guichaocable news: cable grounding fault and precautions-非凡电子娱乐

there are three main reasons for cable grounding fault.

first, the cable manufacturing defects for non qualified products;

second, the operating environment, natural aging, as well as external damage;

third, the installation is not standardized, wiring rough. the root cause of the ground fault is only one --- cable insulation.

china's large ground stations are generally in the west, these places are generally desert, saline and diurnal temperature,

the rodent is more serious, the environment will be very wet. cable laying, cable trench filling requirements are relatively high;

the operating environment of the distributed power cable is not better than that of the above ground, and the cable can bear high temperature,

there are technical personnel to measure and control, the roof temperature can even reach 100-110 c high temperature, fire retardant cable requirements,

and the high temperature has great influence on the insulation breakdown voltage. therefore, the design should consider the following:

1, cable insulation

2, cable moisture, cold and weather resistance

3, the flame retardant performance of the cable

4, cable laying mode

5, cable conductor material (copper core, aluminum alloy core, aluminum core)

6, the cable cross-section specifications