IEC/TR 60479-5-2007 电流对人和家畜的影响.第5部分:生理影响的接触电压阈值

标准号：IEC/TR 60479-5-2007
中文标准名称：电流对人和家畜的影响.第5部分:生理影响的接触电压阈值
英文标准名称：Effects of current on human beings and livestock - Part 5: Touch voltage threshold values for physiological effects
标准类型：K09
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：K09
引用标准：IEC 60050-195;IEC/TS 60479-1-2005;IEC 60990
适用范围：IEC/TR 60479-5, which is a technical report, provides touch voltage-duration combinationthresholds based on analysis of information concerning body impedances and currentthresholds of physiological effects, as given in IEC/TS 60479-1. Such threshold combinationsrelate to specific environmental and contact conditions that determine body impedance forparticular current pathways.This technical report considers only(i) 50/60 Hz sinusoidal alternating voltage having no other frequency components and nosignificant direct voltage component, and(ii) direct voltage with no significant alternating component.This technical report provides thresholds as a result of calculations based on values fromIEC/TS 60479-1, with uncertainties. Therefore thresholds proposed in this report alsocorrespond to values with uncertainties.This technical report does not consider immersion of body parts and medical application.Touch voltage-duration combination thresholds are for use by technical committees asguidance for the determination of limits for touch voltage and touch voltage durations invarious environmental situations.Determination of limits needs to be based on risk assessment. Factors that are part of riskassessment include voltage threshold values (taking into account contact area, skin moisturecondition, body current pathway) provided by this technical report, as well as other factors notcovered such as:– reduction of the likelihood of contact (by obstacles, barriers, warnings, placing out ofreach, training, etc.); or– reduction of touch voltage compared to the fault voltage (such as by equipotentialbonding); or– additional resistance in series with the human body (such as gloves, shoes, carpet, etc.).