In the age of high technology, we are very attached to the electrical grid. They encircle the entire globe, not only the operation of household and public devices, but also the central economic objects, including the Internet, depend on them. To ensure their smooth operation, there are many types of different conductive cables. Consider one of them marked AVBBSHV: decoding, specifications, scope.
Design
The AVBbShv power cable, the decoding of which is given below, has an aluminum electrical conductor at the base of the body. With a cross section of up to 10 mm2 it is characterized by a single-wire structure (1 core, "OJ"), over 16 mm2 - plexus of 2 and more thread. For ease of twisting, an additional zero core may be involved in the cable design, it may have a softer section and is always painted blue, and the ground conductor may be yellow-green. The remaining threads also have a different color for the convenience of distinguishing them and connecting them during installation.
Cable structure:
1 - aluminumround or sector conductor;
2 - dyed/colored PVC insulating sheath;
3 - armor consisting of 2 layers of steel or galvanized tape;
4 - heat-resistant PVC compound (polyethylene terephthalate film);
5 - PVC plastic outer shell.
When the cross section is over 6 mm2 Armored reinforcing tapes are covered with bitumen or other polymer, which additionally insulates the cable and gives it elasticity and plasticity. AVBBSHV decryption contains all the listed structural elements.
How to read the title
Deciphering the abbreviations of cable and wire brands always includes a design by which experts determine the type, the primary characteristic of conductive threads. Almost all conductive elements are produced by a variety of factories, however, each leaves the name and essence of exactly the one that was originally laid down. This order controls GOST 16442-80. When changing certain characteristics in a technological way, the manufacturer indicates the specifications according to which these features are made.
AVBbSHV power cable has the decoding of the letter part as follows:
A - indicates aluminum conductors that conduct current.
B - phase colored insulation material - PVC.
BB - the presence of two steel plates that can be galvanized.
Shv - outer cover made of PVC plastic.
Deciphering the marking of the wire cable AVBbShv includes not only material designations, but also technical indicators. For example, 4x10, which meansuse of 4 conductive cores of 10 mm2 in cross section each. Marking 3x10 + 1x6 (ozh) indicates the presence in the body of the wire of 3 aluminum threads of 10 mm each 2 and one with a section of 6 mm 2. There can be many such digital designations.
Specifications
This cable has the following specifications:
| Recommended mounting temperature | -15 |
| Temperature at which a short circuit occurs (4 sec) |
1600C |
| Permissible air humidity | 90-98% |
| Maximum allowable continuous heating temperature during operation | +700C |
| Maximum allowable bending radius | 7, 5-10 OD |
| Lifetime | Min. 30 years |
Outer diameters and weight of cables depend on specific brands and digital designations: they all have a different amount of materials in their structure. Also, each section value corresponds to the minimum construction length of the wire.
Application
The AVBbShv cable, the decoding of which indicates the presence of reinforcing steel elements and multilayer insulation in the wire, is widely used in the construction of industrial and civil conductive lines with a voltage of 1; 6; tenkW and frequency up to 50 Hz. Designed for distribution and transmission of electric current in stationary installations.
It is universal: suitable for laying in earth trenches, in flooded areas, rivers and other water bodies, underground tunnels in high humidity conditions, inside buildings, on overhead power lines. Such distribution is ensured by a body reinforced with two armors, which allows the wire to withstand increased tensile and temporary snow, wind loads, as well as numerous reliable insulation made of PVC polymers of different densities. As a rule, high-capacity cables are used for main routes, which, in turn, are additionally protected by a polymeric bitumen layer.
