I don't know if you have noticed that in the sampling inspection of wire and cable market products, there are fewer and fewer cables with substandard resistance, and more problems appear in the unqualified mechanical properties of the aging insulating sheath or the unqualified thermal extension and combustion performance of the cross-linked cable.
Wire and cable problem status
We all know that the resistance of the cable is to ensure that the resistance value of the cable is in line with the national standard, but it is only to ensure that the core resistance does not exceed the national standard, and the others are not guaranteed. The reality is that it is not enough for a cable to only hold on to resistance. The era of wire and cable resistance protection has passed, and the full warranty inspection is more practical. This year, Cable Treasure has also encountered many procurement customers who require "national standard full warranty inspection". What tests need to be done for the full warranty inspection of national standard cables?The full warranty inspection of wires and cables is to ensure that there are no defects in the quality of wires and cables, and to ensure the normal operation and service life of the equipment. Conventional full test includes: conductor resistance, insulation resistance, thickness of the thinnest point of insulation, tensile strength change rate, elongation at break after aging, tensile strength after aging, elongation at break before aging, tensile strength before aging, withstand voltage test, insulation thickness, elongation change rate, external dimensions, printed mark. 
It is a very important job to ensure the quality of wires and cables and improve the stability and reliability of equipment. For wire and cable manufacturers and users, understanding the significance of wire and cable full warranty inspection and related standards also plays an important role in improving the quality of wire and cable and reducing safety risks.