Technical characteristics of AVVG cable

How to decipher the abbreviation?

The first thing we will tell you is how to decode the marking of the cable AVVG.So, the decoding according to GOST standards is as follows:

• A - aluminum conductors;
• B - the insulation of live conductors is represented by a PVC sheath;
• B - outer sheath also made of PVC plastic;
• Г - additional protection of the electric cable is absent( bare).

In addition to these four letters, the labeling may include a "T" or "P" prefix, through a dash."T" means that the conductor is made in a tropical version( not afraid of mold).The letter "P" makes it clear that the electrical cable is flat.

After the letters, according to the standard marking of the conductors, there are figures. The digital notation may look like this: АВВГ-660 3 * 25.The first digit( 660) is the operating voltage, which can be indicated either in Volts or in kV( 0.66).After the voltage indicate the number of cores and their cross-section. Also in parentheses you can notice the prefix "(ozh)", which indicates that current-carrying wires are single-wire.

This is how the decoding of the cable ABBG looks. As you can see, everything is quite simple and understandable!

Features of the design

Now let's briefly talk about the device electrical cable. As we have already said, current-carrying conductors of the conductor are aluminum( this is clearly seen in the photo).The number of veins can be from 1 to 6, and they can be either single-wire or multiwire.

As for the color marking of insulation, it complies with all GOST standards - zero blue, yellow-green ground. In order for the outer shell to separate without problems from the internal insulation, a lavsan ribbon can be laid between them. The cross-section of the cores can be different, unless the ABBG cable is two-core. Most often the smaller cross-section is just one vein( ground or zero, as in the picture below).In a six-conductor electric conductor 2 veins of a smaller size - both zero and "earth".

Video overview of the technical characteristics of the electric cable:

The main parameters of the

So, we have come to the most important part of the article - the description of the technical characteristics and operating conditions of the AVVG cable. Among the main parameters that you may need for electrical installation work are:

1. Rated voltage 660 and 1000 V;
2. Frequency of alternating current 50 Hz;
3. Cross-section of conductors from 2,5 to 240 mm2;
4. Operating temperature -50 to +50 ° C;
5. The maximum permissible heating of live conductors must not exceed + 70 ° C;
6. Electrical installation is allowed at temperatures from -15 ° C to + 50 ° C( basic condition of the gasket);
7. Service life 30 years;
8. Warranty period 5 years;
9. Minimum bend radius of 7.5 outside diameter of the electric cable;

As for the permissible current load, the insulation thickness, the mass and the active resistance of the AVBG cable, we have clearly demonstrated these values ​​in the table:

Scope of application

Well, the last question we would like to consider is the assignment of the cable AVVG and the conditions for its installation. This conductor can be used in the following electrical work:

• laying an overhead power line;
• laying of the network on cable racks, bridges and even in blocks;
• wiring in partially flooded, damp and dry rooms.
• wiring in explosive and flammable rooms.

As for laying the cable AVVG in the ground, you need to take into account that this type of electric cantilever is not armored, so with mechanical damages it will quickly fail. It is recommended to use an electric cable for underground laying only if there are no significant mechanical loads on the site, and the corrosive activity of the soil is low.

Here we have presented all the main technical characteristics of the cable AVVG, the decoding of its marking and, no less importantly, the purpose. We also recommend that you familiarize yourself with the characteristics of the PVA wire, which is no less often used by electricians!