Our commonly used cross-linked polyethylenepower cables will cause prolonged combustion due to the flame when a short circuit occurs or there is an open flame nearby, especially when multiple cables are laid together. The impact of fire is more serious. Therefore, it is very important to take reasonable cable fire protection measures to prevent the spread of cable fire. Generally speaking, fire protection measures for cables are as follows:
1. All cables laid within 2 meters on both sides of the cable intermediate joints or branch joints laid on the cable trench, cable tunnel or cable trough frame of the cable layer shall be painted several times with special fire-resistant paint for the cable. The thickness of the coating film specified by the manufacturer. For any cables that pass through floors and walls, fire-resistant coatings should also be painted within 2 meters on both sides of the pass.
2. For any perforation that passes through the floor or wall, the hole should be blocked with fire-proof plugging around the cable. For the perforation of laying multiple cables.
3. The perforation of underground cables that may leak water can be blocked with special organic plugging materials for cables.
4. In order to prevent the nearby fires from threatening the multiple cables on the cable rack, the cables can be laid directly on the fireproof cable trough.
5. In order to prevent ACSR Conductor fire from affecting the cables laid on the upper cable rack, a layer of cable fire barrier can be laid on the upper cable, and then the cable can be laid on it.
6. The cable fireproof tape can be wrapped on the cable, which plays the same role as the cable fireproof coating. In order to ensure the effectiveness of cable fire protection measures, after the construction of the cable fire protection measures, the painting or installation of the fire protection coating should be checked regularly, and the place where the fire protection coating has fallen off or damaged should be repaired in time to ensure that it has normal fire protection. Features.