What are the characteristics of eco-friendly cables?

Views: 78     Author: Site Editor     Publish Time: 2022-04-26      Origin: Site

What are the characteristics of eco-friendly cables?

In the face of people’s increasing concern about the living environment and living environment, the market prospect of environmental protection cables is also increasingly optimistic. It has gradually become the development trend of global cables. We cannot underestimate the development potential.

What are the characteristics of environmental protection cables?

1. Flame retardant and fire resistance: The flame retardant and fire resistance of environmentally friendly wires and cables fully comply with the national fire protection standards. When an electrical fire occurs, the wires and cables are not easy to burn. It can minimize the spread of the flame after the wire and cable are burned.

Environmental protection wire and cable

2. No pollution: The insulating materials and sheathing materials used in environmentally friendly wires and cables are all green and environmentally friendly. While ensuring high-quality and stable electrical performance and physical and mechanical functions, it also ensures the safety performance of wires and cables and avoids waste wires. “Secondary pollution” formed after the incineration of cables.

3. The toxicity of the wire and cable itself is low: because of the particularity of the raw materials used in the environmental protection wire and cable, the wire and cable insulation and outer sheath do not contain lead, cadmium, and other heavy metals that are harmful to the human body, and can be used in daily use. The greatest extent is possible to ensure our health and safety.

4. The wire and cable will not decompose the corrosive gas: the environmentally friendly wire and cable are made of new and non-polluting unique materials, which will not produce a variety of toxic gases due to high temperature and other reasons during use, and cause less harm to equipment and instruments. , more environmentally friendly features of environmental protection wire and cable.

For many people, cables, wires, optical cables, and optical fibers are standard in life but cannot be ignored. But what is the difference between them? Many people can’t tell clearly.

Today DehuiCable introduces the delicate relationship between cables, wires, optical cables, and optical fibers.

The difference between wire and cable

In fact, “wire” and “cable” do not have strict boundaries. Usually, products with few cores, small product diameters, and simple structures are called wires. Those without insulation are called bare wires. Others are called cables; those with a more prominent conductor cross-sectional area (greater than 6 square millimeters) are called large wires. Small (less than or equal to 6 square millimeters) are called small wires, and insulated wires are also called cloth wires.

A wire consists of one or several soft conductors covered with a light and soft sheath; a cable consists of one or several insulated conductors covered with a tough outer layer made of metal or rubber. Cables and wires are generally composed of the core wire, insulating sheath, and protective sheath.

The characteristics of commonly used cables are as follows:

CEF – ethylene-propylene rubber insulated neoprene sheath, marine flame retardant power cable.

CVV – PVC insulated, PVC sheathed marine flame retardant power cable.

Oxygen cabin wires often use BV, BX, RV, RVV series wires, among which: BV – copper core PVC insulated wire, long-term allowable temperature 65 ℃, minimum temperature -15 ℃, working voltage AC 500V, DC 1000V, fixed laying Indoor or outdoor, can apply it lightly or darkly.

BX——Copper core rubber insulated wire, the maximum operating temperature is 65℃, applied indoors. RV – PVC insulated single-core flexible wire, the highest operating temperature is 65°C, the lowest operating temperature is -15°C, the working voltage is AC 250V, DC 500V, used for internal wiring of instruments and equipment.

RVV——Copper core PVC insulated and sheathed flexible wire, allowing the long-term working temperature of 105 ℃, the working voltage of AC 500V, DC 1000V, used for wet, high mechanical protection requirements, frequent movement, and bending occasions. In fact, “wire” and “cable” do not have strict boundaries.

Usually, products with few cores, small product diameters, and simple structures are called wires. Those without insulation are called bare wires. Others are called cables; those with a more prominent conductor cross-sectional area (greater than 6 square millimeters) are called large wires. Small (less than or equal to 6 square millimeters) is called small wire. Insulated wire is also called cloth wire. On, the length is generally greater than 100 meters. The wire is generally single-layer insulated, single-core, 100 meters in a roll, and has a wireless reel.

Common types of cables: VV means: PVC insulation (the first V), PVC sheath (the second V), YJV22 means: cross-linked PVC insulation (YJ), PVC sheath (V), The steel belt Kaizhuang (22) model plus “ZR” or “FR” is a flame

Retardant cable (wire).

Add “L” to the model of aluminum wire is relatively simple: BVV–polyvinyl chloride insulated and sheathed copper core wire, BV–polyvinyl chloride insulated copper core wire, BYJ–copper core cross-linked polyolefin insulated wire, BVR–polyvinyl chloride insulated copper core cord, BX–rubber insulated copper core cord, RHF–neoprene rubber sheathed copper core cord.

(2) The smaller diameter is called “wire”; the larger diameter is called “cable.”

(3) The simple structure is called “line”; the complex structure is called “cable.”

However, with expanding the scope of use, many varieties have “cable inline” and “cable in the cable.” So there is no need to distinguish strictly.

In daily habits, people call household wires, wires, and power cables for short.

Wires and cables mainly include bare wires, winding wires, power cables, communication cables, optical cables, and electrical equipment.

The difference between cable and optical cable

Cable: When the phone converts the acoustic signal into an electrical signal and transmits it to the switch via the line. The switch directly transmits the electrical signal to the other phone via the line for answering. The transmission line during this call is the cable. The cable is mainly composed of copper core wires.

The diameter of the core wire is divided into 0.32mm, 0.4mm, and 0.5mm; the more significant the diameter, the stronger the communication ability; there are also points according to the number of core wires, including 5 pairs, 10 pairs, 20 pairs, 50 pairs, 100 pairs, 200 pairs Wait, the logarithm mentioned here refers to the maximum number of users that the cable accommodates; there are also points by package.

Cable: It is bulky, heavy, and has poor communication capability, so you can only use it for short-range communication.

Optical cable: When the phone converts the acoustic signal into an electrical signal and transmits it to the switch through the line, the switch transmits the electrical signal to the photoelectric conversion device (converts the electrical signal into an optical signal) and transmits it to another photoelectric conversion device ( Convert the optical signal into an electrical signal), and then send it to the switching equipment and answer it on another phone.

The line between the two photoelectric conversion devices is the optical cable. It is said that it is only divided into the number of core wires, and the number of core wires is: 4, 6, 8, 12 pairs, and so on.

Optical cable: It has the advantages of small size, small weight, low cost, large communication capacity, and strong communication ability.

Due to many factors, it is currently only used for long-distance and point-to-point (i.e., two exchange rooms) communication transmission. The difference between them: the inside of the cable is copper core wire; the inside of the optical cable is glass fiber.

An optical fiber communication cable is a kind of communication line in which a certain number of optical fibers form a cable core according to a particular method covered with a sheath. Some are also covered with an outer sheath to realize optical signal transmission.

The cable is usually a rope-like cable formed by twisting several or several groups of conductors [at least two in each group]. Each group of conductors is insulated and often twisted around a center—an insulating covering, especially a submarine cable.

submarine cable

1: There are differences in material. The cable is made of metal material (mainly copper, aluminum) as the conductor; the optical cable is made of glass fiber.

2: There is a difference in the transmission signal. Cables transmit electrical signals. Optical cables transmit optical signals.

3: There are differences in the scope of application. Cables are now primarily used for energy transmission and low-end data information transmission (such as telephone). Optical cables are primarily used for data transmission.

The difference between cable and optical fiber

A cable is generally considered a wire made of one or more mutually insulated conductors covered with insulation and protective layers. It transmits electricity or information from one place to another. In a broad sense, it refers to a device that uses metal as a medium to transmit electrical signals.

By definition, cables are used to conduct electricity. Generally manufactured from the following metals:

Copper conductivity is second only to silver; thermal conductivity is second only to gold and silver; corrosion resistance, non-magnetic, good plasticity, easy to weld, and widely used. Copper alloys are mainly used to improve the wear resistance, corrosion resistance, and mechanical and physical properties of copper.

Silver, the metal has the highest electrical conductivity and thermal conductivity, has good corrosion resistance and oxidation resistance and is easy to weld;