Stainless steel cable: usually consists of several or several groups of wires.
Definition 1: A conductor made of one or more insulated conductors and an insulated insulation layer to transfer electricity or information from one location to another.
Definition 2: Cable-like cables that are usually twisted from a few or several sets of wires (at least two in each group), each of which is insulated from each other and often twisted around a center. Highly insulated cover. Cable with internal power, external insulation characteristics.
Cable, power cable, control cable, cable, shielded cable, high temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mine cable, aluminum alloy cable and so on. They are composed of single or multi-strand wire and insulation layer, used to connect the circuit, electrical and so on.
Cable according to the system of photovoltaic power plants can be divided into DC cables and AC cables, according to the use and use of different types of environment are as follows:
1. DC cable
(1) Series cable between component and component.
(2) between the strings and their strings to the parallel distribution between the DC distribution box (confluence box).
(3) DC distribution box to the cable between the inverter.
The above cables are DC cables, outdoor laying more, need moisture, anti-exposure, cold, heat, anti-ultraviolet, some special circumstances need anti-acid and other chemical substances.
2. AC cable
(1) the connection cable of the inverter to the step-up transformer.
(2) connection of the step-up transformer to the power distribution unit.
(3) Power distribution unit to the grid or the user's connection cable.
This part of the cable for the AC load cable, indoor environment laying more, in accordance with the general selection of power cable selection requirements.
The manufacture of wire and cable is totally different from that of most electromechanical products. Electromechanical products are usually used to assemble parts into parts, multiple parts and then assembled into a single product, the number of products or the number of pieces measured. The wire and cable are based on the length of the unit of measurement. All wire and cable are from the beginning of the conductor processing, in the periphery of the conductor layer by layer with insulation, shielding, cable, sheath, etc. made of wire and cable products. The more complex the product structure, the more the level of stacking.
First, the large length of continuous stacking combination of production methods, the impact of wire and cable production is global and control, which involves and affects:
(1) production process and equipment layout
Production workshop of various equipment must be reasonable according to the requirements of the product process emissions, so that the various stages of semi-finished products, followed by flow. Equipment configuration to consider the production efficiency of different production capacity balance, and some equipment may have to be configured two or more, in order to make the production capacity of the production line can be balanced. The rational selection of equipment and the layout of the production site must be based on product and production to balance the comprehensive consideration.
(2) production organization and management
Production organization and management must be scientific and reasonable, careful and accurate, strict and meticulous, the operator must be meticulously according to the requirements of the implementation process, any one part of the problem, will affect the smooth process, affecting product quality and delivery. Especially multi-core cable, a pair of pairs or basic unit length is short, or quality problems, the whole cable will be length is not enough, resulting in scrapped. Conversely, if a unit is too long, it must be sawed to cause waste.
(3) quality management
Large length continuous stacking combination of production methods, so that any part of the production process, instantaneous occurrence of a problem, it will affect the quality of the entire cable. The more the quality defects occur in the inner layer, and there is no timely detection of the termination of production, then the greater the loss caused. Because the production of wire and cable is different from the assembly of the product, you can open the reload and replace the parts; wire and cable of any part or process quality problems, this cable is almost irreversible and make up. After the deal is very negative, not a short break is down processing, or scrapped the entire cable. It can not be disassembled.