First, bare copper wire

Bare wire and bare conductor products refer to conductive wire without insulation and sheath, mainly including bare single wire, bare stranded wire and profile three series of products.

Copper aluminum single wire: including soft copper single wire, hard copper single wire, soft aluminum single wire, hard aluminum single wire. Mainly used as a variety of wire and cable semi-products, a small amount of communication wire and motor appliances manufacturing.

Bare stranded wire: including hard copper stranded wire (TJ), hard aluminum stranded wire (LJ), aluminum alloy stranded wire (LHAJ), steel core aluminum stranded wire (LGJ) is mainly used for the connection of electrical equipment and electronic appliances or components, the specifications of the above various stranded wires range from 1.0-300mm2.



Second, power cable

Power cable in the backbone of the power system for the transmission and distribution of high-power power cable products, including 1 ~ 330KV and above various voltage levels, various insulation power cables.

The section is 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, 800mm2, and the core number is 1, 2, 3, 4, 5, 3+1, 3+2.

Power cables are divided into low voltage cables, medium voltage cables, high voltage cables and so on. According to the insulation conditions are divided into plastic insulated cables, rubber insulated cables, mineral insulated cables and so on.

Three, control cable

This kind of cable structure and power cable is similar, is characterized by only copper core, no aluminum core cable, conductor cross-section is small, the number of cores is more, such as 24*1.5, 30*2.5...

Suitable for AC rated voltage 450/750V and below, power stations, substations, mines, petrochemical enterprises and other stand-alone control or unit equipment control. In order to improve the ability of control signal cable to prevent internal and external interference, shielding layer is mainly adopted.

Common models are KVV, KYJV, KYJV22, KVV22, KVVP. Model meaning: "K" control cable class, "V" PVC insulation, "YJ" crosslinked polyethylene insulation, "V" PVC sheath, "P" copper wire shield.

For the shielding layer, our common KVVP is copper wire shielding, if it is copper tape shielding, that is, KVVP2, if it is aluminum-plastic composite tape shielding, that is, KVVP3. The shielding layers of different materials have their own characteristics and functions.


Four, wiring

Mainly used for household and distribution cabinets, friends who open hardware stores are most familiar with, often said that the BV line belongs to the cloth wire. Models are BV, BLV, BVR, RVV, RVVP, BVVB...

In the model representation of wire and cable, this B is often seen, and different places represent different meanings.

Take BVVB for example, the beginning of B is the meaning of wire, it is to indicate the application classification of the cable, just like JK means overhead cable, K means control cable. The B at the end represents the flat type, which is an additional special requirement for the cable. The meaning of BVVB is: copper core polyvinyl chloride insulated polyvinyl chloride sheathed flat cable.

5. Overhead insulated cable

Overhead cable we are also very common, it is characterized by no jacket. Many people have three misunderstandings about such cables, which are corrected here.

First, its conductors are not only aluminum, but also copper conductors (JKYJ, JKV) and aluminum alloys (JKLHYJ). Now there are also steel core aluminum stranded overhead cables (JKLGY).

Second, it is not only single core, the common is generally single core, but it can also be composed of several conductors.

Third, the voltage level of the overhead cable is 35KV and below, not 1KV and 10KV.

6. Special cables

Special cables are cables with special functions, mainly including flame retardant cables (ZR), low smoke halogen-free cables (WDZ), fire-resistant cables (NH), explosion-proof cables (FB), rat-proof cables and termite-proof cables (FS), water-resistant cables (ZS), etc.

Flame retardant cable (ZR), low smoke halogen-free cable (WDZ) : mainly suitable for important power and control systems. When the line encounters a fire, the cable can only burn under the action of the external flame, the amount of smoke is small, and the harmful gas (halogen) in the smoke is also very small.

When the external flame disappears, the cable can also extinguish itself, so that the fire to the human body and property damage is reduced to a minimum. Therefore, this kind of cable is widely used in petrochemical, electric power, metallurgy, high-rise buildings and densely populated and other important places.

Refractory cable (NH) : mainly suitable for particularly important power and control systems. When the line is in case of fire, the fire-resistant cable can resist the high temperature of 750~800 ° C for more than 90 minutes to ensure safe power transmission to win sufficient fire fighting and disaster reduction time.

In the face of special occasions, new products are constantly derived, such as fire-resistant cables, fire-retardant cables, low-smoke halogen free/low-smoke low-halogen cables, termite-proof/rat-proof cables, oil/cold/temperature/wear-resistant cables, radiation cross-linked cables, etc.


Qingdao Tianxing Cable Co., Ltd. is a technology enterprise specializing in the production of wire and cable in Shandong Province, with more than 150 sets of domestic excellent cable production equipment and testing equipment, excellent production technology, modern testing equipment, to ensure stable product quality and timely supply. The company's main products are power cable, mineral cable, high life wire and cable, radiation crosslinked cable, control cable, computer cable, photovoltaic cable, communication cable, data cable, low smoke halogen free cable, flame retardant series wire and cable.