Development of a Voltage Resistance Device for Low Voltage Cables

摘要

Because the cable is laid underground, the space is not occupied, and an underground cable channel can accommodate a plurality of lines, and is favorable for the city street beautiful, so the cable is used more and more widely. With the increasing number of low-voltage cables, cable accident rate is also increasing. This paper expounds the insulation resistance and DC withstand voltage test is not applicable to rubber cables, and pointed out the shortcomings of AC voltage withstand test. In order to solve the problem of low voltage cable to be able to run safely, it is very significant to develop a kind of low voltage cable voltage withstand device.