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 […]
Why is there a minimum allowable bending radius specified for cables? The minimum allowable bending radius for cables is specified to ensure that the cables operate without damage or significant reduction in lifespan, and is not explicitly defined. The smaller the minimum bending radius, the better the bending performance. The minimum bending radius refers to […]
The main reasons for using fumigated wooden trays for cable exports are: I. compliance with international quarantine requirements • Regulatory compliance: Most countries/regions globally have strict quarantine regulations to prevent the introduction of harmful organisms (such as pests, insect eggs, and pathogens) carried by wooden packaging, which could lead to biological invasion or the spread […]
Underwater umbilical cables integrate multiple functions such as optical fiber communication, remote control command transmission, video image transmission, remote power supply, and the conveyance of working liquids and gases, serving as the optoelectronic transmission link between underwater equipment. They are not only capable of transmitting loads, energy, information, and substances to underwater equipment, but also […]
VW-1 (Vertical) Combustion Test 1080.1: During the application of standard test flame to the vertical specimen for 5 times, each time lasting for 15 seconds, during the flame application intervals, or after the flame application, a) the flame shall not propagate along its length; b) the flame shall not propagate to nearby combustible materials. The […]
Vertical combustion and FT1 test: 1060.1 For vertical test samples of finished wire and cable or flexible cords, during the application of standard test flames for 5 times, each lasting for 15 seconds, and during or after the flame application intervals, a) the flame must not propagate along its length; b) the flame must not […]
Aluminum foil Mylar is a composite material consisting of aluminum foil and polyester film (Mylar). I. Main characteristics of aluminum foil Mylar: 1) Excellent barrier properties. Aluminum foil Mylar exhibits excellent barrier properties, effectively blocking moisture, oxygen, light, and electromagnetic waves. 2) High strength and durability: The addition of polyester film enhances the mechanical strength […]
Cable shielding density refers to the quantitative indicator of the shielding capability of the cable shielding layer towards electromagnetic signals. It is usually expressed as a percentage, reflecting the extent to which the shielding layer can block or attenuate electromagnetic interference. The shielding density depends on factors such as the thickness of the braided wire […]
The conductor material of wires and cables directly affects electrical safety and efficiency. The differences between copper core and aluminum core are mainly reflected in the following five aspects: Copper has a conductivity 1.68 times higher than aluminum, and under the same cross-sectional area, copper core cables have a 30% higher current-carrying capacity than aluminum […]
Copper Conductors Types Copper conductors mainly cover several types: stranded wire, solid wire, tinned copper wire, aluminum wire, magnet wire, pre-twisted then plated wire and metallic yarn. Stranded wire: It is the most widely adopted option and used for the majority of cables, largely due to the reasons listed below: 1.Easy extrusion processing, making the […]
