In recent years, the styles and specifications of mine explosion-proof electrical products have been expanding. Due to the continuous and stable demand, China's mining electrical products production has formed a huge manufacturing industry, the competition between peers is becoming increasingly fierce. Explosion-proof sound and light alarm is more and more used, but many people do not know much about installation and wiring. We have a look according to the explosion-proof sound-light alarm manufacturer:
1. Use M6 expansion screw or M6 screw to transmit fire sound according to the site situation. The installation port of the light alarm is to fix the explosion-proof shell of the fire alarm on the wall, and the connecting cable is a rubber cable with an outer diameter of φ6~8mm. Or BNG15×700 explosion-proof flexible pipe connection, explosion-proof sound and light alarm manufacturer prompt can also be used explosion-proof sealing nut lock.
2. Wiring method: loosen the fixing screw of the shell of the fire audible and visual alarm, open the flameproof cavity of the fire audible and visual alarm, and connect the control line to the fire audible and visual alarm according to the wiring diagram. Explosion-proof fire sound and light alarm. The end of the + and - terminal. After connection, cover the explosion-proof cover of the fire audible and visual alarm. The screws for the explosion-proof surface should be tightened evenly. Be careful not to mix wire or other foreign matter on the explosion-proof surface.
3. wiring requirements: explosion-proof sound and light alarm manufacturers require that the insulation resistance between lines, lines and the earth is greater than 20M ω, detection of the single line resistance of the bus circuit is less than 20 ω.