Understand the electrical performance inspection of USB C panel mount cable

The electrical performance test mainly includes conductor DC resistance, insulation resistance, finished product voltage test and voltage test between insulated wire cores. Each operation here is very important.

The conductor resistance reflects the electrical transmission performance of the USB C panel mount cable, which will affect the temperature, life, voltage drop and operating safety of the USB C panel mount cable during power-on operation. It mainly tests the conductor material and cross-sectional area. If it is good or the cross-sectional area is seriously insufficient, the DC resistance of the conductor may be seriously exceeded. The laying of this USB C panel mount cable in the line may increase the loss of current when passing through the line, causing the cable conductor itself to heat up, so it may be This leads to the aging and cracking of the insulation of the covered conductors, and then causes the power supply line to leak, short-circuit, and even cause fire, thus endangering the safety of people and property. The standard has strict regulations on the DC resistance value of the conductors of cables of different specifications, so it should not be greater than the value specified in the standard.

Insulation resistance, finished voltage test and voltage test between insulated wires are all tests of the electrical insulation performance of the insulation layer and sheath layer of the USB C panel mount cable. Insulation resistance can test the resistance of the insulating material between the two conductors. Play the role of insulation protection. The voltage test of the finished product and the voltage test between the insulated cores not only require the cable to have sufficient insulation capacity, but also require that the insulation or sheath material is uniform without impurities, the thickness is uniform enough, and there should be no invisible trachoma, pinholes, etc. on the surface, otherwise it is easy to cause Local breakdown during withstand voltage test.