元太电子

Some merchants say that the resistance is the national standard line, and other aspects are not guaranteed to be tested. Such wires and cables must be carefully selected. Because the wire and cable production process, from the raw materials into the factory to the finished product out of the warehouse, it must pass 28 strict tests (14 national standards required) to ensure that each meter of cable is in line with national standards.

The following is a 28-channel inspection process:

Raw material approach detection
(3 channels)
1. Conductor resistance test

2. Insulation into the factory for routine testing

3. Conductor monofilament diameter measurement

Production inspection
(6 channels)
4. Spark breakdown experiment

5. Outer diameter real-time measurement

6. Insulation thickness detection

7. Insulation eccentricity detection

8. Identification of scratch resistance test

9. Marking clarity detection

Laboratory testing
(10 channels)
10. Finished conductor diameter detection

11. Conductor DC resistance detection

12. Insulation average thickness detection

13. Insulation thinnest point thickness measurement

14.Insulation uniformity measurement

15. Insulation resistance detection

16. Insulation elongation at break detection

17. Insulation tensile strength test

18. Water immersion pressure test

19. Conductor connectivity test

Particularity test
(3 channels)
20. Shielding density detection

21. Flame retardant test

22. Fire resistance test

Finished product inspection
(6 channels)
23. Disk length detection

24. Disk appearance inspection

25. Certification standard test

26. Packaging standard testing

27. Meter length detection

28. Finished product size measurement

When purchasing and purchasing wire and cable, be sure to check if it is a national standard line. Some unscrupulous manufacturers have reduced the cost, cut corners, and maliciously reduced the manufacturing process and testing links. Such products simply cannot meet the requirements of national standards and cannot guarantee safe use.