Power cables AVVG, AVVGng(A), AVVGng(A)-LS, AVVGng(A)-LSLTX, AVBbShv, AVBbShvng(A), AVBbShvng(A)-LS

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AVVG description

Power cable with insulation and sheath made of polyvinyl chloride plastic, AVVG brand, according to GOST 31996-2012.

Power cables with plastic insulation of the AVVG and ASVVG brands (non-armored), AVVGE and ASVVGE (with overall shielding), AVBSHv and ASVBSHv (with tape armor), AVKShv and ASVKShv (with steel wire armor) are designed for the transmission and distribution of electrical energy in stationary installations with a rated AC voltage of 0.66 and 1 kV and a nominal frequency of 50 Hz.
The cables can be used for single laying in dry and damp industrial premises, on special cable overpasses, in blocks, as well as for outdoor installation.
They can also be used for group laying in the ground (trenches), indoors, in tunnels, ducts, and mines, as well as outdoors, provided the cable is not subjected to significant tensile forces. However, in cases where there is a risk of mechanical damage during operation, they are designed to be flame-retardant when laid in groups, with reduced smoke and gas emissions and low toxicity of combustion products.
The main characteristics of the cables are given in Table 6.

Table 1. Conductors

Conductor type	Nominal cross-section, mm²
	Round	Sector (Segmental)
Single-wire conductors	2.5 – 95	–
Multi-wire conductors	16 – 1000	70 – 300

Cable design

The cables are manufactured with single-wire or multi-wire conductive aluminum or aluminum-alloy conductors, with a round or sector (segmental) shape, of class 1 or 2 according to GOST 22483 (Table 1).
Conductor shape:
— Round shape – used in single-core cables of all cross-sections and in multi-core cables with conductors of nominal cross-sections up to 300 mm².
— Sector shape – used in 3-core, 4-core, and 5-core cables with conductor cross-sections of 70 mm² or more.

Table 2. Nominal cross-section and number of cores

Number of cores	Nominal cross-section of main cores, mm²
	Nominal voltage, kV
	0,66	1
1, 2, 3, 4 и 5	2,5 – 50	2,5 – 240
1, 2, 3 и 4	2,5 – 50	2,5 – 400
1	2,5 – 50	2,5 – 1000

Table 3. Cable cross-section

Multicore cables have all cores of equal cross-section. Four- and five-core cables may have one core of a smaller cross-section (neutral (N) or grounding (PE)) in accordance with Table 3. The smaller cross-section conductive core can be round or sector-shaped, single-wire or multi-wire compacted, depending on the class of the main cores in the cable.
By agreement with the customer, cables with a different number of cores may be manufactured.

Core designation	Nominal cross-section, mm²
Main	4	6	10	16	25	35	50	70	95	120	150	185	240	300	400
Neutral or grounding	2.5	4	6	10	16	16	25	35	50	70	70	95	120	150	185

Table 4. Insulation color of multicore cables

The insulation of single-core cables can be of any color. The coloring should be solid or in the form of a longitudinal stripe at least 1 mm wide.
By agreement with the customer, other combinations of insulation colors for the main cores are allowed.

Number of cores in the cable, pcs	Core insulation color
	Core sequential number
	1	2	3	4	5
2	Gray*	Blue	–	–	–
3	Gray*	Brown	Black	–	–
3	Gray*	Blue	Green-yellow	–	–
4	Gray*	Brown	Black	Blue	–
4	Gray*	Brown	Black	Green-yellow**	–
5	Gray*	Brown	Black	Blue	Green-yellow
* Or natural. ** By agreement with the customer.

The conductor insulation can be made from the following materials:
— “B” – polyvinyl chloride (PVC) plastic compound, including low-flammability and low-fire-hazard types.
— “P” – polyethylene plastic compound.
— “Pv” – cross-linked polyethylene (XLPE) plastic compound.
The insulation of the neutral conductor (N) must be blue. The insulation of the grounding conductor (PE) must be two-colored – green and yellow. By agreement with the customer, the main insulated conductors may be marked with numbers starting from one.
The insulated conductors must be twisted into a common core. It is permissible to manufacture two-core and three-core cables in a flat version **”-P”**, with conductor cross-sections up to and including 16 mm².
A polyethylene terephthalate (PET) film tape must be applied over the twisted conductors of all cable types. The production of cables without a tape over the twisted conductors is allowed, provided that the mobility of the conductors is maintained and the sheath can be easily separated from the insulation when stripping the cables.
The bedding insulation (cushion layer) must be extruded from the insulation material or made of polyvinyl chloride (PVC) plastic compound. It can also be applied as a wrapping or longitudinal tape made of polyethylene terephthalate (PET) film, non-woven fabric, PVC plastic compound, or another equivalent material. In low-flammability or low-fire-hazard cables, the bedding insulation (inner extruded sheath) must be made of low-fire-hazard PVC plastic compound, which must fill all gaps between the conductors.
Shielding and protective armor
— “E” – shield in the form of a copper wire wrapping.
— “B” – armor made of two steel tapes.
— “K” – armor made of galvanized steel wires.
A protective outer sheath (hose) is applied over the armor: “Shv” or “Shp”, depending on the cable sheath material.

Table 5. The sheath of power cables is made of materials specified in the table

If not specified in the order, cables are manufactured with a black sheath.
Cable manufacturing by agreement with the customer:
- with length marking on the cable sheath;
- with a different number and nominal cross-section of cores;
- with a colored outer sheath (red, white, blue, or other colors).

Sheath material designation	Fire hazard indicator	Description of sheath material, cable type according to fire hazard indicator (as per GOST 31565-2012)
VG	(no index)	Sheath made of PVC compounds, does not propagate combustion in single installation
V	ng(A)	Sheath made of low-combustibility PVC compound, does not propagate combustion in group installation of category A
	ng(A)-LS	Sheath made of low-fire-hazard PVC compound, does not propagate combustion in group installation of category A, with reduced smoke and gas emission
	ng(A)-LSLTx	Sheath made of low-fire-hazard PVC compound, does not propagate combustion in group installation of category A, with reduced smoke and gas emission, and low toxicity of combustion products

Table 6. Technical specifications

Name	Specifications
Nominal voltage	AC voltage at a nominal frequency of 50 Hz: 0.66 kV; 1 kV
Electrical insulation resistance during operation, recalculated per 1 km at t=+20 °C, not less than	– 150 MΩ for polyethylene insulation; – 12 MΩ for PVC insulation with a cross-section of 1.5 mm²; – 10 MΩ for PVC insulation with a cross-section from 2.5÷4.0 mm²; – 9 MΩ for PVC insulation with a cross-section from 6.0÷10.0 mm²; – 7 MΩ for PVC insulation with a cross-section of 10 mm² and above.
Electrical resistance of conductive cores at t=+20 °C, not less than	Complies with GOST 22483-2021
Cable testing with AC voltage at 50 Hz (5 min)	3000 V for cables with a nominal voltage of 0.66 kV; 3500 V for cables with a nominal voltage of 1.0 kV
Ambient temperature, upper limit	+50 °C
Ambient temperature, lower limit	-50 °C
Installation temperature, not lower than	-15 °C
Maximum operating temperature of the core	+70 °C
Minimum permissible bending radii for installation and operation:	– for single-core cables – 10 calculated outer diameters of the cable; – for multi-core cables – 7.5 calculated outer diameters of the cable
Service life of cables, not less than	30 years
Warranty period of operation, not less than	5 years from the date of cable commissioning

Table 7. The permissible current loads for cables with copper conductors must comply with the values specified in the table.

Nominal core cross-section, mm²	Permissible current loads for cables with PE and PVC insulation, A*
	Single-core**		Two-core		Three-core***
	In air	In ground	In air	In ground	In air	In ground
2,5	30	32	25	33	21	28
4	40	41	34	43	29	37
6	51	52	43	54	37	44
10	69	68	58	72	50	59
16	93	83	77	94	67	77
25	122	113	103	120	88	100
35	151	136	127	145	109	121
50	189	166	159	176	136	147
70	233	200	–	–	167	178
95	284	237	–	–	204	212
120	330	269	–	–	236	241
150	380	305	–	–	273	274
185	436	343	–	–	313	308
240	515	396	–	–	369	355
* To determine the current loads of cables with cross-linked PE insulation when installed in air and in the ground, these loads should be multiplied by factors of 1.16 and 1.13, respectively. To determine the current loads of cables laid in water, the loads for ground installation should be multiplied by a factor of 1.3. Current loads are given for operation on direct current. * Also applicable to four-core cables with a reduced cross-section neutral core. To determine the current loads of four-core cables with equal cross-section cores in four-wire networks, when all cores are under load in normal operation, these loads should be multiplied by a factor of 0.93.

Table 8. Permissible current loads for cables with aluminum alloy cores insulated with polyvinyl chloride plastic and halogen-free polymer compositions must comply with the values specified in the table.

Nominal core cross-section, mm²	Permissible current loads for cables, A
	Single-core				Multicore**
	Direct current		Alternating current*		Alternating current
	In air	In ground	In air	In ground	In air	In ground
2,5	30	32	22	30	21	28
4	40	41	30	39	29	37
6	51	52	37	48	37	44
10	69	68	50	63	50	59
16	93	83	68	82	67	77
25	117	159	92	106	87	102
35	143	192	113	127	106	123
50	176	229	139	150	126	143
70	223	282	176	184	161	178
95	275	339	217	221	197	214
120	320	388	253	252	229	244
150	366	434	290	283	261	274
185	425	494	336	321	302	312
240	508	576	401	374	359	363
300	589	654	464	423	424	417
400	693	573	544	485	501	482
500	819	870	636	556	–	–
625 и 630	971	1007	744	633	–	–
800	1146	1162	858	713	–	–
1000	1334	1327	972	793	–	–
* Laid in a tight triangular configuration. ** To determine the current loads of four-core cables with equal cross-section cores in four-wire networks, when all cores are under load in normal operation, as well as for five-core cables, these values should be multiplied by a factor of 0.93.

Table 9. Permissible current loads for cables with aluminum alloy cores insulated with cross-linked polyethylene must comply with the values specified in the table.

Nominal core cross-section, mm²	Permissible current loads for cables, A
	Single-core				Multicore**
	Direct current		Alternating current*		Alternating current
	In air	In ground	In air	In ground	In air	In ground
2,5	35	36	26	34	24	32
4	46	46	35	44	34	42
6	59	59	43	54	43	50
10	80	77	58	71	58	67
16	108	94	79	93	78	87
25	144	176	112	114	108	112
35	176	211	138	136	134	135
50	217	251	171	161	158	157
70	276	309	216	198	203	195
95	340	371	267	237	248	233
120	399	423	313	271	290	267
150	457	474	360	304	330	299
185	531	539	419	346	382	341
240	636	629	501	403	453	397
300	738	713	580	455	538	455
400	871	822	682	523	636	527
500	1030	949	800	599	–	–
625 и 630	1221	1098	936	685	–	–
800	1437	1262	1081	773	–	–
1000	1676	1443	1227	862	–	–
* Laid in a tight triangular configuration. ** To determine the current loads of four-core cables with equal cross-section cores in four-wire networks, when all cores are under load in normal operation, as well as for five-core cables, these values should be multiplied by a factor of 0.93.

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Power cables AVVG, AVVGng(A), AVVGng(A)-LS, AVVGng(A)-LSLTX, AVBbShv, AVBbShvng(A), AVBbShvng(A)-LS