How to Choose Low Voltage Overhead Cable

Choose what type of low voltage overhead cables, we have to consider from two aspects:

First, consider the mechanical properties of insulation - insulation material performance is the key!

1.PVC is softer than polyethylene, with high mechanical strength and good wear resistance. From this point, we should choose PVC as the first choice. GB12527-90 standard provides that the tensile strength of PVC is 12.5MPa. The tensile strength of PVC cable material reaches about 20 MPa. Tensile strength of polyethylene in the standard 10MPa, lower than the PVC, the measured value is only about 14MPa, much lower than the measured value of PVC.

2. In erected routes, PVC cables are less susceptible to wear and fluffing as the cables are dragged on the ground, while polyethylene, on the other hand, tends to be worn and fluffing. In contact with the fittings to withstand the pressure and trunk foliage contact friction, PVC because of high mechanical strength and not easily crushed and worn.

Second, consider the atmospheric aging properties - cross-linked polyethylene molecular structure determines the performance!

The cross-linking process changes the linear state of the polyethylene molecules into a network structure by cross-linking of the cross-linking agent. The macromolecular chains are tightly linked up and down and left and right to enhance the ability of resisting external force destruction, and the light shielding agent and the antioxidant Agents and other effects, we no longer have to worry about cross-linked polyethylene weather resistance to atmospheric aging.