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Copper power cables with PVC insulation 0.66kV

Copper power cables with PVC insulation

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

 

Application
VVG, VVGz (, ) 0.66 kV

Cables are designated for power supply and distribution in fixed installations with rated AC voltage 0.66 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 in accordance with GOST 22483-77).

Insulation
Polyvinylchloride (PVC) compound.

Oversheath
Polyvinylchloride (PVC) compound.

Technical characteristics

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

Electric resistance of conductors to DC complies with GOST 22483.

Insulation resistance calculated for 1 km at temperature 20 C:

Nominal conductor cross-section, mm Insulation resistance, MOhm, no less
1 — 1.5 12
2.5 — 4 10
6 9
10 — 50 7

Insulation resistance calculated for 1 km at temperature 20 C indicated at protractedly permissible temperature for the conductors heating at operational period at least 0.005 MOhm.

Cables endure AC 3.0 kV test and 50 Hz frequency during 10 minutes.

Cables are flame retardant with a single laying.

Manufactured cable length:

  • 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 25-50 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.

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:

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

* 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.

Technical Data (reference values)
Nominal conductor cross-section, mm Nominal overall diameter, mm Weight of 1 km cable, kg
VVG VVGz VVG VVGz
1×1.5 5 39
1×2.5 5.4 50
1×4.0 6 70
1×6.0 6.5 92
1×10 7.7 139
1×16 9.8 223
1×25 11.5 329
1×35 12.7 429
1×50 14.4 568
2×1.5 7.6 7.6 73 88
2×2.5 8.4 8.4 97 117
2×4.0 10.3 10.3 151 181
2×6.0 11.3 11.3 198 236
2×10 13.7 13.7 299 363
2×16 16.7 16.7 449 554
2×25 20.5 20.5 686 849
2×35 22.8 22.8 896 1105
2×50 26.7 26.7 1211 1500
3×1.5 8 8 94 106
3×2.5 9.4 9.4 140 156
3×4.0 10.9 10.9 199 222
3×6.0 12 12 267 296
3×10 14.5 14.5 412 461
3×16 17.8 17.8 627 707
3×25 21.8 21.8 965 1089
3×35 24.6 24.6 1294 1454
3×50 28.4 28.4 1722 1943
4×1.5 9.2 9.2 128 140
4×2.5 10.2 10.2 174 189
4×4.0 11.8 11.8 251 272
4×6.0 13 13 339 367
4×10 15.9 15.9 529 575
4×16 19.9 19.9 828 904
4×25 24.4 24.4 1273 1390
4×35 27.2 27.2 1681 1832
4×50 31.3 31.3 2244 2453
3×1.5+1×1.0 9.2 9.2 123 137
3×1.5+1×1.5 9.2 9.2 128 141
3×2.5+1×1.5 10.2 10.2 164 184
3×4.0+1×2.5 11.8 11.8 234 265
3×6.0+1×4.0 13 13 319 356
3×10+1×6.0 15.4 15.4 483 534
3×16+1×10 19.3 19.3 759 845
3×25+1×10 22.5 22.5 1077 1199
3×25+1×16 24.4 24.4 1175 1345
3×35+1×10 25.4 25.4 1408 1574
3×35+1×16 26.2 26.2 1479 1662
3×35+1×25 27.2 27.2 1585 1788
3×50+1×16 29.3 29.3 1901 2123
3×50+1×25 30.2 30.2 2007 2252
3×50+1×35 31.3 31.3 2113 2404

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71101, Ukraine, Zaporozhye region,
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