In urban power grid reconstruction projects, cables, especially polyethylene insulated power cables, have been widely used. However, due to the particularity of the cable, there are special requirements for the installation, operation and maintenance of the cable. Cable dampness or water ingress reduces the insulation resistance of the cable, which is an important aspect of the cable line running accident.
Causes and hazards of cable flooding
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Power cable lines are generally laid underground or underwater, and there are also power cable lines laid overhead. Power cable lines are mainly composed of cables, cable intermediate connectors, cable terminations, etc. Some power cable lines also have accessories, such as pressure boxes, pressure and temperature warning devices. Underground power cable lines also include corresponding civil facilities, such as cable trenches, pipes, shafts, tunnels, etc.
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