Many users and installations are faced with the problem of cheap and efficient data transmission between buildings in the park environment. The choice of routing, transmission distance and application environment will all affect the choice of cable medium. Incorrect or inappropriate choice will result in a shortened period of wiring investment, and reinstallation will also … Read more
1. Chemical corrosion of laying environment If the accumulated water in the cable trench or the directly buried soil contains corrosive components, such as sulfuric acid or nitric acid, the cable surface will be in contact with these corrosive substances for a long time, and severe chemical corrosion will occur. If the cable sheath is … Read more
In the actual parallel use of cables, there are more single-core cables in parallel. During the actual parallel use of single-core cables, due to the influence of the laying method, the actual current carrying capacity may not meet the actual load needs, and it may appear in actual use. Overload phenomenon. In fact, when 6 … Read more
1. Termite damage Termites are the enemy of underground power cables, especially in Southeast Asia and the hot and humid areas of southern my country, where termites often erode the plastic sheath of cables. When termites encounter a cable, in addition to biting, they also secrete formic acid, which severely corrodes the cable insulation and … Read more
The use of non-environmental protection cables is strictly prohibited in developed countries, and China also attaches great importance to this field. Relevant Chinese laws and regulations clearly require important buildings to prohibit the use of polyvinyl chloride wires and cables, and halogen-free and low-smoke cross-linked PVC wires and cables must be used to avoid a … Read more
How to prevent wires and cables from catching fire due to overload of wires? During the operation of the wire and cable, it will generate heat due to the existence of resistance. The resistance of the wire is generally very small, and its heating power can be expressed by the formula q=I^2R. q=I^2R indicates: for … Read more
Requirements of General rubber plastic wire: 1. Scope of application: connection and internal installation of power, lighting, electrical equipment, instrumentation and telecommunication equipment with AC rated voltage of 450/750V low voltage cable and below. 2. Laying occasions and methods: indoor open laying and communication channels, along the wall or overhead laying in tunnels; outdoor overhead … Read more
Generic cabling is one of the key links of information network system. In order to ensure the high-speed and stable operation of information network system, it is particularly important to select high-quality and high-performance cables. The cable selection should be based on the system requirements, technical performance, investment estimates and other factors, but in the … Read more
First, fire prevention, fire resistance is very superior In order to ensure the normal power supply of the cable in flame, that is, to keep the cable structure stable under fire conditions, a layer of coating with fire resistance and expansion performance was added in the cable structure design. The volume expansion of the coating … Read more
The fan Angle needs to be adjusted by the yaw driver according to the wind direction. Power, control and communication cables bend along the horizontal axis or rotate along the vertical axis. This makes the torsional flexure more demanding and requires more attention. Although there are currently no standards or regulations regarding torsional flexure, end … Read more