BS EN 62822-2:2016
$167.15
Electric welding equipment. Assessment of restrictions related to human exposure to electromagnetic fields (0 Hz to 300 GHz) – Arc welding equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2016 | 44 |
This part of IEC 62822 applies to equipment for arc welding and allied processes designed for occupational use by professionals and for use by laymen.
Typical allied processes are electric arc cutting and arc spraying.
This standard specifies procedures for the assessment of human exposure to magnetic fields produced by arc welding. It covers non-thermal biological effects in the frequency range from 0 Hz to 10 MHz and defines standardized test scenarios.
The general term “field” is used throughout this document for “magnetic field”.
For the assessment of exposure to electric fields and thermal effects, the methods specified in the Generic Standard IEC 62311 apply.
This standard does not define methods for workplace assessment regarding the risks arising from electromagnetic fields (EMF). However, the EMF data that results from the application of this standard can be used to assist in workplace assessment.
Other standards may apply to products covered by this standard. In particular this standard cannot be used to demonstrate electromagnetic compatibility with other equipment. It does not specify any product safety requirements other than those specifically related to human exposure to electromagnetic fields.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 8 | FOREWORD |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms, definitions and abbreviations 3.1 Terms and definitions |
| 12 | 3.2 Quantities and units 3.3 Constants 4 Requirements 5 Assessment methods 5.1 General considerations 5.1.1 Time averaging 5.1.2 Spatial averaging of external field values |
| 13 | 5.1.3 Spatial averaging of intracorporeal values 5.1.4 Equipment with pulsed or non-sinusoidal welding current Tables Table 1 – Phase angles of weighting function or summation function |
| 15 | Figures Figure 1 – Piecewise linear and approximated limit amplitudes Figure 2 – Piecewise linear and approximated summation function phase angles |
| 16 | 5.1.5 Considerations for spectral analysis Figure 3 – Spectral synthesis for the validation of the analysis |
| 17 | 5.1.6 Uncertainty of assessment Figure 4 – Equivalent waveform for non-repetitive signals |
| 18 | 5.2 Measurement of external field levels 5.2.1 General 5.2.2 Measurement equipment 5.3 Calculation of external field levels 5.3.1 General 5.3.2 Source model and calculation equation |
| 19 | 5.4 Calculation of intracorporeal levels 5.4.1 General 5.4.2 Source model 5.4.3 Body model for analytical calculations Figure 5 – Conducting disk in a uniform magnetic flux density |
| 20 | Figure 6 – Electrical conductivity for homogeneous body models Table 2 – Radii and coupling factors for 2D disk models |
| 21 | 5.4.4 Anatomical body models for numerical calculations |
| 22 | 6 Assessment conditions 6.1 Assessment configurations 6.1.1 General 6.1.2 Exposure of the head |
| 23 | Figure 7 – Field measurement at head position Figure 8 – Field calculation at head position |
| 24 | Figure 9 – Analytical calculation of intracorporeal metrics for the head |
| 25 | 6.1.3 Exposure of the trunk Figure 10 – Numerical calculation of intracorporeal metrics for the head Figure 11 – Field measurement at trunk position |
| 26 | Figure 12 – Field calculation at trunk position Figure 13 – Analytical calculation of intracorporeal metrics for the trunk |
| 27 | Figure 14 – Numerical calculation of intracorporeal metrics for the trunk |
| 28 | 6.1.4 Exposure of limbs Figure 15 – Field measurement at limb positions, hand and thigh Figure 16 – Field calculation at limb positions, hand and thigh |
| 29 | Figure 17 – Analytical calculation of intracorporeal metrics for hand and thigh |
| 30 | 6.2 Welding current conditions 6.2.1 General Figure 18 – Numerical calculation of intracorporeal metrics for hand and thigh |
| 31 | 6.2.2 Single operating mode |
| 32 | 6.2.3 Multiple operating modes 6.2.4 Worst case power source capability 6.2.5 Current ripple 7 EMF data sheet and assessment report |
| 34 | Annex A (informative)Example for EMF data sheet structure |
| 35 | Annex B (informative)Assessment example for maximum power-source capability B.1 Equipment description B.2 Welding current measurement and spectral analysis Figure B.1 – Example 1 – Current ripple |
| 36 | B.3 Assessment of non-thermal effects Figure B.2 – Example 1 – Maximum power-source capability |
| 37 | Figure B.3 – Example 1 – EI calculation element |
| 38 | Figure B.4 – Example 1 – EI calculation summary |
| 39 | Figure B.5 – Example 1 – EMF data sheet |
| 40 | Annex C (informative)Summation with approximated and piecewise linear limit values Figure C.1 – EI comparison with approximated and piecewise linear values |
| 41 | Annex D (informative)Coupling factors for various distances and disk radii Table D.1 – Coupling factors for various distances and disk radii |
| 42 | Bibliography |
