What is weak current cable? Introduction to classification and use

　　1. What is a weak-current cable?

　　Cable is one of the indispensable components of electromechanical products. It refers to the general term for soft wires or cables used to connect electrical equipment or control devices during the assembly or subassembly of electromechanical products. Weak-current cables refer to cables used for security communications, electrical equipment and related weak-current transmission purposes. Weak-current cables have low power and can be laid in a single slot.

　　2. Classification and use of weak-current cables

　　(1) RVV: Full name: Copper core polyvinyl chloride insulated polyvinyl chloride sheathed soft cable. RVV wires are round in appearance, with a large number of cores and twisted wires between the two cores. R stands for soft wire, and the letter V stands for insulator polyvinyl chloride (PVC).

　　The main uses of RVV cables: used for power lines, control lines and signal transmission lines that do not require shielding in electrical appliances, instruments and meters, electronic equipment and automation devices.

　　(2) RVVP

　　Full name: Copper core polyvinyl chloride insulated polyvinyl chloride shielded soft cable. It is suitable for anti-interference line connection and efficient and safe data transmission in the fields of communication, audio, broadcasting, sound system, anti-theft alarm system, intelligent automation system, automatic meter reading system, fire protection system, etc.

　　The letter R represents the soft wire, the letter V represents the insulator polyvinyl chloride (PVC), and the letter P represents the shield. RVVP can be used for the control lines of monitoring systems, access control systems, building video intercom systems and building control systems.

　　(3) AVVR cable: full name: copper core polyvinyl chloride insulated polyvinyl chloride sheathed installation soft cable. Usually used for weak current power supply.

　　(4) BV: full name: copper core polyvinyl chloride insulated wire, BV wire is also called plastic copper wire, where B represents the category, belonging to the cloth wire, V represents the insulation material is polyvinyl chloride, generally suitable for AC voltage 450/750V and below electrical instrument equipment, power lighting and other fixed wiring power supply.

　　(5) BVR: full name: polyvinyl chloride insulated soft wire. BVR wire, generally refers to BVR power cord, is a copper core polyvinyl chloride insulated soft wire used in fixed wiring and other occasions where softness is required. B represents the classification of wire, V represents PVC polyvinyl chloride, also known as "plastic", and R represents softness. In order to achieve the soft effect, the number of conductors must be increased.

　　BVR wire is also divided into flame retardant wire (ZR-BVR), fire resistant wire (NH-BVR) and low smoke halogen-free wire (WDZ-BVR) according to the selected materials. It is mainly used for fixed wiring of electrical instruments and equipment and power lighting.

　　(6) UL 2464: multi-core shielded wire, used for computer connection wire.

　　(7) RVB: RVB is a flat unsheathed soft wire, commonly known as red and black (parallel) wire. It is suitable for connecting electricity for household appliances, small power tools, instruments and power lighting.

　　(8) RVVB: RVVB is a flat sheathed soft wire. RVVB and RVB have the same purpose, the difference is that RVB is a flat unsheathed soft wire, while RVVB is a flat sheathed soft wire. Therefore, RVVB has one more sheath than RVB.

　　(9) RVS: Full name: Copper core polyvinyl chloride insulated twisted connection soft wire, twisted multi-strand soft wire, referred to as twisted wire, commonly known as "flower wire". At present, this type of wire is mostly used in fire protection systems, also known as "fireproof wire". The letter S represents twisted pair, the letter R represents soft wire, and the letter V represents polyvinyl chloride (insulator).

　　(10) SYV: Full name: Solid polyethylene insulated radio frequency coaxial cable. S represents coaxial radio frequency cable, Y represents polyethylene, and V represents polyvinyl chloride. It is usually used to transmit video signals in analog monitoring systems, video intercom systems and cable TV systems.

　　(11) SYWV: Full name: Polyethylene physical foam insulation coaxial cable. It is usually used for satellite TV transmission, cable TV transmission and long-distance video intercom system special cables, suitable for radio frequency transmission.

　　(12) VGA cable: This is an analog signal video cable, most commonly used to connect computers and monitors.

　　(13) RG: Full name: Physical foamed polyethylene insulated access network cable, usually used for weak current video image transmission or hybrid fiber coaxial cable network (HFC network) to transmit data analog signals. The RG in RG-58/59 is the RF cable series number. RG plus different numbers represent RF cables with different structures and performances.