What is Flexible Electrical Wire?

What is the copper flexible electrical wire?

Copper flexible electrical wire refers to a wire made from multiple strands of thin copper wires. The wire usually has a dozen to dozens of cores and a small bending radius; non-flexible cables are bundles of a single or a few thicker cables. The produced cable has a larger bending radius. Flexible wire is usually a rope-like cable that is twisted by several or several groups of wires (at least two in each group). Each group of wires is insulated from each other and is often twisted around a center. Highly insulating cover layer. The cable has the characteristics of being energized inside and insulated outside.

Classification of common copper flexible electrical wire in the market:

Cables include power cables, control cables, compensation cables, shielded cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and so on. They are composed of single or multiple strands of wires and insulating layers, which are used to connect circuits and electrical appliances.

The comparison between copper flexible electrical wire and hard wire

1. The advantages of hard wire: high hardness, high mechanical strength, small surface area, so it has strong tensile strength, is not easy to oxidize, and has a long service life. It is relatively resistant to short-circuit current and is easy to form, so it is better to use hard wires to make the control cabinet. Disadvantages: more laborious and difficult to combine.

2. Advantages of copper flexible electrical wires: good heat dissipation, easier and softer when wearing pipes for protection. Disadvantages: The surface area is also large, and it is easy to oxidize. If the connection is not good, it is easy to burn, it is not very resistant to short-circuit current, it is difficult to maintain a fixed shape, and the price is high.

Extended information

Because the copper flexible electrical wire has weak tensile strength, weak corrosion resistance, strong fatigue resistance, and low waste recovery rate, the flexible wire is suitable for the connection of equipment wiring.

Compared with flexible wires, hard wires are cheaper, stronger in tensile strength, stronger in corrosion resistance, weaker in fatigue resistance, and have a higher waste recovery rate. Therefore, hard wires are generally used in power systems, that is, for buried walls, Buried, used as the main line.

When replacing the wire, although the hard wire is more laborious, it can be completely drawn out from the threading pipe. If necessary, it can replace the threading steel wire and pull the new wire in together. However, the flexible cord is prone to breakage after aging, and the cord may be accidentally broken when changing the cord.

How is the copper flexible electrical wire named?

1. The specific representation method of flexible cable (also called rubber sheathed cable):

Rubber sheathed cables are divided into heavy rubber sheathed flexible cables (YC cables, YCW cables), medium-sized rubber sheathed flexible cables (YZ cables, YZW cables), light rubber sheathed flexible cables (YQ cables, YQW cables), and waterproof rubber sheathed flexible cables ( JHS cable, JHSP cable), welding machine cable (YH cable, YHF cable) and YHD cable are tin-plated power cables for field use. In addition, RVV cable is also a kind of flexible cable.

2. Hard cables are generally expressed by BV:

Such as: BLV aluminum core PVC insulated wire; BVV copper core PVC insulated PVC sheathed wire; BLVV aluminum core PVC insulated PVC sheathed wire.

During the procurement process of the project, many procurement personnel may have similar questions. For example, what does the PVC insulated flexible cable and wire mean? In order to better communicate with your suppliers, the following introduction may be able to help you.

PVC insulated flexible wire

1. Purpose:

It is suitable for the connection of household appliances, small electric tools, instruments and power lighting devices with AC rated voltages of 450/750V and below.

2. Conditions of use: long-term allowable working temperature: RV-105 type does not exceed 105 ℃; other models do not exceed 70 ℃.

Model name: Model name

RV：Copper core PVC insulated connection flexible wire

RVB：Copper core PVC insulated flat connecting flexible wire

RVS：Copper core PVC insulated stranded connecting flexible wire

RVV：Copper core PVC insulated and PVC sheathed round connection flexible wire

Extended information

Generally, soft cables have an R letter more than hard cables. For example, wire, hard wire is denoted as BV, flexible wire is denoted as BVR, and there is also a kind of flexible wire denoted as RV, but although BVR and RV are both flexible wires, the copper wool wire used is different, and the insulation thickness is also different. Used under different conditions; hard sheathed cables are represented by BVV, and soft sheathed cables are represented by RVV; ordinary power cables are generally hard cores, represented as YJV, and if there are special requirements, soft cores are also represented by YJVR. Rubber sheathed cables are all soft cores, so the letter R is omitted when the rubber sheath is indicated, such as YC, YZ

The super star in the copper flexible electrical wire family

The full name of RVV cable is copper core PVC insulated PVC sheathed flexible cable, also known as light PVC insulated poly, commonly known as soft sheathed wire, which is a kind of sheathed wire. RVV wire and cable is two or more RV wires plus a layer of sheath.

RVV cable is the most commonly used cable for weak current systems. The number of core wires is variable, two or more, and there is a PVC sheath on the outside. There is no special requirement for the arrangement of the core wires. The letter R represents the flexible cord and the letter V represents the insulator polyvinyl chloride (PVC)

For example: RVV2*0.5 means 2 wires of 0.5 square millimeter plus a layer of outer sheath. The function of the sheath is:

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

2. Enhance the mechanical strength of the cable. The main purpose of RVV cable: used in power lines, control lines and signal transmission lines for electrical appliances, instruments, electronic equipment and automation devices, specifically for anti-theft alarm systems, building intercom systems, etc.

Purpose

It is suitable for control signal transmission lines, electrical equipment, meters, automation equipment, security and anti-theft alarm systems, high-rise building intercom systems, home lighting connection lines, etc.

How to connect the copper flexible electrical wire?

Many people nowadays, when decorating their houses, they especially like to use flexible wires to transform circuits, because the heat dissipation performance of flexible wires is better, the circuit will not generate heat very much, and the flexible wires are very easy to pass through the pipe. It does not need to spend too much energy, so the construction period can be shortened, so how should the flexible wire be connected when it is connected? Today, the editor will explain the specific wiring method for everyone

Wiring method

First cut off the insulation layer of the two flexible wires to a length of 3 cm with a utility knife

Cross the two wires together, and keep rotating the two wires with your hands until the two wires are joined together

Use a welder to solder the two wires slightly to prevent the two wires from loosening later

Advantage analysis

The use of flexible wires to transform lines can shorten the construction period of water circuit reconstruction, because flexible wires are particularly good, and it does not take too much time and effort to wear pipes.

The heat dissipation performance of the flexible wire is very good, because the flexible wire is composed of many small copper wires, and there is a certain gap between these small copper wires, so when heat is generated, it can be in a short time Dissipate the heat

The flexible wires sold on the market now mainly have the following colors, namely red, yellow, blue, green, black, brown, yellow-green and white. However, it is not enough to look at the color when buying, we can take a look The abbreviation on the wrapping paper. If it shows bvr, it means it is a flexible wire. If it shows bv, it means it is a hard wire.

Manufacturers focus on copper flexible electrical wire in China

There are nearly 550 copper electrical wire manufacturers in China now. However for our foreign purchaser, if you want procure from China, actually you have few choices, cause many suppliers don’t have the relative authoritative certification. Whether it is good or not, the question of who is better is a matter of opinion. Generally, it is necessary to comprehensively evaluate and consider the qualifications of the organization, industry experience, external resources, and successful cases. More importantly, you need to focus on the aspects you care about at the moment, and you can't finish it in one sentence or two sentences. JZD Wire&Cable has been focusing the copper flexible electrical wire for 20 years and owns 6 years export experiences to many countries, such as Australia, The Philippines, South American, France, Germany, Israel etc and welcome to contact us and send your inquiry to us, we will reply on you within 2 hours.