RVVB copper core PVC insulation sheath flat national standard quotation

1. Classification and purpose are used for distributing current, belonging to the category of electrical wiring, represented by the letter "B";

2. The conductor material is copper (oxygen free copper rod), represented by the letter "T", and the copper core conductor is omitted in the wiring;

3. The insulation material is polyvinyl chloride, represented by the letter "V";

BVV wires have a simple structure and some also have a sheath. The sheath material is polyvinyl chloride, also represented by the letter V. For example, BVV wires represent copper core polyvinyl chloride insulated polyvinyl chloride sheathed round wires. The commonly used BV wire diameters range from 1.5 square meters to 240 square meters.RVVB copper core PVC insulation sheath flat national standard quotation

RV - PVC insulated single core flexible wire, with a high operating temperature of 65 ℃ and a low operating temperature of -15 ℃, working voltage of AC 250V and DC 500V, used for internal wiring of instruments and equipment.
RVB: Parallel multi strand flexible wire (flat), just like the bare wires commonly used in households, except for the core wire and RVV core wire *. The two core wires are parallel wrapped in a sheath, usually one sheath with two wires
RVS: Twist multiple strands of flexible wire, which means tearing off the soft core of RVB and twisting it together. Usually two pairs are twisted together.
RVVB: PVC sheathed flexible wire (flat type), standard GB/T 5023.5-2008/IEC 60227-5:2003.
RVV: Multi strand flexible wire, which is composed of multiple strands of copper wire as the core wire. RVV wire is a commonly used cable in weak current systems, with varying numbers of core wires, including single and multiple, and also has a protective sheath on the outside. However, there are no specific requirements for the arrangement between the core wires.
RVVP: Copper core PVC insulated shielded PVC sheathed flexible cable, also known as electrical connection anti-interference flexible cable, rated voltage 250V/450V.

RVVB copper core PVC insulation sheath flat national standard quotation

The full name of RVV cable is copper core PVC insulated PVC sheathed flexible cable, also known as lightweight PVC insulated poly, commonly known as soft sheathed wire, which is a type of sheathed wire. RVV wires and cables are two or more RV wires with an additional layer of sheath. RVV cable is a commonly used cable in weak current systems, with an indefinite number of core wires, two or more, and a PVC sheath on the outside. There are no special requirements for the arrangement of core wires. The letter R represents the flexible wire, and the letter V represents the insulator polyvinyl chloride (PVC)

For example, RVV2 * 0.5 refers to two wires with an area of 0.5 square millimeters and an outer sheath. The purpose of the sheath is to:

1. Protect the inner protective layer of the cable from mechanical damage and chemical corrosion;

2. Enhance the mechanical strength of the cable. The main purpose of RVV cables is to be used as power lines, control lines, and signal transmission lines for electrical appliances, instruments, electronic equipment, and automation devices. Specifically, they can be used for anti-theft alarm systems, building intercom systems, etc.