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

[中文适用范围]： IEC/TR 60479-5 是一份技术报告，根据 IEC/TS 60479-1 中给出的有关身体阻抗和生理效应电流阈值的信息分析，提供了触摸电压-持续时间组合阈值。这种阈值组合与确定特定电流路径的身体阻抗的特定环境和接触条件有关。本技术报告仅考虑(i) 50/60 Hz 正弦交流电压，没有其他频率分量，也没有显着的直流电压分量，以及(ii) 没有显着交流分量的直流电压。本技术报告提供的阈值是根据 IEC/TS 60479-1 中的值计算得出的结果，但存在不确定性。因此，本报告中提出的阈值也对应于具有不确定性的值。本技术报告不考虑身体部位的浸泡和医疗应用。技术委员会使用接触电压-持续时间组合阈值作为确定各种环境情况下接触电压和接触电压持续时间限制的指南。限制的确定需要基于风险评估。风险评估的因素包括本技术报告提供的电压阈值（考虑接触面积、皮肤湿度状况、身体电流路径），以及未涵盖的其他因素，例如： – 接触可能性的降低（通过障碍物、屏障、警告、放置在接触不到的地方、培训等）；或 – 与故障电压相比减少接触电压（例如通过等电位连接）；或 – 与人体串联的附加电阻（如手套、鞋子、地毯等）。 [外文原描述]： This Technical Report provides touch voltage-duration combination thresholds based on analysis of information concerning body impedances and current thresholds of physiological effects, as given in IEC/TS 60479-1. Such threshold combinations relate to specific environmental and contact conditions that determine body impedance for particular current pathways. This technical report considers only (i) 50/60 Hz sinusoidal alternating voltage having no other frequency components and no significant 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 from IEC/TS 60479-1, with uncertainties. Therefore thresholds proposed in this report also correspond to values with uncertainties. Touch voltage-duration combination thresholds are for use by technical committees as guidance for the determination of limits for touch voltage and touch voltage durations in various environmental situations. The contents of the corrigendum of July 2013 have been included in this copy.