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Copper power cables with PVC insulation 1 kV; 6 kV

Copper power cables with PVC insulation

GOST 16442-80
IEC 60502-1 (1998-11)
IEC 60502-2 (1998-03)

 

Application

VVG, VVGz (, ) 1 kV; 6 kV

Cables are designated for power supply and distribution in fixed installations with rated AC voltage 1 kV and 6 kV at frequency 50 Hz at ambient temperature from -50 C to +50 C and relative humidity up to 98% at temperature up to 35 C, cables are intended for laying in outdoors including.

VVGz cables are designated for fixed connection to electric devices at nominal AC voltage up to 0.66 kV at frequency 50 Hz. Cables are used for connection to devices requiring input sealing.

 

Construction

Conductors
Copper round single-wire or multicore conductors (class 1, 2 in accordance with GOST 22483-77). Copper multicore sector-shaped conductors.

Insulation and oversheath
Insulation and oversheath are made from polyvinylchloride (PVC) compound.

Core wrapping
Polyvinylchloride (PVC) compound.

Screen for 6 kV cables
Electroconductive screen from electroconducting polyvinylchloride (PVC) compound and screen from 2 copper tapes. These tapes are gapped laid.

Technical characteristics

Cable Number of conductors Nominal conductor cross-section, mm
VVG 1 kV
VVGz 1 kV
VVG 6 kV
1, 2, 3, 4
2, 3, 4
3
1.5 — 240
1.5 — 50
35 — 240

Electric resistance of conductors to DC complies with GOST 22483.

Insulation resistance calculated for 1 km at temperature 20 C:

-for cables at rated voltage 1 kV:

Nominal conductor cross-section, mm Insulation resistance, MOhm, no less
1 — 1.5 12
2.5 — 4 10
6 9
10 — 240 7

- for cables at rated voltage 6 kV – 50 MOhm.

Insulation resistance calculated for 1 km at 20 C indicated at protractedly permissible temperature for the conductors heating at operational period is at least:

  • at rated voltage 1 kV - 0.005 MOhm;
  • at rated voltage 6 kV - 0.05 MOhm.

Cables endure AC voltage test and 50 Hz frequency during 10 minutes:

  • 3.5 kV – for cables at rated voltage 1 kV;
  • 15 kV – for cables at rated voltage 6 kV.

Cables are flame retardant with a single laying.

Manufactured cable length for cables at rated voltage of 1 kV :

  • manufactured cable length must be min. 450 m for cables with main conductor cross-section 1.5-16 mm;
  • manufactured cable length must be min. 300 m for cables with main conductor cross-section 25-70 mm;
  • manufactured cable length must be min. 200 m for cables with main conductor cross-section 95-240 mm.

Manufactured cable length for cables at rated voltage of 6 kV :

  • manufactured cable length must be min. 450 m for cables with main conductor cross-section 35-70 mm;
  • manufactured cable length must be min. 400 m for cables with main conductor cross-section 92-120 mm;
  • manufactured cable length must be min. 350 m for cables with main conductor cross-section 150-240 mm.

Minimal temperature of cable laying without pre-heating: - 15 C.

Minimum permissible bending radius of the cable at installation and routing must equal to min. 10 outer diameters of the cable for single-core cable, and min.7.5 outer diameters of the cable – for multicore cables.

Protractedly permissible temperature for the conductors heating: 70 C.

Maximum permissible temperature for the conductors heating in short circuit mode: 160 C.

Duration of short circuit mode: max. 4 seconds.

Maximum permissible temperature for the conductors heating in emergency mode: 80 C

Operation time of cables in emergency mode do not should be more than 8 hours in 24 hours, or no more than 1000 hours during all service life.

Guarantee period: 5 years from the commissioning date.

The manufacturer can ensure compliance of cable quality with requirements of current technical specification, provided all terms of transportation, storage, installation and use have been observed.

Service life: 30 years.

All products are certified.


Permissible current loads at rated voltage of 1 kV

Nominal conductor cross-section, mm Permissible current loads, A Permissible short-circuit currents, kA
Single-core cables Double-core cables Three-core cables *
above ground under ground above ground under ground above ground under ground
1.5 29 32 24 33 21 28 0.17
2.5 40 42 33 44 28 37 0.27
4 53 54 44 56 37 48 0.43
6 67 67 56 71 49 58 0.65
10 91 89 76 94 66 77 1.09
16 121 116 101 123 87 100 1.74
25 160 148 134 157 115 130 2.78
35 197 178 166 190 141 158 3.86
50 247 217 208 230 177 192 5.23
70 318 265 226 237 7.54
95 386 314 274 280 10.48
120 450 358 321 321 13.21
150 521 406 370 363 16.30
185 594 455 421 406 20.39
240 704 525 499 468 26.80

* The same and for four-core cables with neutral conductor lower cross-section. For determining of current loads (four-core cables) which are equal to cross-section of four-wire networks in all loads in normal mode this loads must be multiplied by 0.93 coefficient.

Permissible current loads at rated voltage of 6 kV

Nominal conductor cross-section, mm Permissible current loads, A Permissible short-circuit currents, kA
above ground under ground
35 135 147 3.86
50 165 175 5.23
70 210 215 7.54
95 255 260 10.48
120 300 295 13.21
150 335 335 16.30
185 285 380 20.39
240 460 445 26.80
Technical Data (reference values)

Nominal conductor cross-section, mm Nominal overall diameter, mm Weight of 1 km cable, kg
VVG VVGz VVG VVGz
Nominal voltage 1 kV with round conductor
1×1.5 5.4 43
1×2.5 5.8 55
1×4.0 6.6 78
1×6.0 7.1 100
1×10 7.9 143
1×16 10.0 227
1×25 11.7 334
1×35 12.9 435
1×50 14.6 575
1×70 16.4 782
1×95 18.9 1069
1×120 20.3 1295
1×150 22.2 1596
1×185 24.6 1981
1×240 27.7 2576
2×1.5 8.4 8.4 82 102
2×2.5 9.8 9.8 120 146
2×4.0 11.5 11.5 169 210
2×6.0 12.5 12.5 217 268
2×10 14.1 14.1 307 376
2×16 17.1 17.1 458 569
2×25 20.9 20.9 697 868
2×35 23.2 23.2 909 1126
2×50 27.1 27.1 1225 1525
2×70 30.6 1658
2×95 35.2 2256
2×120 38.1 2729
2×150 41.9 3359
2×185 46.3 4156
2×240 52.4 5397
3×1.5 9.4 9.4 118 134
3×2.5 10.3 10.3 155 174
3×4.0 12.1 12.1 224 255
3×6.0 13.2 13.2 293 332
3×10 14.9 14.9 422 475
3×16 18.6 18.6 657 742
3×25 22.2 22.2 981 1111
3×35 25.1 25.1 1312 1478
3×50 28.8 28.8 1742 1971
4×1.5 10.2 10.2 145 159
4×2.5 11.1 11.1 192 211
4×4.0 13.2 13.2 281 310
4×6.0 14.5 14.5 372 408
4×10 16.4 16.4 541 591
4×16 20.4 20.4 846 926
4×25 24.9 24.9 1294 1417
4×35 27.6 27.6 1704 1861
4×50 31.8 31.8 2271 2487
5×1.5 11.1 172
5×2.5 12.1 230
5×4.0 14.5 339
5×6.0 15.8 451
5×10 18.0 662
5×16 22.5 1036
5×25 27.4 1589
3×1.5+1×1.0 10.2 10.2 139 156
3×1.5+1×1.5 10.2 10.2 145 159
3×2.5+1×1.5 11.1 11.1 182 203
3×4.0+1×2.5 12.8 12.8 259 287
3×6.0+1×4.0 14.5 14.5 351 393
3×10+1×6.0 16.4 16.4 502 562
3×16+1×10 19.7 19.7 775 851
3×25+1×10 22.9 22.9 1096 1199
3×25+1×16 24.9 24.9 1196 1350
3×35+1×10 25.9 25.9 1429 1571
3×35+1×16 26.6 26.6 1501 1661
3×35+1×25 27.6 27.6 1608 1790
3×50+1×16 29.7 29.7 1925 2113
3×50+1×25 30.6 30.6 2032 2244
3×50+1×35 31.8 31.8 2138 2398
Nominal voltage 1 kV with sector-shaped conductor
3×70 29.0 2397
3×95 32.7 3170
3×120 36.3 3946
3×150 38.9 4848
3×185 42.6 5909
3×240 48.2 7622
4×70 36.0 3206
4×95 37.8 4211
4×120 41.6 5200
4×150 45.4 6443
4×185 49.4 7853
4×240 55.6 10123
3×70+1×25 33.5 2703
3×70+1×35 33.5 2797
3×70+1×50 34.4 2962
3×95+1×35 37.8 3607
3×95+1×50 37.8 3736
3×120+1×35 40.0 4342
3×120+1×70 41.7 4683
3×150+1×50 43.6 5383
3×150+1×70 43.6 5579
3×185+1×50 48.4 6496
3×185+1×90 48.9 6976
3×240+1×70 54.4 8373
3×240+1×120 54.4 8890
Nominal voltage 6 kV with round conductors
3×35 40.7 2773
3×50 43.6 3323
Nominal voltage 6 kV with sector-shaped conductors
3×70 43.2 3602
3×95 46.8 4502
3×120 50.0 5345
3×150 52.1 6295
3×185 55.7 7479
3×240 59.9 9202

©
2003–2022 CJSC Production Association Berdyansk Cable Plant
71101, Ukraine, Zaporozhye region,
Berdyansk, Promyshlennaya St., 2b
Phone: +380-6153-20000 (reception)
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Phantom, 2012