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BS EN 62226-3-1:2007+A1:2017 Exposure to electric or magnetic fields in the low and intermediate frequency range. Methods for calculating the current density and internal electric field induced in the human body - Exposure to electric fields. Analytical a, 2017
- BS EN 62226-3-1 body copy.pdf [Go to Page]
- iec62226-3-1{ed1.0}b.pdf [Go to Page]
- English [Go to Page]
- CONTENTS
- INTRODUCTION
- 1 Scope
- 2 Exposure to electric field
- 3 General procedure [Go to Page]
- 3.1 Shape factor
- 3.2 Procedure
- 4 Human body models [Go to Page]
- 4.1 General
- 4.2 Surface area
- 4.3 Semi-spheroidal model
- 4.4 Axisymmetrical body model
- 5 Calculation of induced current [Go to Page]
- 5.1 General
- 5.2 Semi-spheroid
- 5.3 Axisymmetrical models
- 5.4 Comparison of the analytical and numerical models
- 6 Influence of electrical parameters [Go to Page]
- 6.1 General
- 6.2 Influence of permittivity
- 6.3 Influence of conductivity
- 6.4 Non-homogeneous conductivity
- 7 Measurement of currents induced by electric fields [Go to Page]
- 7.1 General
- 7.2 Current flowing to the ground
- Annex A (normative) Analytical solutions for a spheroid in a uniform electric field
- Annex B (normative) Human body axisymmetrical model
- Annex C (informative) Child body model
- Annex D (informative) Example of use of this standard
- Annex E (informative) Numerical calculation methods
- Bibliography
- Figures [Go to Page]
- Figure 1 – Illustration of the phenomenon of currents induced by an electric field in a human body standing on the ground
- Figure 2 – Potential lines of the electric field generated by an energised wire in the absence of any objects (all distances in metres)
- Figure 3 – A realistic body model
- Figure 4 – Scheme of the semi-spheroid simulating a human being standing on a zero potential plane
- Figure 5 – Equivalent spheroid radius, R, versus height, L, and for different mass, M
- Figure 6 – The axisymmetrical body model for the reference man (left) and woman (right)
- Figure 7 – Conductive spheroid exposed to electric field
- Figure 8 – Calculation of the shape factor for electric field KE for an spheroid exposed to an unperturbed electric field
- Figure 9 – Current density JS induced by an unperturbed electric field (1 kV/m, 50 Hz) in a spheroid versus parameter L/R (values in µA/m²)
- Figure 10 – Dimensions and mesh of the semi-spheroid
- Figure 11 – Distortion of power frequency electric field lines close to the conductive semi-spheroid
- Figure 12 – Calculated induced current density JA(h) in the body standing in a vertical 50 Hz electric field of 1 kV/m
- Figure 13 – Computation domain
- Figure 14 – Mesh of the man body model and distortion of power frequency electric field lines close to model
- Figure 15 – Distribution of potential lines and 50 Hz electric field magnitude (man model)
- Figure 16 – Computation of induced currents JA along a vertical axis, and distribution of induced currents in the man model at 50 Hz
- Figure 17 – Mesh of the woman body model and distortion of power frequency electric field lines close to model
- Figure 18 – Distribution of potential lines and 50 Hz electric field magnitude (woman model)
- Figure 19 – Computation of induced currents JA along a vertical axis, and distribution of induced currents in the woman model at 50 Hz
- Figure A.1 – Conductive spheroid exposed to electric field
- Figure B.1 – Normalised axisymmetrical models.
- Figure C.1 – Computation of induced currents JZ along a vertical axis, and distribution of induced currents in the 10 years reference child model
- Figure E.1 – Spheroid model
- Figure E.2 – Space potential model
- Figure E.3 – Example of charge simulation method using rings
- Figure E.4 – Superficial charges integral equation method, cutting of the body into N elements
- Figure E.5 – Mesh of the body using finite element method
- Figure E.6 – Impedance method
- Tables [Go to Page]
- Table 1 – Data for reference man and reference woman
- Table 2 – Values of arcsin(e) / e for different values of L/R
- Table 3 – Derived data using spheroid model at 50 Hz
- Table 4 – Electric field EBR required to produce basic restrictions JBR in the neck at 50 Hz
- Table 5 – Comparison of values of the shape factor for electric field KE and corresponding current densities for an unperturbed 50 Hz electric field of 1 kV/m
- Table B.1 – Measures from antropomorphic survey used to construct vertical dimensions of axisymmetrical model [56]
- Table B.2 – Measures from antropomorphic survey used to construct the radial dimensions of axisymmetrical model [56]
- Table B.3 – Normalised model dimensions
- Table B.4 – Axisymmetric model dimensions for reference man and reference woman whose mass and height are defined by ICRP [38] and are given in Table 1
- Table C.1 – Reference values provided by ICRP for male and female children
- Table C.2 – Dimensions of the reference children (in m except SBR in m²)
- Table C.3 – Results of analytical method for the reference children
- Table D.1 – Normalised dimensions of the women model
- Table D.2 – Calculation of the dimensions for a specific person [Go to Page]
