1. Recognize the certification mark. When purchasing, be sure to check whether there is a "CCC" certification mark on the certificate of conformity, and whether the model specifications, rated voltage, length, date of manufacture, certification number, inspection, implementation standards, factory name, factory location and other signs are clear.

Second, pay attention to packaging. When choosing the power cords produced by ul power cord manufacturers, pay attention to the packaging must be exquisite, the printing must be clear, and the model specifications, factory name, and factory location must be complete.

Three, check the appearance of the product. When purchasing products from ul power cord manufacturers, pay attention to the appearance to be smooth and round, uniform color and good feel. In the case of rubber-type power line conductors, the sheath and insulation can be burned with cigarette butts, and the surface is completely undamaged.

Fourth, check the power line conductor. The power line conductor must have a certain gloss and moderate flexibility, and the structure size of the power line conductor must meet the requirements of national standards.

Fifth, check the length. When buying, don't be greedy for cheap price, choose 90m or 80m, or even the length of the power cord conductor, the length must meet the 100 ± 0.5m standard requirements.

The ul power line conductor produced by Ul power line manufacturers is composed of power line conductor, insulation layer, shielding layer and protective layer.

(1) Power line conductor

The power line conductor is the conductive part of the power line conductor. It is used to transport electrical energy and is the main part of the power line conductor.

(2) Insulation layer

Insulation layer is to electrically isolate the power line conductor from the ground and power line conductors of different phases from each other to ensure power transmission. It is an indispensable part of the power line conductor structure.

(3) Shielding layer

Power line conductors of 15KV and above generally have power line conductor shields and insulation shields.

(4) Protective layer

The protective layer is used to protect the power line conductors from external impurities and moisture, and to prevent external power from directly damaging the power cable.

The above is how ul power cord manufacturers share how to choose ul power cord. I hope it can help everyone.