What are the commonly used cable laying methods? Posted by : admin / Posted on : Jun 24， 2021

High-voltage cable laying method:
1. Ducted type: refers to laying high-voltage cables in prefabricated pipelines (such as concrete pipes). Manholes are required at regular intervals to introduce and connect cables. For example, the cables are single-core cables to reduce power loss and To prevent the decrease of the conveying capacity and cause the cable to overheat, the pipe should be non-magnetic or non-conductive.
2, tunnel type: refers to the cable laying on the bridge frame or support in the special cable tunnel. A large number of cables can be laid in the cable tunnel, which has good heat dissipation and is convenient for maintenance and repair.
3. Directly buried: refers to the high-voltage cables directly laid underground. The buried depth is required to be no less than 0.7 meters, and no less than 1 meter when crossing farmland. It should be less than 1.2 meters in places prone to heavy pressure, and the cables should be laid evenly above and below. 100mm thick fine sand or soft soil, covered with a protective layer such as concrete slab, covering 50mm on both sides of the cable; in cold areas, it should be buried below the frozen soil layer.

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