6-35 kV
6-35 kV power cable with copper conductors and XLPE insulation
PvV is a medium-voltage power cable with a copper conductor, cross-linked polyethylene (XLPE) insulation, semi-conducting screens and a PVC compound sheath. It is used in 6, 10, 15, 20 and 35 kV distribution networks. It is installed as a group of three single-core cables (one per phase) in cable structures and indoor premises. Designation breakdown: Pv – XLPE insulation, V – PVC sheath.
Sizes of single-core cables rated 6/10 kV – the most common voltage in Uzbekistan's distribution networks. Actual technical specifications: outer diameter, weight, continuous current-carrying capacity in air.
| Type / size | Cores | Cross-section, mm² | Voltage | Copper screen, mm² | Outer Ø, mm | Weight, kg/km | Current (in air), A |
|---|---|---|---|---|---|---|---|
| PvV 1×16 | 1 | 16 | 6/10 kV | 16 | 18.3 | 457 | 128 |
| PvV 1×25 | 1 | 25 | 6/10 kV | 16 | 19.6 | 551 | 167 |
| PvV 1×35 | 1 | 35 | 6/10 kV | 16 | 20.6 | 646 | 203 |
| PvV 1×50 | 1 | 50 | 6/10 kV | 16 | 22.1 | 789 | 243 |
| PvV 1×70 | 1 | 70 | 6/10 kV | 16 | 23.6 | 969 | 303 |
| PvV 1×95 | 1 | 95 | 6/10 kV | 16 | 25.4 | 1194 | 369 |
| PvV 1×120 | 1 | 120 | 6/10 kV | 16 | 26.9 | 1417 | 426 |
| PvV 1×150 | 1 | 150 | 6/10 kV | 25 | 28.9 | 1751 | 481 |
| PvV 1×185 | 1 | 185 | 6/10 kV | 25 | 30.8 | 2074 | 550 |
| PvV 1×240 | 1 | 240 | 6/10 kV | 25 | 33.2 | 2543 | 647 |
| PvV 1×300 | 1 | 300 | 6/10 kV | 25 | 35.5 | 3049 | 739 |
| PvV 1×400 | 1 | 400 | 6/10 kV | 35 | 39 | 3958 | 837 |
| PvV 1×500 | 1 | 500 | 6/10 kV | 35 | 42.4 | 4821 | 942 |
| PvV 1×630 | 1 | 630 | 6/10 kV | 35 | 45.7 | 5887 | 1064 |
PvV is a modern power cable for overhead and underground medium-voltage lines of 6, 10, 15, 20 and 35 kV. Construction: stranded copper conductor, cross-linked polyethylene (XLPE) insulation, semi-conducting screens to equalise the electric field, a copper wire screen to carry away leakage currents, and a PVC compound outer sheath.
Advantages of XLPE for MV cables: long service life (30+ years even under high-voltage conditions), overload resistance, lower dielectric losses vs paper insulation. It is typically used in groups of 3 single-core cables (one per phase). For three-core versions, see PvVng or PvBV.
Conductor
Stranded copper, round, compacted. Cross-section 16-800 mm².
Extruded semi-conducting conductor screen
A layer of conductive cross-linked polymer compound that equalises the electric field.
Insulation
Cross-linked polyethylene (XLPE). Thickness depends on voltage: 3.4 mm for 6/10 kV; 4.5 mm for 15 kV; 5.5 mm for 20 kV; 8.0 mm for 35 kV.
Extruded semi-conducting insulation screen
Similar to the conductor screen, equalises the field.
Conductive tape
Over the semi-conducting screen.
Copper wire screen
Copper wires over the conductive tape, with a helically wound copper tape on top. Screen cross-section 16 mm² (for 16-185 mm² conductors) or 25-35 mm² (for larger cross-sections).
Inner sheath (bedding)
An extruded layer of polymer compound.
Outer sheath
PVC compound, black.
Cross-section of PvV – Cu conductor, semi-conducting screen, XLPE insulation, copper wire screen, PVC sheath
Full product range (all voltages 6-35 kV) – see the TCG datasheet
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