& nbsp; Elevator cables have an important effect on elevators, but do you know how to choose good cables? Below, the editor will summarize how to choose a good elevator cable. In the selection of elevator cables, the following two criteria should be followed: outstanding electrical parameters; During the movement of the cable following the elevator, there will be a section at the center that undergoes twisting and deformation due to gravity, resulting in changes in electrical parameters such as impedance and distributed capacitance of the cable.
& nbsp; When cables with poor quality deform under stress, significant changes in parameters can cause impedance mismatch, increased video attenuation, and signal reflection. This can lead to a decrease in the signal-to-noise ratio of the video signal and cause video interference. Therefore, it is recommended to choose shielded and large-diameter video cables as much as possible.
& nbsp; Satisfactory tensile strength; Half of the elevator cables are used for extension, and high-rise elevators can reach more than 100 meters. The weight of a 100 meter cable is nearly 100 kilograms, so it is necessary for the cable to have sufficient tensile strength. There are already self-supporting flat composite elevator monitoring cables on the market now.
& nbsp; This type of cable combines video coaxial cable, power line, data line, and steel strand to form a flat ribbon cable. The tension of the entire cable is received by the steel wire rope, and the tensile strength is very good. It will not break the signal cable due to gravity during elevator operation.
