1. Aerial cable: non-insulated, bare metal conductor, in air, the insulator string is fixed in the tower, the air is insulated. Main advantages: low cost. The disadvantage is that the use of land resources (line corridor) is more, affects the appearance of the city.
2. Power cable: the use of insulated metal conductors and the outside world, laying the ground or underground. Its main advantages, the laying of more convenient, less occupation of land resources, does not affect the appearance of the city. The disadvantage is that the cost is too high. Is safe, at present, think, due to the material and manufacturing process, etc., the aerial cable is superior to the safety of the power cable, and the failure rate is much lower than the power cable. In addition, there is a kind of "pipeline insulation car", is in the conductor and the metal shell is filled with gas (or other) as an insulating medium. Higher cost.
Copyright ? 2010 - 2025 zmscable.com All Rights Reserved.
