洁净厂房夹层电击防护措施应用

摘要

Due to multiple pipelines and narrow space, the electric shock risk of equipment layer of clean workshop is rather high. From the aspect of protection against electric shock, several suggestions are proposed as follows: ①For fix installed lightings, Class Ⅰ luminaire shall be generally adopted. Both the SELV power and 220 V power can be adopted for power supply. When SELV is adopted, power type selection and wiring system shall meet with the requirements of relevant specifications. ②For portable lamp, portable electric equipment and stationary electric equipment, full consideration shall be given to the risks of electric shock and suitable protection measures against electric shock like SELV, electrical separation and RCD shall be adopted.%洁净厂房设备夹层内管线多，空间狭小，电击危险性较高，从电击防护的角度提出一些建议：①固定安装的照明灯具一般采用Ⅰ类灯具，可采用特低电压（SELV），也可以采用220 V供电，当采用SELV供电时电源选型及布线系统应满足相关规范要求；②手提行灯、移动式用电设备、固定用电设备应充分考虑其电击危险性，选取适当的电击防护措施，如特低电压（SELV）、电气分隔、 RCD附加保护措施等。