The improvement of the safety performance of the cable mainly depends on a number of factors, including the choice of insulation materials, the protective effect of the sheath, and the design of the cable structure. Here is a detailed explanation of these aspects:
People pay more and more attention to environmental protection, as an important carrier of power transmission, wire and cable environmental requirements are also increasingly concerned. In the process of landing the "double carbon" goal and the new power system construction goal, the selection of wire and cable, but also need to fully understand the environmental performance of wire and cable.
KYJV: Copper core crosslinked polyethylene insulated polyvinyl chloride sheathed control cable. Used for control, signal, protection and measurement system wiring. K(Control) YJ(cross-linked polyethylene insulation) V(polyvinyl chloride sheath) R (flexible wire) P (shielding) ZR (Flame retardant default class C) 2 (steel strip) 2 (polyvinyl chloride)
This paper introduces the standard and identification method of national standard cable. So, what kind of cable is produced in accordance with national standards? How to identify and distinguish different qualities of cable? What quality level does "enterprise standard/non-standard", "market national standard" and "resistance national standard" represent? Whether you are a wire and cable sales staff, or purchasing staff, I believe this article will help you.
Cable resistance refers to the maintenance measures taken to ensure that the resistance value of the cable system meets the design requirements. During the use of the cable, due to the influence of the external environment, such as humidity, high temperature, vibration, etc.,
Cable parallel connection is a common wire connection method, which can improve the carrying capacity of the wire and ensure the safe and stable operation of the wire. When the cable is connected in parallel, attention should be paid to the matching of the cross-sectional area of the wire, the limitation of the number of combined groups, the method of wiring, the control of the distance between the wires and the fixing of the cables to avoid the occurrence of wire accidents. Let's take a look at