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Fire protection requirements for installation of cold storage electrical line equipment
When the line design is installed. The power inlet should not be passed directly through the flammable insulation. Instead, a bushing should be placed on the side of the door frame to allow the power inlet to pass through. If it is necessary to pass through the flammable insulation layer, it is necessary to add casing protection, and in the range of 20-50 cm outside the casing, it should not be burned with asbestos mud, glass fiber, frog stone or porcelain clay fused with chlorinated paraffin. Fill the partition with material.
The electrical circuit fixedly installed in the cold storage shall be clearly installed; the lighting fixture shall be of moisture-proof type. It is forbidden to directly wire the switch and install the switch in the warehouse in the flammable insulation layer.
In order to prevent the cold storage door and the internal walkway floor from being frozen or frozen due to low temperature, affecting the operation, the new design is to lay a soft copper in the copper frame under the door frame and the floor of the walkway. Wire rubber resistance wire (anti-freeze electricity), regulated by a pressure regulator, the surface temperature can be controlled at 20 °C. However, if the installation is wrong, leave the power inlet connector outside the wall, and the antifreeze through the rice hull insulation will cause a fire due to overheating of the resistance wire. The correct method of installation is to install the connector box of the power supply in the wall, and the outside of the casing is separated by non-combustible insulation material. The voltage of the antifreeze should not exceed 36V, and the adjustment range of the regulator should be limited to the safe temperature.
For temporary wires for construction, rubber cables must be used and absolutely not allowed to pass through the flammable insulation material. High-power lighting fixtures are not allowed to be in close proximity to combustibles or insulation and must be temporarily secured with a light stand. When the construction is stopped, the power should be cut off.