People pay more and more attention to environmental protection, as an important carrier of power transmission, wire and cable environmental requirements are also increasingly concerned. In the process of landing the "double carbon" goal and the new power system construction goal, the selection of wire and cable, but also need to fully understand the environmental performance of wire and cable.

What are the main environmental requirements of wire and cable?

1, heavy metal content: In order to protect human health, the content of lead, cadmium, barium and other heavy metal compounds in wire and cable should be limited. Some large electric companies have formulated relevant regulations, requiring that the content of eight heavy metals in the PVC wire and cable used should not be greater than the specified value.

2, low smoke and hydrogen chloride: When ordinary wire and cable burn, it will release thick black smoke and a large number of HCL gas, which not only causes pollution to the surrounding environment, but also causes obstruction and damage to the escape crowd. Therefore, environmentally friendly wire and cable should have the characteristics of low smoke and low hydrogen chloride.

3, low toxicity or WU toxicity: for household appliances, medical appliances and cables used on children's electric toys that may be in contact with food and blood products, in addition to requiring lead-free heavy metals, wu toxicity or low toxicity is also required. This means that the material used for manufacturing wire and cable should be wu toxic to avoid harm to the environment and human body.

4, material requirements: In order to meet the requirements of environmental protection, wire and cable materials should also be wu toxic. This includes the insulation layer, sheath layer and filler of the cable. wu toxic wire and cable manufacturing must use wu toxic plasticizer and other materials. The requirements of this PVC material are higher than those of lead-free heavy metal materials, and the price is naturally more expensive.

5, flame retardant performance: wire and cable flame retardant performance is also an important aspect of environmental protection requirements. Flame retardant wire and cable can reduce the spread of fire in the case of fire, reduce the fire to the surrounding environment and personnel.

6, rated voltage: the rated voltage of wire and cable is also an important environmental protection requirement. A high voltage rating means that the cable is able to transmit more current and power, thus reducing energy loss and waste. At the same time, the high voltage rating also requires the cable material to be more environmentally friendly.

In order to ensure that the environmental requirements of wire and cable are met, a series of test methods need to be used for detection. This includes combustion tests, toxicity tests, heavy metal content tests, etc., to ensure that wires and cables comply with relevant standards and regulations.

What are the environmental indicators of wire and cable?

1. Environmental protection cable features: does not contain halogen, does not contain lead, cadmium and other heavy metals, does not pollute the environment.

2. Combustion performance of environmental protection cable: flame retardant (single vertical combustion) < 60S, transmittance of 60%·min.

3. Toxicity index of environmental protection cable: ≤3.

5. Combustion smoke density of environmental protection cable: in line with GB/T 17651-1998 (equivalent to IEC1043) standard requirements, transmittance ≥ 60%.

6. Halogen acid content of environmental protection cable: in line with GB/T 17650-1998 (equivalent to IEC 754-2) standard requirements, PH ≥4.3, conductivity ≤10 μs /mm.

7. The allowable working temperature of conductor of environmental protection cable: should not exceed 70, 90, 125℃ respectively.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.