Decoding (marking) of cable and wire designations. With aluminum cores
Explanation of cable VVGng(A)-LSLTx:
B - Insulation – low-grade PVC plastic fire danger
Vng-LS - Shell - made of PVC plastic compound of reduced fire hazard
D - Lack of protective coverings
(A) - Category for performance in terms of indicators fire safety
LTx - With low toxicity of combustion products
Design elements of the VVGng(A)-LSLTx cable:
1. Current-carrying conductor - copper, single-wire or multi-wire, round or sector-shaped, class 1 or 2 according to GOST 22483-77.
2. Insulation - made of PVC plastic with reduced fire hazard, insulated cores have a distinctive color.
3. Twisting - the insulated cores of multi-core cables are twisted.
4. The inner shell is made of PVC plastic compound of reduced fire hazard with filling between the cores.
5. Shell - made of PVC plastic with reduced fire hazard.
Scope of application of the VVGng(A)-LSLTx cable:
VVGng(A)-LSLTx cables are designed for transmission and distribution of electricity in stationary installations at a rated alternating voltage of 0.66 and 1 kV with a frequency of up to 100 Hz or at a constant voltage of up to 1.5 kV, maintaining operability in case of fire.
Operating and installation conditions for the VVGng(A)-LSLTx cable:
The cables are intended for use in buildings of functional fire hazard classes F1-F3, including preschool buildings educational institutions, specialized homes for the elderly and disabled, hospitals, dormitory buildings of boarding educational institutions and children's institutions, hotels, dormitories, dormitory buildings of sanatoriums and rest homes general type, campsites, motels, boarding houses, as well as for entertainment, club, sports facilities, buildings of public service organizations, subways, as well as for nuclear energy facilities outside the containment zone of the nuclear power plant, as well as for operation in explosive zones of class B-1a
Fire hazard class according to GOST R 53315-2009 - P1b.1.2.1.2
Climatic modification UHL, placement categories 3 and 4 according to GOST 15150-69
Operating temperature range: from -50 0 C to +50 0 C
Relative air humidity at temperatures up to +35 0 C up to 98%
Laying without preheating is carried out at an air temperature not lower than -15 0 C
Smallest bend radius:
- for single-core cables 10 max. outer diameters of the cable;
- for multi-core cables 7.5 max. outer diameters of the cable;
Cables do not spread fire when laid in groups according to category A
Smoke formation during combustion and smoldering of cables does not lead to a decrease in light transmission in the test chamber by more than 50%.
Mass fraction of hydrogen chloride released during combustion of polymer materials, no more than - insulation - 100 mg/g,
- outer sheath and protective hose - 80 mg/g,
- inner shell and separating layer - 50 mg/g,
The maximum heating temperature of the cores under the condition of non-ignition of the cable during a short circuit is no more than 350 0 C
The construction length of the cables is set when ordering
Cables are environmentally friendly
The service life of the VVGng(A)-LSLTx cable is at least 30 years if the requirements for operation, transportation and storage are met.
You can order from us cable couplings (connecting, end) for cable VVGng(A)-LSLTx.
We recommend ENSTO, RAYCHEM, Progress couplings.
Power cables with plastic insulation, flame retardant, low smoke and gas emissions for voltages up to 1 kV (ng-LS) TU 16.K71-310-2001
Application area
For transmission and distribution electrical energy in stationary installations at alternating voltages of 0.66 and 1 kV and constant voltages up to 1 kV. Cables are manufactured for general industrial use and nuclear power plants for supply to the domestic market and for export. For use in NPP systems of classes 2, 3 and 4 according to classification OPB-88/97 (PNAEG-01-011-97). Climatic version of cable UHL-T, placement category 5 according to GOST 15150-69.
The cables are recommended for use in the construction of residential buildings, public buildings, facilities nuclear energy, metro. The cables correspond to the best foreign analogues.
Rated voltage |
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from -50°С to +50°С |
|
Maximum permissible heating temperature of cable cores in emergency mode |
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7.5 dia. cable |
|
Service life not less |
|
Fire resistance of cables |
at least 90 minutes |
Cables are made 1, 2, 3, 4, 5-core (A) |
|
 |
(A) VVGng-LS
|
 |
(A) VBBShvng-LS
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| Brand | Design | terms of Use |
| VVGng5LS AVVGng5LS |
Veins– single-wire or multi-wire copper (VVGngQLS) or aluminum (AVVGngQLS) conductor; Insulation Outer shell |
Laying in fire hazardous areas provided there is no danger |
| VVG5Png5LS AVVG5Png5LS |
Veins– single-wire copper (VVGQPngQLS) or aluminum (AVVGQPngQLS) conductor; Insulation– PVC plastic compound of reduced fire hazard. Insulated cores are laid parallel in one plane; Outer shell– PVC plastic compound of reduced fire hazard. |
|
| VBBShvng5LS AVBBShvng5LS |
Veins– single-wire or multi-wire copper (VBBShvngQLS) or aluminum (AVBbShvngQLS) conductor; Insulation– PVC plastic compound of reduced fire hazard; Inner shell made of PVC of reduced fire hazard; Armor made of two galvanized steel strips; Outer shell– PVC plastic compound of reduced fire hazard. |
They are laid in cable structures and premises, including in fire hazardous areas in the absence of tensile forces during operation. |
Outside diameter, mm |
Estimated weight, kg/km |
|
WITH ALUMINUM CONDUCTORS |
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|
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Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
|
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard |
||
3 x 4+1 x 2.5 (solid) |
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3 x 6+1 x 2.5 (solid) |
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3 x 6+1 x 4 (olzh) |
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3 x 10+1 x 4 (olzh) |
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3 x 10+1 x 6 (olzh) |
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3 x 16+1 x 6 (olzh) |
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3 x 16+1 x 10 (olzh) |
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3 x 25+1 x 10 (ozh) |
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Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
AVBbShv ng-LSH |
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3 x 6+1 x 4 (olzh) |
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3 x 10+1 x 6 (olzh) |
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3 x 16+1 x 10 (olzh) |
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3 x 25+1 x 16 (olzh) |
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3 x 35+1 x 16 (olzh) |
||
3 x 25+1 x 16 (olzh) |
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3 x 35+1 x 16 (olzh) |
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3 x 50+1 x 25 (olzh) |
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3 x 120 (cold)* |
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3 x 120+1 x 35 |
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3 x 150+1 x 50 |
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3 x 185+1 x 50 |
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Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions |
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
|
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3 x 4+1x2.5 (cool) |
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3 x 6+1x2.5 (olzh) |
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3 x 6+1 x 4 (olzh) |
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3 x 10+1 x 4 (olzh) |
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3 x 10+1 x 6 (olzh) |
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3 x 16+1 x 6 (olzh) |
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3 x 16+1 x 10 (olzh) |
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3 x 25+1 x 10 (ozh) |
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3 x 25+1 x 16 (olzh) |
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3 x 35+1 x 16 (olzh) |
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3 x 120+1 x 70 |
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3 x 150+1 x 70 |
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3 x 185+1 x 95 |
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3 x 240+1 x 120 |
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* With round cores.
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
WITH COPPER CONDUCTORS |
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Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard with a protective cover type BbShv with a PVC hose of reduced fire hazard |
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard in a flat design |
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard |
||
3 x 1.5+1 x 1 (solid) |
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3 x 1.5+1 x 1.5 (solid) |
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3 x 2.5+1 x 1.5 (solid) |
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3 x 4+1 x 2.5 (solid) |
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3 x 6+1 x 2.5 (solid) |
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3 x 6+1 x 4 (olzh) |
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3 x 10+1 x 4 (olzh) |
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3 x 10+1 x 6 (olzh) |
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3 x 16+1 x 6 (olzh) |
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3 x 16+1 x 10 (olzh) |
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3 x 25+1 x 10 (ozh) |
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3 x 25+1 x 16 (olzh) |
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3 x 35+1 x 16 (olzh) |
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Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard with a protective cover type BbShv with a PVC hose of reduced fire hazard |
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard in a flat design |
||
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
Power cable with insulation and sheath made of polyvinyl chloride compositions of reduced fire hazard |
||
3 x 1.5+1 x 1 (solid) |
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3 x 1.5+1 x 1.5 (solid) |
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3 x 2.5+1 x 1.5 (solid) |
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3 x 4+1 x 2.5 (solid) |
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3 x 6+1 x 2.5 (solid) |
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3 x 6+1 x 4 (olzh) |
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3 x 10+1 x 4 (olzh) |
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3 x 10+1 x 6 (olzh) |
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3 x 16+1 x 6 (olzh) |
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3 x 16+1 x 10 (olzh) |
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3 x 16+1 x 6 (olzh) |
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3 x 25+1 x 10 (ozh) |
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3 x 25+1 x 16 (olzh) |
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3 x 35+1 x 16 (olzh) |
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3 x 50+1 x 16* |
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3 x 120+1 x 35 |
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3 x 120+1 x 70 |
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3 x 150+1 x 50 |
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3 x 150+1 x 70 |
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3 x 185+1 x 50 |
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3 x 185+1 x 95 |
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3 x 240+1 x 70 |
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3 x 240+1 x 120 |
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Power cables, with PVC insulation, flame retardant, with low smoke and gas emission for voltage 6 kV TU 16.K10-016-2003
Application area
For transmission and distribution of electrical energy in stationary installations at alternating voltage up to 6 kV. Cables are manufactured for general industrial use and nuclear power plants for supply to the domestic market and for export. For use in NPP systems of classes 2,3 and 4 according to classification OPB-88/97 (PNAEG-01-011-97). Type of climatic version of the cable - B, placement category 5 according to GOST 15150-69.
terms of Use
VVGng-LS, AVVGng-LS, for installation in fire hazardous areas, provided there is no danger of mechanical damage. VBVng-LS, AVBVng-LS - for installation in cable structures and premises, incl. in fire hazardous areas in the absence of tensile forces during operation.
Main technical and operational characteristics
Rated voltage |
|
Temperature environment during cable operation |
from -30°С to +50°С |
Relative air humidity (at temperatures up to +35°C) |
|
Minimum cable laying temperature without preheating |
|
Maximum long-term permissible working temperature lived |
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Maximum permissible heating temperature of cable cores in emergency mode (or overload mode) |
|
Maximum temperature of the cores under the conditions of non-ignition of the cable during a short circuit |
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Life time |
|
Warranty life of the cable |
Number and nominal cross-section of cores, mm 2 |
Estimated weight, kg/km |
||
Power cable with insulation and sheath made of polyvinyl chloride plastic compound of reduced fire hazard, armored |
|||
Number and nominal cross-section of cores, mm 2 |
Cable outer diameter ( geometric dimensions), mm |
Estimated weight, kg/km |
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Power cable with insulation and sheath made of polyvinyl chloride plastic compound of reduced fire hazard |
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Power cable with flame retardant polyvinyl chloride insulation for alternating voltage up to 0.66 kV with a frequency of 50 Hz NYMng-LS TU 3521-039-05755714-2007
Application area
The cable is intended for the transmission and distribution of electrical energy in stationary installations for alternating voltage up to 0.66 kV with a frequency of 50 Hz. Climatic version of the cable is UHL, T, placement categories 1-5 according to GOST 15150-69. Fire safety class according to NBP 248-97- PRGP1.
terms of Use
The cable is intended for installation of electrical wiring and cable lines in industrial, residential and public buildings and structures, as well as in cable structures to ensure the safe operation of electrical equipment of protection class 1 electrical safety along with cables of the VVGng type. The cable can be used for laying power and lighting networks in explosive zones of classes V-1b, V-1g, V-IIa, as well as for lighting networks in explosive zones of class B-Ia.
Main technical and operational characteristics
Rated voltage |
|
Ambient temperature during cable operation |
from -30°С to +50°С |
Relative air humidity (at temperatures up to +35°C) |
|
Minimum cable laying temperature without preheating |
|
Limit long-term permissible operating temperature of the cores |
|
Minimum permissible bending radius when laying |
4 dia. cable |
Life time |
|
Warranty life of the cable |
Number and nominal cross-section of cores, mm 2 |
Outer diameter, mm |
Estimated weight, kg/km |
NYMng-LS |
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Core colors
Number of cores |
NYMng-LS-J |
NYMng-LS-O |
Blue, brown |
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Green-yellow, blue, brown |
Blue, black, brown |
|
Green-yellow, blue, black, brown |
Blue, black, brown, black or brown |
|
Green-yellow, blue, black, |
Blue, black, brown, black or brown, black or brown |
Information provided by OJSC "Sevkabel-Holding" specifically for the site
If you have not found information on the products you are interested in, contact the forum and you will certainly receive an answer to your question. Or use the form to contact the portal administration.
For reference: The “Directory” section on the website is intended for informational purposes only. The directory was compiled by sampling data from open sources, as well as information coming from cable manufacturers. The section is constantly updated with new data and improved for ease of use.
List of used literature:
Electrical cables, wires and cords.
Directory. 5th edition, revised and expanded. Authors: N.I. Belorussov, A.E. Sahakyan, A.I. Yakovleva. Edited by N.I. Belorussov.
(M.: Energoatomizdat, 1987, 1988)
“Optical cables. Manufacturing plants. General information. Structures, equipment, technical documentation, certificates"
Authors: Larin Yuri Timofeevich, Ilyin Anatoly Aleksandrovich, Nesterko Victoria Aleksandrovna
Year of publication 2007. Publishing house "Prestige" LLC.
Directory "Cables, wires and cords".
Publishing house VNIIKP in seven volumes, 2002.
Cables, wires and materials for the cable industry: Technical reference book.
Comp. and editing: Kuzenev V.Yu., Krekhova O.V.
M.: Publishing house "Oil and Gas", 1999
Cable products. Directory
Installation and repair of cable lines. Electrician's Handbook
Edited by A.D. Smirnova, B.A. Sokolova, A.N. Trifonova
2nd edition, revised and expanded, Moscow, Energoatomizdat, 1990
Most types of equipment, instruments, tools and machinery in production, trade and everyday life are connected to an electrical network that has an alternating voltage of up to 1 kV. This means that in these networks the distribution and supply of electricity is carried out via a safe cable. Today, one of the most popular products for food and lighting in open and internal view This is a VVG cable. There are options for its implementation.
Types and types of VVG cable
Any cable or conductor has a special marking, by which the characteristics of the product can be determined.
Novice electricians, who encounter abbreviations for the first time, often do not understand the difference between VVGng and VVG, and also from VVGng-LS. Let's figure it out:
- VVG is equipped with conventional PVC insulation, which does not have fire-retardant and self-extinguishing qualities.
- The insulating layer of VVGng contains halogen elements, thanks to which the combustion process is neutralized.
- Sheath of current-carrying conductors VVGng-ls when a fire occurs, no smoke or gas is released due to the use of halogen-free polyvinyl chloride (this is a big plus for VVGng-ls).
- VVGngfr-ls is a similar model, but fire resistant. If this type of cable catches fire, the emission of gas and smoke is low. If you use a group gasket, then there will be no spread of combustion.
- Halogen-free materials are used in the production of conductor VVGng-fr-ls, which distinguish this product from other brands. Halogen-free plastic material has high level insulation and produces the amount of smoke within normal limits. Fire safety is the main feature of the VVG ngfr-ls cable type.
What is VVG?
Often in various instructions For electrical installation work, it is suggested to use non-flammable conductor VVGng. In terms of quality/price ratio it is the best option. This VVGng conductor is actually very versatile, because it is practical to use in buildings made of flammable materials and in buildings that have high humidity.
What can the marking say? First, let's look at what conductor markings exist. If you know the decoding of the letters in the given cable markings, you can easily determine its properties. Below is a list of the main characteristics by which it is quite simple to separate all conductors.
1. Material used for the production of conductive core:
- no designation, it's copper;
- if the letter is A, it is aluminum.
2. Material from which the insulation is made For conductors :
- if the letter is B, then polyvinyl chloride was used;
- if the letters are Pv, then polyethylene was used;
- if the letter is P, then polymer insulation was used.
3. Cable armor:
- if the letter is B, then armored;
- if the letter is G, then there is no armor, bare cable.
4. Shell (outer insulation):
- if the letter is P, then the shell is made of polymer;
- if the letters Шп, then there is a protective hose made of polyethylene;
- if the letters are Shv, then the hose is protective;
- if the letter is B, then the insulation is made of polyvinyl chloride.
5. Fire safety:
- if there is a marking ng-frhf, then when the conductor is carried out in groups, it does not spread fire, and during combustion and smoldering, no corrosive substances are formed in the form of gas;
- if there is a marking ngfr-ls, then when the conductor is carried out in a group, combustion does not spread, the formation of smoke and gas is reduced;
- if there is a marking ng-hf, then when the conductor is carried out in groups, it does not spread combustion, and during combustion and smoldering no corrosive substances are formed in the form of gas;
- if there is an ng-ls marking, then the gas and smoke emission is reduced; when the ng-ls conductor is carried out in a group, combustion does not spread;
- if there is an NG marking, then when the conductor is held in a group, it will not spread fire;
- If there is no marking, then when laying a single conductor, fire will not spread.
If you follow the above, you can decipher the abbreviation VVGng: the first letter B means that the insulation of the conductors was made of polyvinyl chloride, the second letter B indicates that the insulation of the outer shell was also made of polyvinyl chloride, the third letter G indicates that there is a special layer of protection, there is no armor.
On professional language For electricians, the abbreviation VVG means approximately: the letter V is vinyl, the letter V is vinyl, the letter G is bare. And the letters ng indicate that if you use a group laying of this conductor, it will not support combustion. This is an important indicator for cases when it is necessary to lay a conductor in places where there is high probability fire. After all, the main thing is safety. The marking does not contain the letter A, which means that the conductor has conductive conductors made of copper.
This conductor happens made in two modern modifications : with the ending ng-ls - this means that during combustion there is a reduced release of smoke and gas (this is what ng-ls is good for); with the ending ng-hf - this means that during the combustion of the cable there is no release of corrosive substances in the form of gas. These modifications have improvements - this is fr (in other words, fire resistance, which differs from ng-ls).
Often with the usual VVG you can find cables that have the letter “P” at the end of the marking. Judging by the technical data, they are no different, but the slight difference lies in the structure - it is flat. This means that decoding the cable VVG p sounds like this: the letter V is vinyl, the letter B is vinyl, the letter G is bare, the letter P is flat.
Cable routing options
Open VVG cable laying
If you follow technical parameters of this cable, its open installation is only permitted on surfaces and structures made of flame-resistant or non-flammable materials, for example plaster, concrete, brick, plastered surface, etc.
VVG cable laying open method allowed to be used under suspended structures such as cables, etc. These structures must provide sufficiently reliable installation. When laying the cable, any possibility of mechanical action on it should be excluded.
If there is a risk of damage mechanically cable product, the necessary additional protection should be installed. Additional protection should be used when laying cable products in an open manner on combustible wood surfaces. In this case, installation should be carried out using a cable channel, corrugated hose, metal hose, pipe and other types of protection.
Laying the VVG cable in a hidden way
This cable installation option remains the most popular for residential premises. The cable is laid under the plaster, in voids, in grooves, etc.
With this installation option mechanical damage is practically excluded, therefore the use of additional protection is not expected, with the exception of wall voids in wooden houses.
Hidden installation of cables in pipes or other non-flammable materials is permitted here. Available regulations that relate to hidden electrical wiring. They define correct execution hidden way cable installation.
Laying VVG cable in the ground
It is known that It is not allowed to lay a cable of this brand underground without using special protection methods. All this is due to the fact that there is no protection that will protect the cable from any mechanical influences.
Installation of VVG conductor underground is possible only in special sealed boxes and only along overpasses and cable structures.
DESIGN
1. CURRENT CONDUCT- copper, single-wire, round, class 1 according to GOST 22483, with a nominal cross-section up to 16 mm 2 inclusive.
2. ISOLATION- made of polyvinyl chloride composition of reduced fire hazard. The insulated cores of multicore cables have a distinctive color.
3. INSULATED CONDUCTORS- laid in one plane.
4. INNER EXTRUDED CASING- applied over insulated conductors laid in one plane, made of PVC composition of reduced fire hazard, which fills the gaps between the conductors. The thickness of the inner shell is at least 0.3 mm.
5. OUTER SHELL- made of PVC composition of reduced fire hazard. For cables with a cross-section of round conductive cores up to 16 mm 2, it is allowed to apply an outer sheath while simultaneously filling the gaps between the cores. In this case, the inner extruded shell is not applied.
APPLICATION
Flame retardant cables with low smoke and gas emissions are designed for transmission and distribution of electricity in stationary installations at a rated alternating voltage of 0.66 kV and 1 kV frequency of 50 Hz. Cables are manufactured for general industrial use and nuclear power plants for supply to the domestic market and for export. The cables are intended for use in cable structures and premises, including for use in nuclear power plant systems of classes 2, 3 and 4 according to classification OPB-88/97 (PNAE G-01-011-97).
Cable brand VVG-P ng(A)-LS do not spread combustion when laid in bundles.
SPECIFICATIONS
| Type of climatic version of cables B, placement categories 1-5, placement category 5 according to GOST 15150-69 | ||
| Operating temperature range | from –50°С to +50°С | |
| Relative air humidity at temperatures up to +35°C | up to 98% | |
| Laying and installation of cables without preheating is carried out at a temperature not lower than | -15°С | |
| Minimum bending radius when laying | 7.5 outer diameters | |
| Rated frequency | 50 Hz | |
| Test AC voltage with a frequency of 50 Hz: | ||
| for voltage 0.66 kV | 3 kV | |
| for voltage 1 kV | 3.5 kV | |
| Long-term permissible heating temperature of cable cores during operation | +70°С | |
| Limit temperature of current-carrying conductors of cables under the condition of non-ignition of the cable during short circuit. | +400°С | |
| Construction length of cables for sections of main cores: | ||
| from 1.5 to 16 mm 2 | 450 m | |
| when supplied in coils, it is agreed between the consumer and the manufacturer | ||
| Warranty period | 5 years from the date the cable was put into operation, but no later than 6 months from the date of manufacture | |
| Cable life | 30 years | |
