In the safe protection net (SPN) designed, the connection of the frontage control boxes and the center control station is accomplished by the communication net.
在设计的安全防护网络(SPN)中，前端控制箱与中央控制台之间的联系是由通讯网络来完成的。
2
Water-proof adhesive glue should be filled in the inner cavity of junction boxes at wet areas. Connection ends of the parts in hazardous areas shall be added explosion proof daub.