爆炸性气体环境用电气设备 第13部分:正压保护的房间或建筑物的结构和使用

[中文适用范围]： 本报告定义了在可能存在易燃气体或蒸气的房间或建筑物中使用易引起点火的电气设备的条件，并防止这些气体或蒸气进入房间。 [外文原描述]： Applies to rooms and buildings containing electrical apparatus and protected by internal overpressure against the ingress of explosive external atmosphere. Includes recommendations for the construction, equipping and operation of such rooms or buildings and their associated parts. Gives tests to show the conformity with these recommendations and indicates the marking to be placed on the rooms or buildings. This publication has the status of a technical report.