
Effects of current on human beings and livestock Part 1: General aspects
出版:International Electrotechnical Committee

专家解读视频
For a given current path through the human body, the danger to persons depends mainly on the magnitude and duration of the current flow. However, the time/current zones specified in this publication are, in many cases, not directly applicable in practice for designing measures of protection against electrical shock. The necessary criterion is the admissible limit of touch voltage (i.e. the product of the current through the body called touch current and the body impedance) as a function of time. The relationship between current and voltage is not linear because the impedance of the human body varies with the touch voltage, and data on this relationship is therefore required. The different parts of the humanbody (such as the skin, blood, muscles, other tissues and joints) present to the electric current a certain impedance composed of resistive and capacitive components. The values of body impedance depend on a number of factors and, in particular, on current path, on touch voltage, duration of current flow, frequency, degree of moisture of the skin, surface area of contact, pressure exerted and temperature. The impedance values indicated in this technical specification result from a close examination of the experimental results available from measurements carried out principally on corpses and on some living persons. This technical specification has the status of a basic safety publication in accordance with IEC Guide 104. The contents of the corrigenda of October 2006 and June 2013 have been included in this copy.
NEN NPR IEC/TS 60479-1:2005 - Identical
UNE IEC/TS 60479-1:2007 - Identical
VDE V 0140-479-1:2007 - Identical
JIS TR C0023-1:2002 - Identical
DIN IEC/TS 60479-1 (2007-05) - Identical
DD IEC TS 60479-1:2005 - Identical
NEN NPR 10479-1:1996 - Identical
PD 6519-1:1995 - Equivalent
VDE 0800-1:1989 - Identical
CEI 64 Ed. 1 (1999) - Identical
AS/NZS 60479.1:2010 - Identical
UNE 20572-1:1997 - Identical