2022.04.26
Several issues need to be paid attention to when installing fire-resistant cables
The refractory cable can still maintain the normal operation of the line for a period of time under burning conditions, that is to say, in the event of a fire, the refractory cable will not burn at once, and it can still maintain normal power supply for a period of time. This characteristic determines that fire-resistant cables play an important role in modern urban and industrial buildings, because once a fire occurs, the power supply circuits of control, monitoring, guidance and alarm systems must maintain normal operation.
2022.04.25
Characteristics and application occasions of several fire-resistant and flame-retardant cables
It can be laid indoors, in tunnels and pipelines, and can withstand certain laying traction, but the cables cannot withstand external forces, and single-core cables are not allowed to be laid in magnetic material pipelines. If it needs to withstand the action of mechanical external force, it should be armored with steel tape.
2022.04.26
Classification, function and application fields of power cables
Power cables are used to transmit and distribute large-scale electrical energy in the mains of the power system, and control cables directly transmit the electrical energy from the distribution points of the power system to the power connection lines of various electrical equipment. In terms of the number of cable cores, according to the requirements of the power grid, the power cable is generally 5 cores, while the control cable is used to transmit control signals.
2022.04.26
What are the reasons for the heating of power cables?
When a power cable passes a certain load current, it will heat up. As the load current increases, the cable surface temperature will be higher. If not treated in time, the consequences can be imagined. For example, PVC (PVC) cable, whose core temperature is 70 degrees, will reduce its surface temperature by 5~10 degrees. Therefore, the surface temperature of the cable is basically safe below 60 degrees. Taking into account power maintenance, the lower the temperature, the better. Next, let's take a look at the reasons why the power cable heats up during operation.
2022.04.26
Discuss the causes of common problems with high-voltage cables
The cable is the bridge between the power supply equipment and the electrical equipment, and plays the role of transmitting electric energy. It is widely used, so faults often occur. The following briefly analyzes the causes of common problems of YJV high-voltage cables. According to the causes of faults, they are roughly divided into the following categories: manufacturer's manufacturing reasons, construction quality reasons, design unit design reasons, external forces Destroy four categories.
2022.04.26
Five aspects to pay attention to when exporting high temperature wire and cable
At present, many domestic high-temperature wire and cable companies have entered foreign markets, but compared with foreign local products, the competitiveness of my country's high-temperature wire and cable products needs to be improved, especially some companies do not understand foreign industry standards and act rashly, leading to the development of enterprises in an awkward situation. As a well-known brand in the high-temperature wire and cable industry, Chuncao has achieved certain achievements in foreign markets. Here are five aspects that need to be paid attention to when exporting high-temperature wires and cables.
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