1、 IEC/TR 60479-5 Edition 1.0 2007-11 TECHNICAL REPORT RAPPORT TECHNIQUE Effects of current on human beings and livestock Part 5: Touch voltage threshold values for physiological effects Effets du courant sur lhomme et les animaux domestiques Partie 5: Valeurs des seuils de tension de contact pour les
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16、 questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TR 60479-5 Edition 1.0 2007-11 TECHNICAL REPORT RAPPORT TECHNIQUE Effects of current on human beings and livestock Part 5: Touch voltage threshold values for physiologica
17、l effects Effets du courant sur lhomme et les animaux domestiques Partie 5: Valeurs des seuils de tension de contact pour les effets physiologiquesINTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 13.200; 29.020 PRICE CODE CODE PRIX ISBN 2-8318-9346-1 2 TR 6
18、0479-5 IEC:2007 CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references .8 3 Terms and definitions .9 4 Conditions and threshold values.9 4.1 General .9 4.2 Physiological effects of touch current 10 4.3 Body impedance14 4.4 Impedance external to the body.15 4.5 Other factors affecting vo
19、ltage thresholds .15 4.6 Touch voltage thresholds as a function of duration 16 4.7 Touch voltage thresholds for long durations 17 5 Touch voltage thresholds Presentation of voltage-time curves.19 Annex A (informative) Body impedance30 Annex B (informative) Touch voltage Explanation of a method to de
20、rive estimates of touch voltages thresholds for strong muscular reactions and ventricular fibrillation from the body impedance tables and current limits in IEC/TS 60479-136 Annex C (informative) Determination of voltage thresholds under selected conditions53 Annex D (informative) Limits of applicabi
21、lity.54 Bibliography56 Figure 1 Physiological thresholds for a.c. (50/60-Hz) and d.c. flowing hand-to-hand (transversely) through the human body.11 Figure 2 Physiological thresholds for a.c. (50/60-Hz) and d.c. flowing from both hands to both feet (longitudinally) through the human body 12 Figure 3
22、Physiological thresholds for a.c. (50/60-Hz) and d.c. flowing from hand-to seat (longitudinal) through the human body 13 Figure 4 Flow chart to be used for the selection of the appropriate figure providing the maximum duration for each touch voltage threshold17 Figure 5 Conventional time/voltage zon
23、es of effects of a.c. current (50/60 Hz) on a person for saltwater-wet condition and large contact area.20 Figure 6 Conventional time/voltage zones of effects of a.c. current (50/60 Hz) on a person for saltwater-wet condition and medium contact area 21 Figure 7 Conventional time/voltage zones of eff
24、ects of a.c. current (50/60 Hz) on a person for saltwater-wet condition and small contact area 21 Figure 8 Conventional time/voltage zones of effects of a.c. current (50/60 Hz) on a person for water-wet condition and large contact area 22 Figure 9 Conventional time/voltage zones of effects of a.c. c
25、urrent (50/60 Hz) on a person for water-wet condition and medium contact area22 Figure 10 Conventional time/voltage zones of effects of a.c. current (50/60 Hz) on a person for water-wet condition and small contact area23 TR 60479-5 IEC:2007 3 Figure 11 Conventional time/voltage zones of effects of a
26、.c. current (50/60 Hz) on a person for dry condition and large contact area 23 Figure 12 Conventional time/voltage zones of effects of a.c. current (50/60 Hz) on a person for dry condition and medium contact area 24 Figure 13 Conventional time/voltage zones of effects of a.c. current (50/60 Hz) on a
27、 person for dry condition and small contact area 24 Figure 14 Conventional time/voltage zones of effects of d.c. current on a person for saltwater-wet condition and large contact area .25 Figure 15 Conventional time/voltage zones of effects of d.c. current on a person for saltwater-wet condition and
28、 medium contact area .25 Figure 16 Conventional time/voltage zones of effects of d.c. current on a person for saltwater-wet condition and small contact area .26 Figure 17 Conventional time/voltage zones of effects of d.c. current on a person for water-wet condition and large contact area .26 Figure
29、18 Conventional time/voltage zones of effects of d.c. current on a person for water-wet condition and medium contact area.27 Figure 19 Conventional time/voltage zones of effects of d.c. current on a person for water-wet condition and small contact area.27 Figure 20 Conventional time/voltage zones of
30、 effects of d.c. current on a person for dry condition and large contact area .28 Figure 21 Conventional time/voltage zones of effects of d.c. current on a person for dry condition and medium contact area.28 Figure 22 Conventional time/voltage zones of effects of d.c. current on a person for dry con
31、dition and small contact area.29 Figure A.1 Model for hand-to-hand contact 33 Figure A.2 Model for both-hands-to-feet contact 34 Figure A.3 Model for hand-to-seat contact .35 Figure B.1 Estimation of the variation of the skin resistance as a function of electric shock duration 38 Figure B.2 Example
32、of extrapolation of the hand-to-hand body impedance at 0 V in dry conditions with large contact area.42 Figure B.3 Percentage of internal resistance of the human body for the part of the body concerned 43 Figure B.4 Example of diagram for the estimation of the strong muscular reactions and ventricul
33、ar fibrillation threshold for a.c. current hand-to-hand current path, large contact area and dry condition for a current duration of 10 ms 47 Table 1 Current threshold values for each condition and for long duration14 Table 2 Tables providing minimum touch voltage threshold for a.c. and d.c. corresp
34、onding to startle reaction, strong muscular reaction and ventricular fibrillation (see Table 1 notes).18 Table 2a Startle reaction for alternating current 50/60 Hz 18 Table 2b Strong muscular reaction for alternating current 50/60 Hz .18 Table 2c Ventricular fibrillation for alternating current 50/6
35、0 Hz .18 Table 2d Startle reaction for direct current .19 Table 2e Strong muscular reaction for direct current19 Table 2f Ventricular fibrillation for direct current.19 Table A.1 Total body impedance in ohms for dry, hand-to-hand, 50/60 Hz a.c., large surface area contact (IEC/TS 60479-1 Table 1) 31
36、 4 TR 60479-5 IEC:2007 Table A.2 Total body impedance in ohms for dry, hand-to-hand, d.c., large surface area contact (IEC/TS 60479-1 Table 10).31 Table B.1 Nature and number of the parameters influencing the human body impedance which are taken into consideration by IEC/TS 60479-137 Table B.2 Addit
37、ional parameters influencing the human body impedance.37 Table B.3 Maximum a.c. current threshold corresponding to current flow duration for each current effect considered and for a hand-to-hand current path46 Table B.4 Maximum a.c. current threshold corresponding to current flow duration for each c
38、urrent effect considered for both-hands-to-feet current path47 Table B.5 Maximum a.c. current threshold corresponding to current flow duration for each current effect considered for a hand-to-seat current path48 Table B.6 Maximum d.c. current threshold corresponding to current flow duration for each
39、 current effect considered for the hand-to-hand current path51 Table B.7 Maximum d.c. current threshold corresponding to current flow duration for each current effect considered for the both-hands-to-feet current path52 Table B.8 Maximum d.c. current threshold corresponding to current flow duration
40、for each current effect considered for the hand-to-seat current path.52 Table C.1 Example of touch voltage thresholds for a.c. and d.c. corresponding to muscular effects and ventricular fibrillation for the above specified environmental situations 53 TR 60479-5 IEC:2007 5 INTERNATIONAL ELECTROTECHNI
41、CAL COMMISSION _ EFFECTS OF CURRENT ON HUMAN BEINGS AND LIVESTOCK Part 5: Touch voltage threshold values for physiological effects FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC
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