Cables are designated for power supply and distribution in fixed installations with rated AC voltage 0.66 kV, 1 kV and 6 kV at frequency 50 Hz.
Cables are designated for workings requiring fire safe bundled laying, high fire security, low level of smoke and toxic emission from burning (in tube and power stations, channels, skyscrapers, industrial and public buildings).
Cables are intended for laying where required special fire-prevention measures for the protection of people and material values.
Cables can be used in DC networks. Nominal DC voltage is 2.4 times more than nominal AC voltage.
Cables are designated at ambient temperature from -30 C up to +50 C and relative humidity up to (98±2)% at temperature at temperature to 35 C.
Construction
Conductors
Copper or aluminum round single-wire or multicore conductors;
Multicore copper or aluminum sector-shaped conductors (class 1, 2 in accordance with GOST 22483-77).
Insulation, core wrapping and oversheath
Insulation, core wrapping and oversheath are made from polyvinylchloride (PVC) compound for cables with «ng» designation.
Screen for 6 kV cables
Electroconductive screen from electroconducting polyvinylchloride (PVC) compound and screen from 2 copper tapes. These tapes are gapped laid.
Covering «BbSHv»:
- armour is made from steel tapes;
- polyvinylchloride (PVC) compound for cables with «ng» designation is applied over wrapping.
Technical characteristics
Cable
Number of conductors
Nominal conductor cross-section, mm
0.66 kV
1 kV
VVGngLSHF
1, 2, 3, 4
1.5 – 50
1.5 – 240
VVGzngLSHF
2, 3, 4
1.5 – 50
1.5 – 50
AVVGngLSHF
1, 2, 3, 4
2.5 – 50
2.5 – 240
AVVGzngLSHF
2, 3, 4
2.5 – 50
2.5 – 50
VBbSHvngLSHF, AVBbSHvngLSHF
2, 3, 4
4.0 – 50
6.0 – 240
Electric resistance of conductors to DC complies with GOST 22483-77.
Insulation resistance calculated for 1 km at temperature 20 C:
Nominal conductor cross-section, mm
Rated voltage, kV
Insulation resistance, MOm, no less
1.0; 1.5
0.66 and 1
12
2.5 – 4.0
0.66 and 1
10
6.0
0.66 and 1
9
10 – 240
0.66 and 1
7
Insulation resistance calculated for 1 km at 20 C indicated at protractedly permissible temperature for the conductors heating at operational period is at least 0.005 MOhm
Cables endure AC voltage test and 50 Hz frequency during 10 minutes:
3.0 kV – for cables at rated voltage 0.66 kV;
3.5 kV – for cables at rated voltage 1 kV;
Protractedly permissible temperature for the conductors heating: 70 C.
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.
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.
Cables have flame-retarding ability when laid in bundles in accordance with DSTU 4237 – 3 – 22 (category A).
Cables with «ngLS» and «ngLSHF» designation have low level of smoke, halogen-free PVC oversheath.
Manufactured cable length for cables at rated voltage of 0.66 kV and 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.
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 and permissible short-circuit currents for cables with aluminum and copper conductors at rated voltage 0.66 kV and 1 kV:
Nominal conductor cross-section, mm
Permissible current loads, A
Permissible short-circuit currents, kA
aluminum conductor
copper conductor
above ground
under ground
above ground
under ground
copper conductor
aluminum conductor
35
105
110
135
147
3.86
2.50
50
125
130
165
175
5.23
3.38
70
155
160
210
215
7.54
4.95
95
190
195
255
260
10.48
6.86
120
220
220
300
295
13.21
8.66
150
250
250
335
335
16.30
10.64
185
290
285
285
380
20.39
13.37
240
345
335
460
445
26.80
17.54
Permissible current loads and permissible short-circuit currents for cables copper conductors at rated voltage 0.66 kV and 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 and permissible short-circuit currents for cables with aluminum conductors at rated voltage 0.66 kV and 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
2.5
30
32
25
33
21
28
0.18
4
40
41
34
43
29
37
0.29
6
51
52
43
54
37
44
0.42
10
69
68
58
72
50
59
0.70
16
93
83
77
94
67
77
1.13
25
122
113
103
120
88
100
1.81
35
151
136
127
145
109
121
2.50
50
189
166
159
176
136
147
3.38
70
233
200
—
—
167
178
4.95
95
284
237
—
—
204
212
6.86
120
330
269
—
—
236
241
8.66
150
380
305
—
—
273
274
10.64
185
436
343
—
—
313
308
13.37
240
515
396
—
—
369
355
17.54
* 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.
