Wire and cable VVGNG LS technical characteristics, description, purpose. VVGng cable: technical characteristics

Explanation (labeling) Cables and wires made in Russia

Explanation (marking) of abbreviations used to designate power cables with PVC (vinyl) and rubber insulation (according to GOST 16442-80, TU16.71-277-98, TU 16.K71-335-2004)

A - (first letter) aluminum core, if there is no letter - copper core.
AC - Aluminum core and lead sheath.
AA - Aluminum core and aluminum sheath.
B - Armor made of two steel strips with anti-corrosion coating.
Bn - The same, but with a non-flammable protective layer (non-flammable).
b – Without a pillow.
B - (first (in the absence of A) letter) PVC insulation.
B - (second (in the absence of A) letter) PVC shell.
D - At the beginning of the designation - this is a cable for mining, at the end of the designation - there is no protective layer over the armor or sheath (“bare”).
d - Waterproof tapes for sealing the metal screen (at the end of the designation).
2d - Aluminum polymer tape over a sealed screen.
Shv - Protective layer in the form of an extruded PVC hose (shell).
Шп - Protective layer in the form of an extruded hose (shell) made of polyethylene.
Shps – Protective layer made from an extruded hose made of self-extinguishing polyethylene.
K - Armor made of round galvanized steel wires, on top of which is applied protective layer. If it appears at the beginning of the designation, it means a control cable.
C – Lead sheath.
O - Separate shells on top of each phase.
R – Rubber insulation.
NR - Rubber insulation and sheath made of flame retardant rubber.
P - Insulation or shell made of thermoplastic polyethylene.
Ps - Insulation or shell made of self-extinguishing, non-flammable polyethylene.
Pv - Insulation made of vulcanized polyethylene.
BBG - Armor of profiled steel tape.
ng - Non-flammable.
LS - Low Smoke - low smoke and gas emissions.
KG - Flexible cable.

Cable with BPI - impregnated paper insulation (according to GOST 18410-73):

A - (first letter) aluminum core, in its absence - copper core by default. If in the middle of the designation after the symbol of the core material, then the aluminum sheath.
B – Armor made of flat steel strips (after the shell material symbol).
AB - Aluminum armor.
SB - (first or second (after A) letter) lead armor.
C – Lead shell material.
O – Separately leaded conductor.
P - Armor made of flat galvanized steel wires.
K - Armor made of round galvanized steel wires.
B – Paper insulation with depleted impregnation (at the end of the designation) through a dash.
b – Without a pillow.
l - The pillow contains an additional 1 Mylar ribbon.
2l - The pillow contains an additional double lavsan ribbon.
n – Non-flammable outer layer. Placed after the armor symbol.
Shv - The outer layer in the form of an extruded hose (shell) made of polyvinyl chloride.
Шп – Outer layer in the form of a pressed hose (shell) made of polyethylene.
Shvpg - The outer layer is made of a pressed hose made of low-flammability polyvinyl chloride.
(ozh) – Cables with single-wire conductors (at the end of the designation).
U - Paper insulation with increased heating temperature (at the end of the designation).
C – Paper insulation impregnated with a non-drip compound. Placed in front of the designation.

Control cable (according to GOST 1508-78):

A - (first letter) aluminum core, in its absence - copper core by default.
B - (second (in the absence of A) letter) PVC insulation.
B - (third (in the absence of A) letter) PVC shell.
P - Polyethylene insulation.
Ps - Insulation made of self-extinguishing polyethylene.
D - Lack of a protective layer (“bare”).
R – Rubber insulation.
K - (first or second (after A) letter) - control cable.
Besides KG - flexible cable.
F – PTFE insulation.
E - At the beginning of the designation - a power cable for special mine conditions, in the middle or at the end of the designation - a shielded cable.

Hanging wires:

A - Aluminum bare wire.
AC - Aluminum-Steel (the word “steel-aluminum” is more often used) bare wire.
SIP - Self-supporting Insulated Wire.
ng - Non-flammable.

Power, installation wires and connecting cords:

A - Aluminum, the absence of the letter A in the wire brand means that the current-carrying conductor is made of copper.
P (or Ш) – the second letter, denotes a wire (or cord).
R – Rubber insulation.
B – PVC insulation.
P – Polyethylene insulation.
N – Nairite rubber insulation.
The number of cores and cross-section are indicated as follows: put a dash; record the number of cores; put a multiplication sign; record the cross-section of the core.
Brands of wires and cords may also contain other letters that characterize other structural elements:
D - Double wire.
O - Braid.
T - For installation in pipes.
P - Flat with a dividing base.
G - Flexible.

Mounting wires:

M – Installation wire (placed at the beginning of the designation).
G - Multi-wire conductor (the absence of a letter indicates that the conductor is single-wire).
Ш - Polyamide silk insulation.
C - Film insulation.
B - Polyvinyl chloride insulation.
K - Nylon insulation.
L – Lacquered.
C - Fiberglass winding and braiding.
D - Double braid.
O - Polyamide silk braid.
E – Shielded.
ME - Enameled.

Explanation (labeling) of some special abbreviations:

KSPV - Cables for Transmission Systems in Vinyl sheath.
KPSVV - Cables Fire Alarm, Vinyl insulated, Vinyl sheathed.
KPSVEV - Fire Alarm Cables, with Vinyl insulation, with Screen, in Vinyl sheath.
PNSV - Heating wire, Steel core, Vinyl sheath.
PV-1, PV-3 - Wire with Vinyl insulation. 1, 3 - core flexibility class.
PVS - Wire in Vinyl Sheath Connecting.
SHVVP - Cord with Vinyl insulation, Vinyl sheathed, Flat.
PUNP - Universal Flat Wire.
PUGNP - Universal Flat Flexible Wire.

Rdecryption (marking) Cables and wires of foreign production

Power cable:
N – Indicates that the cable is manufactured according to the German VDE standard (Verband Deutscher Elektrotechniker - Union of German Electrical Engineers).
Y – PVC insulation.
H - Absence of halogens (harmful organic compounds) in PVC insulation.
M - Installation cable.
C – Availability of copper screen.
RG – Availability of armor.

FROR is an Italian-made cable, has specific designations according to the Italian standard CEI UNEL 35011:

F - corda flessibile - flexible core.
R - polivinilclorudo - PVC - PVC insulation
O - anime riunite per cavo rotondo - round, not flat cable.
R - polivinilclorudo - PVC - PVC sheath.

Control cable:

Y – PVC insulation.
SL - Control cable.
Li - Stranded conductor made according to the German VDE standard (see above).

Halogen-free fire-resistant cable:

N - Manufactured according to the German VDE standard (see above).
HX – Cross-linked rubber insulation.
C - Copper screen.
FE 180 - In case of fire, the integrity of the insulation, when using a cable without a fastening system, is maintained for 180 minutes.
E 90 - In the event of a fire, the cable's functionality when laid together with the fastening system is maintained for 90 minutes.

Mounting wires:

H - Harmonized wire (HAR approval).
N - Compliance with national standard.
05 -Rated voltage 300/500 V.
07 - Rated voltage 450/750 V.
V - PVC insulation.
K – Flexible core for stationary installation.

XLPE insulated cables:

N – Manufactured according to the German VDE standard (see above).
Y – PVC insulation.
2Y – Polyethylene insulation.
2X – XLPE insulation.
S - Copper screen.
(F) - Longitudinal sealing.
(FL) - Longitudinal and transverse sealing.
E - Three-core cable.
R - Armor made of round steel wires.

How to decipher the cable brand?

Let’s take as an example a very common cable: AVVG (ozh)-0.66 kV 4x35 and look at its markings.

4x35 - this cable has 4 cores, 35 sq. mm each. each. The number of cores for most groups of cables is from 1 to 5. But for control cables, for example, from 4 to 37. Each core has a cross-section. The cable has a cross-section range from 1.5 to 800 sq. mm. for low voltage cable.

0.66 kV - voltage. For this cable it is 660 V. Cables come in low voltage (0.38 -1 kV), medium (6-35 kV) and high (110-500 kV) voltage.

(ozh) - execution – single-core. This means that the vein is monolithic, seamless. If there is no “ozh” in the brand, this means, by default, that the design is stranded (mp) or multi-core (mn).

G – flexible or unarmored.

B – vinyl. Shell made of polyvinyl chloride (PVC) plastic.

B – vinyl. Insulation made of polyvinyl chloride (PVC) plastic.

A – aluminum. Aluminum conductor.

All letter markings start from the core. If the letter A is written, then the conductor is aluminum. If the letter A is missing, then the conductor is made of copper.

Depending on the group of use, the following symbols may appear in cable markings:

AVVG-P. Flat, insulated conductors are laid parallel in one plane.

AVVGz. Filled, filled with rubber compound.

AVVGng-LS. ng - non-flammable, PVC plastic compound of reduced flammability. LS - “low tuxedo” (low smoke emission), PVC of reduced fire hazard.

AVBbShv.

B – armor made of steel tapes

Ш - protective hose made of PVC plastic.

c - vinyl. Insulation made of polyvinyl chloride (PVC) plastic.

ASB2lG, ASKl, TsSB.

C – lead sheath.

2l – two lavsan ribbons

G – naked. Protective cover made of two galvanized steel strips.

K - protective cover made of round galvanized steel wires.

C – paper insulation impregnated with a non-drip compound.

K – control

E – common screen made of aluminum foil over twisted cores

APvBbShp.

P – insulation made of silanol cross-linked polyethylene.

p – outer shell made of polyethylene.

APvPu2g.

y – reinforced polyethylene shell

2d – “double sealed”, cross-linked polyethylene insulation with aluminum tape over a sealed screen.

KG – flexible cable.

Interpretation of wire markings.

Now let's look at the question of how to decipher the wire markings. Wires, like cables, are marked with letters, after which the number and cross-sectional area of ​​the current-carrying conductors are written down in numbers. When designating a wire, the following structure is adopted. The letter P is placed in the center, indicating the wire. The letters P may be preceded by the letter A, indicating that the wire is made of aluminum conductors; if there is no letter A, then the conductors are made of copper.

Following the letter P is a letter characterizing the material from which the wire insulation is made:

R - rubber insulation,

B - PVC (polyvinyl chloride) insulation

P - polyethylene insulation

If the wire has a braid of cotton yarn coated with varnish, then this is indicated by the letter L, and if the yarn is impregnated with an anti-rot compound, then the letter in the wire brand is omitted. The letter L is placed in last place in the designation of the wire brand.

Wires for electrical installations stamps

PVs have digital indices 1; 2; 3 and 4. These numbers indicate the degree of flexibility of the wires. The higher, the more flexible the wire.

Wires for overhead power lines are deciphered as follows:

SIP is a self-supporting insulated wire. Insulation made of light-stabilized cross-linked polyethylene.

SIP-1 - with uninsulated neutral

SIP-2 - with insulated neutral

SIP-4 - with insulated conductors of equal cross-section.

A - bare wire twisted from aluminum wires

AC - uninsulated wire consisting of a steel core and aluminum wires

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 fire safety indicators
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 permanent installations at rated alternating voltage 0.66 and 1 kV with frequency up to 100 Hz or at constant voltage 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 hydrogen chloride, released during the combustion of polymeric 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.

DESIGN

1. CURRENT CONDUCT- copper, single-wire, round shape, class 1 according to GOST 22483, 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

Cable VVG(a), also known as power wire VVG(a), also known as cable VVGng a, is a flame retardant wire that is used for the transmission and distribution of electricity, which occurs in stationary installations that have an electric current frequency of 50 Hz and a rated voltage of up to 660 or 1000 V. extremely widely - it can be used in any climatic conditions, at high altitudes, in water - virtually anywhere, unless, of course, it is damaged. This subtype is especially often used in places where there is an increased risk of a fire - for example, in enterprises working with flammable or explosive components.

Decoding of VVG(a) cable

The marking allows us to understand in more detail what this cable is. Here is its decoding: “VVG” means “vinyl-vinyl-naked,” which refers to the presence of two layers of polyvinyl chloride, as well as the absence of a specialized protective layer. Well, “ng”, if used in marking, means that the cable, in the event of a fire hazard, will not spread combustion. The letter “a”, very often placed in brackets, means the category of non-propagation of combustion according to. In particular, this means that even when laid in bundles, these cables do not propagate combustion, while traditional VVGs can “boast” of this only when laid individually. This letter should not be confused with the “a” that is placed before the abbreviation and means that the cable is not copper. In this case it is definitely copper. Often ls, frls, frlsltx, frhf are added to the marking, but in essence this is one cable.

Technical characteristics of VVGng (a)

U VVGng A a number of parameters can vary. For example, this may be the form factor of the cores (which can be round, triangular or flat), their number (from 1 to, as a rule, 5), their sections (from 1.5 mm 2 to 50 mm 2, and sometimes even more), nominal diameter (directly dependent on cross-sections), weight (from several tens of kilograms to several tons per kilometer). The permissible current can vary from 21A to several hundred, depending on both the type of cable and its location. As you can see, there are a great many variations of this product, so before you buy a cable, you need to study in detail the description of its specific brand; it is this description that will save you time and nerves in the future. The price, again, varies depending on the complexity and size of the cable. But in comparison with other types of VVG, the cost remains at approximately the same level. But any cost is very justified, because the cable will serve you under proper operation conditions for more than thirty years, five of which, as a rule, will be under warranty.