what is the Technical parameters or Standard method of use for terminal wires

2021-12-17

Technical parameters and Standard method of use for terminal wires

Terminal wire harness is a kind of electrical connection wire , which can arbitrarily select the number and spacing of wires. It is widely used in the link between various printers and motherboard, such as fax machine, audio, plotter, copier, liquid crystal appliance, scanner and so on.

1. Spacing P: the distance between the center wires of two adjacent conductors;

2. Full spacing TP: the distance between the center wires of the outermost two conductors, TP = P * (n-1);

3. Insertion thickness TT: the thickness of the two connecting ends of the cable;

4. Number of conductors n: the number of copper conductors in the row;

5. Total length TL: the distance between two ends of the cable;

6. Edge distance M: the distance from the center wire of the outermost conductor to the edge of the wire:

7. Total width W: the distance between the two edges of the wire, w = P * (n + 1);

The above is the FFC technical parameters of the terminal wire. If you don't understand anything, please leave us a message!

For the specifications and application methods of terminal wire, high-voltage wire and low-voltage wire, firstly, the cable section shall be selected according to a certain economic current density, so as to minimize the annual operation cost of the cable, save electric energy and non-ferrous metals, and verify other conditions.

For general low-voltage lighting circuits, due to the need for higher voltage levels, the section is usually selected according to the allowable voltage loss conditions, and then its heating conditions and mechanical strength are checked.

For the low-voltage power cables, due to its large load current, the section is selected according to the heating conditions, and the voltage loss and mechanical strength UL terminal wire are verified.

Generally speaking, the lighting level provided by terminal wires and wires and cables, road and bridge lighting equipment is low, and the human eye is in an intermediate vision state. At this time, the difference object is not completed by the color difference between the two, but depends on the brightness difference between the object and the scene. Taking distance lighting as an example, whether it is single-sided distribution lamp, interlaced distribution lamp, symmetrical distribution lamp or base distribution lamp, the distance lighting load on the bridge is evenly dispersed. When calculating the voltage loss, it can be assumed that the dispersion load will gather at the midpoint of the dispersion wire segment and calculated according to the convergence load.

According to the requirements of bridge power supply quality, the finished voltage of bridge lighting load line shall not be less than 90% of the additional voltage and shall not be greater than 105% of the additional voltage; The finished voltage of the power load line on the bridge shall not be less than 90% of the additional voltage; Low voltage power supply shall meet the following requirements: ctor cos_ Shall be higher than 0.85.

Terminal wire specifications are divided into: UL terminal wire, PVC terminal wire, PE terminal wire, shielding terminal wire, rainbow terminal wire, gray terminal wire, Teflon high temperature terminal wire, silica gel high temperature terminal wire, etc. the products are widely used in machinery, electronic products, toys, household appliances, computers, electrical equipment, military industry, ships and other industries.