis for the validation of the analysis . 12
Figure 4 – Equivalent waveform for non-repetitive signals . 13
Figure 5 – Conducting disk in a uniform magnetic flux density . 15
Figure 6 – Electrical conductivity for homogeneous body models . 16
Figure 7 – Field measurement at head position . 19
Figure 8 – Field calculation at head position . 19
Figure 9 – Analytical calculation of intracorporeal metrics for the head . 20
Figure 10 – Numerical calculation of intracorporeal metrics for the head . 21
Figure 11 – Field measurement at trunk position . 21
Figure 12 – Field calculation at trunk position . 22
Figure 13 – Analytical calculation of intracorporeal metrics for the trunk . 22
Figure 14 – Numerical calculation of intracorporeal metrics for the trunk . 23
Figure 15 – Field measurement at limb positions, hand and thigh . 24
Figure 16 – Field calculation at limb positions, hand and thigh . 24
Figure 17 – Analytical calculation of intracorporeal metrics for hand and thigh . 25
Figure 18 – Numerical calculation of intracorporeal metrics for hand and thigh . 26
Figure B.1 – Example 1 – Current ripple . 31
Figure B.2 – Example 1 – Maximum power-sour
...