Will the control of special cables, control cables, power cables, what is the difference between the three
Automatic control cable: refers to the automatic control signal type cable, generally multi-strand copper core cord, mainly for the transmission signal, the cross-section is small, mostly 0.25 to 1 square millimeters of small lines, 10 to hundreds of cores Control cable: refers to the transmission control signal class cable, generally multi-core hard wire, transmission control signal is generally used 1.5 ~ 2.5 square millimeters, the transmission voltage signal is generally used 2.5 ~ 4 square mm cable, transmission current signal is generally used 4 to 6 square millimeters of cable, 4 to 36 cores, and the number of cores is relatively rare. Power cable: we often say that the power cable, transmission of electrical hard copper or aluminum cable, 1 to 5 core, single-core cross-section 16 to 600 square millimeters.
4 square of the line, the line can not have other high-power electrical appliances can not pull green, but it is recommended to pull the best line,
Low-smoke halogen-free flame retardant cable material contains high-filled magnesium hydroxide or aluminum hydroxide, so the choice of the screw for the general use of ordinary type of screw and its pressure alone 粻 toilet to help Pie Cheese wedge open blindness ratio Can not be too large, generally between 1: 1 ~ 1: 2.5 more appropriate. Extrusion process also has an impact on the low smoke halogen-free cable material extrusion important factor, that is, the extruder cooling device, because the special characteristics of low smoke halogen-free material, in the extrusion process, due to friction and large Of the heat, which requires extrusion equipment to have a good cooling device in order to control the process temperature. This is a problem that can not be ignored, if the temperature is too high will make the cable surface has a large pores, the temperature is too low will make the machine's machine current increases, easy to damage the device.
The large working current is about 4 amps [860 watts]. If there is no high-power load on the line, and the wire size is not less than 2.5 square millimeters, no additional cable. Today, copper is very high, if you want to pull green, 1.5 square copper heart line is enough. Do not have 2.5 square feet, unless the distance is longer. Basic basis: copper per square millimeter can carry 5 amps of safe current.
