News

Check category

Low-smoke and halogen-free cables: What is the identification method of low-smoke and halogen-free cables?

Low-smoke and halogen-free cables: What is the identification method of low-smoke and halogen-free cables?

What is the identification method for low-smoke and halogen-free cables?

1. The method of identifying the product name of low-smoke and halogen-free cables. Low-smoke, halogen-free, flame-retardant polyethylene insulated wire and cable, low-smoke, halogen-free, flame-retardant polyethylene insulated, low-smoke, halogen-free, flame-retardant polyethylene sheathed power cable. The general situation of imitation is a little different, such as polyethylene insulated low-smoke halogen-free sheathed flame-retardant power cable and so on.

2. The skin burn method is the identification method of low-smoke and halogen-free cables. When ironing the insulating layer with an electric iron, there should be no obvious dents. If there is a large recess, it indicates that the material or process used in the insulating layer is defective. Or use a lighter to grill, under normal circumstances it should not be easy to ignite. After long-term burning, the cable insulation layer is still relatively intact, there is no thick smoke and pungent smell, and the diameter is enlarged. If it is easy to ignite, it can be confirmed that the cable insulation layer does not use low-smoke halogen-free materials. If there is heavy smoke, the insulating layer is made of halogen-containing materials. If the insulation surface falls off severely and the diameter does not increase significantly after burning for a long time, it means that the appropriate radiation cross-linking process has not been carried out.

3. The hot water immersion method is the identification research method of low-smoke and halogen-free cables. The core or network cable is soaked in hot water at 90°C. In normal development, the insulation resistance will not drop rapidly and stay above 0.1MΩ/Km. If the insulation resistance drops rapidly and the impact cannot even be lower than 0.009MΩ/Km, it means that none of the companies have selected the appropriate radiation cross-linking process for analysis and treatment. (Polyethylene products or cross-linked polyethylene insulating materials cannot be identified by this method, and risk identification can be performed using the method described in Article 2 above).

4. Density comparison of identification methods for low-smoke and halogen-free cables.

Hongsheng Wire and Cable Co., Ltd. specializes in the production of power cables, copper-core wires, wires, cables, and copper-core cables. The products are of good quality and guaranteed. Welcome to negotiate!

Scan it

QR code

Tell

0576-82670088

Weekdays 8:00-17:00

Copyright © 2021 Hongsheng Wire & Cable Co., Ltd. Right Reserved 浙ICP备11048157号 Powered by: 300.cn