Shandong Peninsula Cable Co., Ltd. is a professional Flexible fireproof cable Manufacturer! First of all, identify from the model: the cable model must be equipped with NH, and the finished cable sheath must also be printed with NH letters; Secondly: peel off the finished cable, strip off the core insulation layer, and see if there is a layer of mica tape wrapped on the conductor. If there is, it can be judged that the cable has a certain fire resistance function. To judge the fire resistance performance, it is necessary to specifically detect the quality of mica tape.
The use of wires exceeds the service life, and the connectors and wires are always in danger. Check and patrol once a year, and replace in time when aging is found. " The pithy formula refers to that the power lines used by many families at present were laid when building a house more than 20 years ago or earlier. The wire insulation layer will gradually loose and age after a long time of use, which will cause slight leakage, and in serious cases, short circuit and fire.
In addition, the wires used in the old house are designed to carry small loads, which is not compatible with the requirements of modern household electrification. Under overload conditions, the aging speed of the wire insulation layer is accelerated. If the heat released by the wire core causes the temperature of the insulation layer to exceed 250 degrees Celsius, the wires will catch fire, so the wires must be replaced as soon as possible.
Check the appearance along the wire and see if it turns dark and cracks appear. Both hands are bent and insulated, and the skin is stiff and cracked. Observe the insulation layer along the conductor. If the color of the insulation layer is tarnished, darkened, hardened, cracked, or partially peeled off. When bending the insulated conductor with both hands, the conductor is stiff, even the insulation layer is cracked, the insulation layer falls off, etc., which indicates that the conductor has been aged to varying degrees and severely aged.
Regularly and regularly carry out line safety inspection. For wires, electrical equipment, etc., at least once a year, professional personnel should be invited to conduct a comprehensive and thorough inspection, especially for wires with long service life at the connector. If unsafe conditions such as aging, damage and poor insulation of wires are found, they should be repaired and replaced in a timely manner. To ensure the safety of electricity use.
