规定了在由常规230/400 V单相/三相电网供电的建筑物中提供应急电源的方法。适用于可以轻松容忍短暂休息的服务。指定的电源是由柴油发动机或燃气轮机驱动的发电机。规定了该发电厂及其住宿的要求:规定了要提供的应急负荷，以及建筑物内的布线分布；并描述调试和维护安装所需的操作。

Specifies a means of providing an emergency electricity supply in a building served by conventional 230/400 V single-phase/three-phase reticulation. Applies to services where a short break can be readily tolerated. The electricity source specified is a generator driven by a diesel engine or a gas turbine. Sets out requirements for this generating plant and its accommodation: specifies the emergency loads to be supplied, and the wiring distribution within the building; and describes the actions necessary to commission and maintain the installation.