What is the difference between the use of power BV line and power YJV cable

Difference in use] The applicable occasions are different, BV line.

It is used as a cable for indoor lighting in the house, suitable for power devices, daily electrical appliances, instruments and telecommunication equipment with AC voltage of 450 750V and below, and is more suitable for life cables; YJV cable.

It is buried outdoors and overhead with power main cables, channels and pipes, and can also be buried in loose, insulated PVC.

Sheathed power cable soil, can not withstand the external force action is more heavy than industrial power.

Feature differences] 1. BV is PVC insulated copper core wire, single-layer insulation, low maximum working temperature, and natural current carrying capacity.

It is also lower, with low mechanical strength and low life.

2. YJV is a cross-linked polyethylene insulated power cable, double insulation, high mechanical strength, high working temperature and long life.

Detailed differences between wires and cables].

1. The difference between materials.

Wire: A conductive metal wire used to carry electric current. There are various forms such as solid, stranded or foil braided. According to the insulation status, it is divided into two categories: bare wires and insulated wires.

A cable consists of one or more insulated conductors with conductive cores that are insulated from each other in a sealed jacket. The difference between wires and cables is that the size of the wire is generally small, and the structure is relatively simple, but sometimes the cable is classified as a generalized wire.

2. Differences in use.

Bare wires that do not contain any insulation or protective layer. In addition to being used as a conductor for the transmission of electrical energy and information, it can also be used to manufacture components and connecting wires for electrical appliances. Generally, copper, aluminum, and copper alloys are used.

Aluminum alloy. In addition, there are various insulated wires suitable for special requirements, such as low-voltage wires for automobiles, high-voltage ignition wires for automobiles, motor and electrical lead wires, aviation wires, compensation wires, etc. Cables are used to transmit, distribute electrical energy, or transmit electrical signals.

Cables can be divided into power cables, communication cables and control cables according to their use.

3. The difference in structure.

The difference between power cables and ordinary wires is mainly that the cable size is larger and the structure is more complex. The cable is mainly composed of the following 4 part groups. Conductive core: with high conductivity.

made of materials. Insulation The insulating material used as a cable should have a high insulation resistance.

High breakdown electric field strength.

Cables are often classified by insulating materials.

In addition to the above differences, cables also have distinct advantages. Compared with overhead lines, the advantages of cables are that the insulation distance between the lines is small, the space is small, the underground laying does not occupy the space above the ground, it is not affected by the pollution of the surrounding environment, the reliability of power transmission is high, and the interference to personal safety and the surrounding environment is small. Therefore, cables are mostly used in densely populated and grid-dense areas and traffic congestion places.

It plays a role that cannot be ignored in the modernization drive.

BV wire use: general purpose single-core hard conductor unsheathed cable, suitable for AC voltage 450 750V and below power devices, daily electrical appliances, instruments and telecommunications equipment for cables and wires.

YJV wire and cable use: suitable for power line transmission and distribution with rated voltage of (U0 U). Used for pipes, pallets and buried directly in the ground.

For details, please refer to.

BV wire is also called ordinary cloth wire, that is, the wires distributed and arranged on the building or equipment, generally a single wire, there are also 2-3 cores with sheath (most of them are flat), a single wire is generally not more than 240 square millimeters, sheathed wire is not more than 10 square millimeters, YJV cable is a cross-linked polyethylene cable, generally 3-5 cores, the wire diameter is generally more than 10 square millimeters, large 400 square millimeters, all are round, relatively hard, suitable for buried, can also be laid with a bridge; There is a JKY or JKLY called overhead insulated wire, which can be erected on electric poles. The difference is obvious: in terms of classification, BV belongs to electrical equipment connection wires, fixed wiring wires, and YJV belongs to power cables.

Voltage level BV: generally 300 500, YJV

Name: BV is a single-core wire called YJV is a multi-core cable.

YJV: copper core XLPE insulated PVC sheathed power cable.

Name】 YJV Power Cable.

Full name] XLPE insulated PVC sheath Power cable Y---Polyethylene J--- XL V---PVC sheath [Number of cores] single core, 2 cores, 3 cores, 4 cores, 5 cores +1, etc.

Specifications] square to 240 square meters.

Color] Black.

Copper] national standard oxygen-free copper (copper).

Sheathing] PVC

Standard] This product is produced according to the GB12706 "Rated Voltage 35KV Copper Core, Aluminum Core Plastic Insulated Power Cable" standard, and the cable can also be customized according to user needs.

Uses] suitable for indoor, cable trenches, pipelines, tunnels, etc., can also be buried in loose soil, can not withstand the action of external force, generally for the main road of circuit transmission, rated voltage for power line transmission and distribution.

General rated voltage] (u0 u).

Characteristics] 1The maximum temperature rating of the cable conductor is 90°C, and in the case of a short circuit (the maximum duration does not exceed 5s), the maximum temperature of the cable conductor does not exceed 250°C.

2.The ambient temperature when laying the cable should not be below 0°C

3.Allowable bending radius when laying: single-core cable is not less than 15 times the outer diameter of the cable; The multi-core cable is not less than 10 times the outer diameter of the cable.

It's a cable. The name of the YJV cable model is: Requirements for the use of XLPE insulated PVC sheathed power cables.

Operating temperature. The maximum rated operating temperature of the conductor is 90

Conductor short-circuit temperature.

The maximum temperature shall not exceed 250 °C, and the maximum time shall not exceed 5 seconds.

Installation and laying temperature.

The cable installation and laying temperature is not less than 0

Laying in air: ambient temperature 40

Laying in the soil: ambient temperature 25

It is a cable, copper core conductor XLPE insulated PVC sheathed power cable.

It is a cable, a cross-linked polyethylene cable.

BV wire and YJV wire are two common types of wire, and their main differences are in the following aspects:

1.Structure: BV wires are single-core rigid wires that consist of an inner conductor and an outer insulation. YJV wires, on the other hand, are multi-core flexible wires that usually consist of multiple stranded conductors, insulation, and a sheath for the outer sheath of the spindle row.

2.Uses: BV wires are mainly used for fixed laying inside buildings, such as walls, floors and flower pots; YJV wires are commonly used in indoor power transmission systems, such as residences, industrial buildings, and public facilities.

3.Conductor material: The conductor of the BV electric cherry blossom wire is usually made of copper or aluminum.

Copper conductors have good electrical conductivity and corrosion resistance, and are often used for high-load or long-distance power transmission. Aluminium conductors are lightweight, inexpensive and suitable for low-load or short-distance transmission. The conductor of YJV wire is generally made of copper.

4.Current carrying capacity: Since the BV wire is a hard wire, its conductor diameter is relatively large, so it has a high current carrying capacity. The YJV wire is a flexible wire, and the diameter of the pilot tunnel is small, so its current carrying capacity is usually low.

5.Safety: BV wires are generally suitable for fixed laying because they are stiff and need to be pre-fixed during installation. The YJV wire is more suitable for use in mobile or curved environments due to its good flexibility and relatively flexible installation.

It is important to note that these are some common differences, and the specific use cases and requirements may vary depending on the application environment and region. In actual use, it is necessary to select the appropriate wire type according to the specific needs.

The difference is obvious: in terms of classification, BV belongs to electrical equipment connection wires, fixed wiring wires, and YJV belongs to power cables.

Voltage level BV: 300 500 in a sail royal style, YJV name: Zhenzhan BV is a single-core called wire YJV is multi-core called cable.

There are also differences in structure: BV is generally only a single core, and there is a layer of insulating travel rock insulation material PVC long-term allowable working temperature is only 70 degrees, YJV is mostly multi-core, with insulation layer and sheath layer, insulating cross-linked polyethylene sheath PVC long-term allowable working temperature is 90 degrees.

<>1. The BV wire is a copper core PVC insulated wire.

2. The classification and use are used to distribute the current, which belongs to the category of cloth wires and is represented by the letter "b";

3. The conductor material is copper, which is represented by the letter "T", and the copper core conductor in the cloth wire is omitted;

4. The insulating material is polyvinyl chloride, which is represented by the word "V";

5. The structure of the cloth wire is simple and auspicious, in addition to the above three points, some of them have a sheath, and the sheath material is polyvinyl chloride and is also represented by the letter "V"; If the sheath material is rubber, it is indicated by the letter "X". If there is no sheath and there is no back, there is no need to indicate it. For example, BVV stands for copper core PVC insulated PVC sheathed round wire.

The name of the BVV cable model is: copper core PVC insulated PVC sheathed round cable (wire).

The name of the YJV cable model is: XLPE insulated PVC sheathed power cable.

The insulation-cross-linked polyethylene of the cable is to convert the polyethylene with linear molecular structure into cross-linked polyethylene with three-dimensional network structure by chemical and physical methods, thereby greatly improving the thermomechanical properties of polyethylene and maintaining excellent electrical properties.

The maximum rated working temperature of the conductor of XLPE insulated power cable is 90, which is higher than that of PVC insulated and polyethylene insulated cables, so the current carrying capacity of the cable is further improved.

There is no strict division according to the classification according to voltage, but only according to the generally accepted statement in the industry. According to the voltage used, YJV cables can be divided into:

1kV and below are low-voltage cables;

1kV 10kV is medium voltage cable;

10kV 35kV is high-voltage cable;

35 220kV is UHV cable.

Cable is a unified name, including power cables, communication cables, etc., I don't know what kind of cable you need.

Definition 1: A wire made of one or more mutually insulated conductors and an outer insulating protective layer that transmits electricity or information from one place to another.

Definition 2: A rope-like cable, usually made up of several or groups of wires (at least two in each group), each of which is insulated from each other and is often twisted around a center, with a highly insulating covering on the outside. The cable has the characteristics of internal energizing and external insulation.

As far as power cables are concerned, the main models are: VV, BJV, VV29, BJV, ZR, NH and other models, as for the specifications, there are too many.

There is no such thing as a cable of this model!

BV is the most conventional and simple wire, a layer of insulation is added to the outside of the single-core copper, RJV may be softer, as long as the square number is reached, the general application should be no problem, the current carrying capacity is reached, and there is no heat. BV5*10 I haven't seen this, 5*10 is multi-core, it should be a cable, I have only seen VV5*10 (PVC insulated PVC sheathed power cable 5 cores 10 square).

The difference between BV and RJV is:

RJV wire: PVC insulated connecting flexible wire. It is made of multiple conductors stranded and then wrapped with a layer of PVC insulating plastic, and the structure is simple.

The conductor cross-sectional area varies from square to 10 square meters, and is mainly used for connecting wires in various equipment; BV wire: copper core PVC insulated wire. The structure is the same as that of the RJV wire, and the conductor is a single copper wire (the RJV wire conductor is a hinged combination of multiple thin copper wires).

It is mainly used for internal wiring of mechanical equipment and home decoration wiring.

BV-copper core plastic hard wire.

RJV-Stranded copper core hard wire.