Regarding the transmission distance of RF cables: The transmission distance of coaxial cables is influenced by various factors, such as the ratio of the inner conductor to the insulation layer, transmission power, transmission rate, as well as receiver performance and bit error rate. Of course, another significant factor here is the type of cable. Different […]
Regarding the transmission distance of twisted-pair cables: A twisted-pair cable consists of a pair of mutually insulated metal wires twisted together. This approach not only resists some electromagnetic interference from the outside world but also reduces mutual interference between multiple pairs of twisted wires. When two insulated wires are twisted together, the interference signal acting […]
Elevator cables are typically composed of conductors, insulation layers, shielding layers, sheaths, and other components, and possess excellent flexibility, wear resistance, and anti-interference capabilities to accommodate the vertical operation requirements of elevators. The conductors of elevator cables are typically made of multi-strand ultra-fine and precisely stranded oxygen-free copper wires, complying with the VDE0295 CLASS 5 […]
The differences between oxygen-free copper, low-oxygen copper, and electrolytic copper are as follows: I. purity: Oxygen-free copper has extremely high purity, typically with an oxygen content of less than 20ppm and minimal impurity content, with copper content reaching over 99.99%. Low-oxygen copper: Its oxygen content is generally around 200 – 400ppm, and its purity is […]
IEC 60754-1/BS6425-1 (Determination of Halogen Gas Content) is a specification for the release concentration of hydrogen chloride (HCl) in IEC and BS standards. Halogens such as fluorine (Fluorine), chlorine (Chlorine), bromine (Bromine), iodine (Iodine), and the radioactive volatile element astatine (Astatine) have high toxicity. According to the experimental procedure, when the combustion furnace is preheated […]
Factors limiting umbilical cables Umbilical cables are widely used in various fields, including underwater production, inspection, surveillance, search and identification, installation and retrieval, cleanup, marine scientific research, global positioning, search and rescue of stricken vessels, rescue of trapped submarines, and relay communication. In different usage environments, factors such as bending, tension winding, wear, and corrosion […]
Classification of shielding: Based on the different objects being shielded, shielding can be divided into active shielding and passive shielding. The target of active shielding is the interference source, limiting the outward diffusion of harmful electromagnetic energy generated by the interference source. The object of passive shielding is a sensitive body, to prevent harmful effects […]
Regarding the usage temperature of Kevlar: It only begins to decompose at a high temperature of 560 ℃, and will not decompose or melt below this temperature. Its continuous use temperature range is extremely wide, and it can operate normally for a long time within the range of -196 ℃ to 204 ℃. Although it […]
Mechanical property differences between PP and PE: PP material: It possesses excellent tensile strength and toughness, which makes it widely used in the manufacture of plastic products, automotive parts, and electronic components. However, PP material has low dimensional accuracy, insufficient rigidity, poor weather resistance, and exhibits post-shrinkage, becoming prone to aging, embrittlement, and deformation after […]
Main classification of optical fibers: 1. From the perspective of materials, there are quartz-based optical fibers, multi-component glass optical fibers, all-plastic optical fibers, fluoride optical fibers, etc. 2. According to the number of fiber conduction modes, it can be divided into multimode fiber and single-mode fiber a) Multimode fiber: The core is relatively thick (50/125um […]
