The buried power cable sleeve of the substation is woven with high-purity alkali-free glass fiber and coated with imported silicone resin and vulcanized. Very safe and environmentally friendly, it is a new type of high-voltage power cable protective sleeve. It is mainly used to guide and protect the cable when laying the cable buried in the ground, extending the service life of the cable.
The urban power grid is transferred from overhead lines to underground cables, and its laying methods mainly include pipes, cable trenches, and cable tunnels. Traditional pipes usually use steel pipes, cement asbestos pipes, and ordinary PVC pipes. Among them, the steel pipe has poor corrosion resistance and requires special treatment to prevent eddy currents, which is expensive. Asbestos pipes need to be reinforced with concrete on the outside due to their low strength. At the same time, they use prefabricated concrete brackets, which are heavy in weight, inconvenient to transport, difficult to lay the pipes, and rough pipe walls and unsatisfactory joint technology often cause the cable working well to be unable to open the distance. Correspondingly increased investment; in addition, cable laying, maintenance, and replacement are not very convenient, and the cable heat dissipation is poor; asbestos pipes also contain carcinogenic factors, which do not meet environmental protection requirements. Ordinary PVC pipes have low strength and brittleness. Like asbestos pipes, they still need to be reinforced with external concrete; their thermal and electrical properties are poor, and they cannot withstand the high temperature generated by the short circuit of the cable overload.
Compared with traditional asbestos pipes, cement pipes and steel pipes, the use of GWH cable protection sleeve has heat insulation and flame retardant, wear resistance, tear resistance, high temperature resistance, corrosion resistance, good insulation performance, and a surface with a Layered silicon surface, good gloss, UV resistance, oxidation resistance, and bad weather resistance. It is the first choice for the protection of underground cables in substations!
