1000mm2 1 Core 3 Core Medium Voltage Underground Cable
MEDIUM VOLTAGE POWER CABLE CONSTRUCTION
1. CONDUCTOR
– Bare copper class 2 to IEC 60228, round, multiwire stranded and compact
2. CONDUCTOR SCREEN
– Inner semi-conducting coating
3. INSULATION
– Core insulation of cross-linked polyethylene (XLPE)
4. INSULATION SCREEN
– Outer conductive layer extruded and per-manently welded with the core insulation
Semi-conducting type
– Over the outer semi-conducting layer, a semiconducting tape must be used.
5. METAL SCREEN
– copper tapes helically with a minimum thickness of 0,1 mm.
Separator
– Over the screen as well as under outer sheath, a separating layer must be used (e. g. taping).
6. SHEATH
– Outer sheath of PVC compound
MEDIUM VOLTAGE POWER CABLE CHARACTERISTICS
Construction characteristics | |
Conductor shape | Circular stranded (RM) |
Lead free | Yes |
Insulation | XLPE |
Screen | copper tape |
Material of bedding | Separation tape |
Outer sheath | PVC |
Usage characteristics | |
Packaging | Steel Wooden Drum |
Minimum installation temperature | -20 °C |
Max. conductor temperature in service | 90 °C |
Short-circuit max. conductor temperature | 250 °C |
Bending factor when laying | 20 x D single core cable 15 x D multi-core cable |
Medium Voltage XLPE Insulated Power Cable Types | |||
MV Cable Types | Description | Cores | Nomi Section Area (mm2) |
Cu or Al/XLPE/PVC | copper or aluminum core, xlpe insulated, pvc sheathed, electrical cable | 1 core
3 core
| 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 500, 630, 800, 1000 |
Cu or Al/XLPE/STA/PVC | copper or aluminum core, xlpe insulated, steel tape armoured, pvc sheathed, electrical cable | ||
Cu or Al/XLPE/SWA/PVC | copper or aluminum core, xlpe insulated, steel wire armoured, pvc sheathed, electrical cable |
1 CORE 12/20KV POWER CABLE DATA
No. of cores and cross -sec. | Operation | Nominal | Insulation | Sheath | Outer Ø | weight | Current ratings in air 30℃ | Current ratings buried 20℃ | maximum DC resistance at 20℃ |
---|---|---|---|---|---|---|---|---|---|
mm² | kV | kV | mm | mm | mm | kg / km | A | A | Ω/km |
1 x 35 | 24 | 12/ 20 | 5.5 | 1.8 | 24.9 | 860 | 205 | 190 | 0.52 |
1 x 50 | 24 | 12/ 20 | 5.5 | 1.8 | 26.4 | 1138 | 245 | 225 | 0.39 |
1 x 70 | 24 | 12/ 20 | 5.5 | 1.9 | 28.1 | 1281 | 305 | 275 | 0.27 |
1 x 95 | 24 | 12/ 20 | 5.5 | 1.9 | 29.9 | 1570 | 370 | 330 | 0.19 |
1 x 120 | 24 | 12/ 20 | 5.5 | 2.0 | 31.3 | 1839 | 430 | 375 | 0.15 |
1 x 150 | 24 | 12/ 20 | 5.5 | 2.0 | 33.1 | 2174 | 490 | 425 | 0.12 |
1 x 185 | 24 | 12/ 20 | 5.5 | 2.1 | 34.7 | 2540 | 560 | 480 | 0.10 |
1 x 240 | 24 | 12/ 20 | 5.5 | 2.2 | 37.1 | 3120 | 665 | 555 | 0.08 |
1 x 300 | 24 | 12/ 20 | 5.5 | 2.2 | 39.5 | 3746 | 765 | 630 | 0.06 |
1 x 400 | 24 | 12/ 20 | 5.5 | 2.3 | 44.1 | 4863 | 890 | 725 | 0.05 |
1 x 500 | 24 | 12/ 20 | 5.5 | 2.4 | 47.6 | 5905 | 1030 | 825 | 0.04 |
1 x 630 | 24 | 12/ 20 | 5.5 | 2.5 | 51.3 | 7220 | 1190 | 940 | 0.03 |
3 CORE 12/20KV POWER CABLE DATA
No.cores x cross-sec. | Operation | Nominal | Insulation | Sheath | Outer Ø | weight | Current ratings in air 30℃ | Current ratings buried 20℃ | maximum DC resistance at 20℃ |
---|---|---|---|---|---|---|---|---|---|
mm² | kV | kV | mm | mm | mm | kg / km | A | A | Ω/km |
3 x 35 | 24 | 12/20 | 5.5 | 2.6 | 52.5 | 3023 | 155 | 185 | 0.52 |
3 x 50 | 24 | 12/20 | 5.5 | 2.7 | 55.5 | 3891 | 180 | 218 | 0.39 |
3 x 70 | 24 | 12/20 | 5.5 | 2.8 | 59.3 | 4396 | 223 | 267 | 0.27 |
3 x 95 | 24 | 12/20 | 5.5 | 3.0 | 63 | 5264 | 271 | 318 | 0.19 |
3 x 120 | 24 | 12/20 | 5.5 | 3.1 | 66.2 | 6190 | 312 | 363 | 0.15 |
3 x 150 | 24 | 12/20 | 5.5 | 3.2 | 69.8 | 7240 | 363 | 417 | 0.12 |
3 x 185 | 24 | 12/20 | 5.5 | 3.3 | 73.7 | 8499 | 404 | 460 | 0.1 |
3 x 240 | 24 | 12/20 | 5.5 | 3.5 | 78.6 | 10353 | 471 | 531 | 0.08 |
3 x 300 | 24 | 12/20 | 5.5 | 3.6 | 83.8 | 12328 | 536 | 596 | 0.06 |
3 x 400 | 24 | 12/20 | 5.5 | 3.8 | 93.6 | 15921 | 630 | 684 | 0.05 |