IEC 61472:2013描述了一种用于在72.5 kV和800kV之间的最大电压下计算带电作业的最小接近距离的方法。本标准涉及不同电位下零件和/或工人之间的系统过电压和工作空气距离或工具绝缘。通过本标准中描述的方法计算的所需耐压和最小接近距离应考虑 -如果工人接受过在带电工作区工作的培训并熟练操作； -如果预期过电压不超过为确定所需最小接近距离而选择的值； -如果瞬态过电压是确定过电压； -如果工具绝缘表面上不存在连续的湿气膜或可测量的污染物；-如果在工作地点10公里范围内没有看到或听到闪电； -如果考虑到工具的导电部件的影响；和 -如果考虑海拔、间隙中的绝缘体等对电强度的影响。对于上述以外的条件，最小接近距离的评估可能需要特定的数据，这些数据是通过其他计算得出的，或者是从对实际情况的额外实验室调查中获得的。该第三版取消并取代了2004年发布的IEC 61472第二版。它构成技术修订。第二版的重大变化如下: -澄清范围； -审查定义； -澄清确定是否允许带电作业的方法以及最小接近距离的计算；-修改用于计算最小接近距离的基本方程；和 -引入表1用于高度校正因子简化ka。

IEC 61472:2013 describes a method for calculating the minimum approach distances for live working, at maximum voltages between 72,5 kV and 800 kV. This standard addresses system overvoltages and the working air distances or tool insulation between parts and/or workers at different electric potentials. The required withstand voltage and minimum approach distances calculated by the method described in this standard are evaluated taking into consideration
- if the workers are trained for, and skilled in, working in the live working zone;
- if the anticipated overvoltages do not exceed the value selected for the determination of the required minimum approach distance;
- if transient overvoltages are the determining overvoltages;
- if tool insulation has no continuous film of moisture or measurable contamination present on the surface;
- if no lightning is seen or heard within 10 km of the work site;
- if allowance is made for the effect of conducting components of tools; and
- if the effect of altitude, insulators in the gap, etc, on the electric strength is taken into consideration. For conditions other than the above, the evaluation of the minimum approach distances may require specific data, derived by other calculation or obtained from additional laboratory investigations on the actual situation. This third edition cancels and replaces the second edition of IEC 61472 published in 2004. It constitutes a technical revision. Significant changes with regard to the second edition are:
- the clarification of the scope;
- the review of the definitions;
- the clarification of the methodology of determining whether live working is permissible and the calculation of the minimum approach distances;
- the modification of the basic equation for calculation of the minimum approach distance; and
- the introduction of Table 1 for altitude correction factor simplification k_a.