KGN cable: abbreviation decoding, device and characteristics, scope

The power cable, denoted by the abbreviation KGN, is a type of conductor, which is marked - "KG". It possesses high oil and fire resistance, due to which the field of application of the KGN cable is extensive. This type is very popular with electricians, as it is suitable for connecting electrical appliances with high power.

Decoding and design characteristics

You need to know that the decoding of the KGN cable has two options.

The first means the following:

• The letter "K" indicates that this is a cable.
• "G" indicates such a positive property as flexibility.
• "N" means "non-flammable".

The second variant of decoding the letter "H" is also associated with fire resistance. It indicates the type of rubber from which the insulating layer of this wire is made. The material is called nairite.

There are two additional varieties that have a slightly different designation. One of them is labeled "KG-KhL" and is intended for use in cold climates.

Another type is "KG-T". It is suitable for tropical regions.

Arranged by CGN in the following way:

1. The central core, through which the electric current must pass, is made of copper. It consists of many wires. Its cross-section is round, and the class of flexibility according to the rules of GOST corresponds to the figure "5". The core of the wire can be coated with a special substance that prevents it from sticking to the insulating layer. Usually, a synthetic film acts as this substance.
2. The insulating layer is made of nairite rubber. Its color must strictly comply with the standards. Instead of rubber, another material, butadiene rubber, can also be used to create the insulating layer. Today this version of isolation is found more and more often, but the letter "H" in the abbreviation is still preserved.
3. In one cable, KGN can be either one or several copper conductive conductors at once. In the latter case, the wires are twisted with each other in increments of no more than 16 diameters. The rubber insulating layer is not always the topmost layer.
4. The insulating rubber layer is covered with another shell, which is also made of rubber. This is the topmost layer, and it must necessarily have such properties as oil resistance and incombustibility.

These characteristics distinguish this type of flexible wire. There can also be a separating layer between the two rubber layers, made of the same synthetic film or talc.

It is needed in order to prevent the two rubber layers from sticking to each other.

The letter "N" in the decoding for understanding the characteristics of the cable is key, since it is attributed to the name of the type of cable KG. KG in any case is flexible, but only KGN has an increased resistance to fire.

Cable parameters

Like any other cable, KGN has a certain area of ​​application, even though it has increased resistance to fire and oil.

Parameters and specifications KGN cables are as follows:

1. The operating temperature ranges from -30 ° C to +50 ° C. There is a special, called "tropical" type of this cable, which is designated as "KG-T". Its operating temperature can be 5 ° C higher.
2. The lowest gasket temperature without preheating is -15 ° C. In operating mode, copper conductors can be heated up to +75 ° C.
3. If an alternating current is used, then the voltage should not exceed 660 volts, and if a direct current passes through the wire, then the voltage can reach 1,000 volts. Volt.
4. AC frequency - 400 Hz.
5. The bending radius during installation must be at least 8 outer diameters.
6. The length of the cable may vary depending on its thickness. If the cross-sectional area does not exceed 35 sq. mm, then it can have a length of 150 m. If the cross-sectional area is more than 35 sq. mm, then the minimum wire length can be 100 m.

Usually manufacturers of KGN cable give a guarantee for their products for 6 months from the date of the start of operation. However, if the wire was purchased and has not yet begun to be used, then its warranty period is 12 months.

In fact, the wiring can last much longer: approximately 30 months.

Application area

Due to the special properties of the KGN cable, it can be used even in those conditions in which other wires quickly become unusable. It is not afraid of moisture, and therefore it can be laid under water, it was originally produced for use in shipbuilding.

In addition, KGN is not afraid of the effects of aggressive chemicals, and therefore it is suitable for use underground, for connecting mobile electrical equipment.

Main area where it is advisable to use KGN - rooms in which high humidity prevails, as well as garages, where the air contains a lot of gasoline and engine oil vapors. In residential buildings It is reasonable to use KGN only in cases where there is natural ventilation in the room. Quite often, KGN as wiring is mounted in basements.

Most often, the CHP is laid in those places where the sun's rays do not fall.

If you install it by air, you should not forget that the insulating layer is poorly resistant to ultraviolet rays, so you need to take care of additional protection from the sun.

KGN cable is one of the most common power conductors. Its main distinguishing feature is resistance to chemicals and fire.