IEC 60364-7-717:2009适用于移动或可运输装置。就本标准而言，术语“单元”是指包含全部或部分电气设备的车辆和/或移动或可运输结构。单元是移动式或可运输式。例子是用于电视和广播、医疗服务、广告、消防、使用特殊信息技术的单位、用于救灾的单位、餐饮单位等。本标准的要求也适用于两个或多个单元连接在一起形成单个电气装置的情况。第二版取消并取代了2001年出版的第一版，构成了技术修订。与上一版相比，主要变化如下:-范围有所改进，提供了更多细节； -第717.41条的内容已根据新版IEC 60364-4-41进行了更新； -引入了关于自动切断电源保护和附加保护的条款； -所有数字均已更新。

IEC 60364-7-717:2009 is applicable to mobile or transportable units. For the purposes of this standard, the term "unit" refers to a vehicle and/or mobile or transportable structure in which all or part of an electrical installation is contained. Units are either of the mobile type or of the transportable type. Examples are units for television and broadcasting, medical services, advertising, fire fighting, using special information technology, units for disaster relief, catering units and the like. The requirements of this standard also apply where two or more units are connected together to form a single electrical installation. This second edition cancels and replaces the first edition published in 2001 and constitutes a technical revision. The main changes with respect to the previous edition are as follows:
- The scope has been improved, providing more detail;
- The content of Clause 717.41 has been updated following the new edition of IEC 60364-4-41;
- Clauses concerning protection by automatic disconnection of the supply and additional protection have been introduced;
- All figures have been updated.