Beijing Silk Road Enterprise Management Services Co.,LTD
Beijing Silk Road Enterprise Management Services Co.,LTD
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21KV 35KV Fire Resistant 120mm2 Medium Voltage Wire For Construction
MEDIUM VOLTAGE CABLE VOLTAGE
3.6/6KV, 6/10KV, 8.7/15KV, 12/20KV, 18/20KV, 21/35KV, 26/35KV
MEDIUM VOLTAGE CABLE CONSTRUCTION
1. Conductor: Copper or aluminium (class1 or class 2)
2. Inner semi-conducting layer
3. Insulation: Cross inked polyethylene (XLPE)
4. Outer semi-conducting layer
5. Armoured or Unarmoured
6. Wrapping of conductive material
7. Screen: Braiding of copper wires or copper tape
8. Separator
9. Outer jacket: PVC or PE
MEDIUM VOLTAGE CABLE APPLICATION
The cable is used for fixed installations such as electric power distribution networks or industrial installations, which is laid indoors, outdoors, in tunnel, in cable trench, or direct in ground, able to bear external mechanical force, but unable to bear large pulling force.
MEDIUM VOLTAGE CABLE CHARACTERISTICS
1. Max Long-time operating temperature of XLPE insulated cable is 90°C
2. Installing temperature of cable should not be less than 0°C
3. Max short-circuit temperature is not exceed 250°C,Not more than5 Sec.
4. Unable be laid without the limit of fall with enough mechanical pull,Single core cable can not be laid in iron tube or fixed by circled iron tools around cables
MEDIUM VOLTAGE CABLE TYPE & APPLICATION
| TYPE | NAME | Main Application | |
| CU core | AL core |
|
|
| YJV/YJY | YJLV/YJLY | XLPE insulated,PVC/PE sheathed power cable | For laying indoor ,tunnel,canal and underground.Unable to bear external mechanical forces,but bear the traction force during laid |
| YJV22/YJV23 | YJLV22/YJLV23 | XLPE insulated,steel tape armored,PVC/PE sheathed power cable | For laying indoor ,tunnel,canal and underground.Able to bear external mechanical forces,but unable to bear large pulling force |
| YJV32/YJV33 | YJLV32/YJLV33 | XLPE insulated,thin steel wire armored,PVC/PE sheathed power cable | For laying in shaft,water underground will large difference of level.Able to bear external mechanical forces and moderate pulling force |
| YJV42/YJV43 | YJLV42/YJLV43 | XLPE insulated,thick steel wire armored,PVC/PE sheathed power cable | For laying in water and seabed.Able to bear positive pressure and pulling force |
21/35KV XLPE INSULATE PVC SHEATH COPPER CORE MV CABLE DATA
| No. of cores and nominal crosssection | 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 50 | 40.5 | 21/ 35 | 9.3 | 2.1 | 34.8 | 1533 | 245 | 225 | 0.39 |
| 1 x 70 | 40.5 | 21/ 35 | 9.3 | 2.1 | 36.4 | 1791 | 305 | 275 | 0.27 |
| 1 x 95 | 40.5 | 21/ 35 | 9.3 | 2.2 | 38.3 | 2115 | 370 | 330 | 0.19 |
| 1 x 120 | 40.5 | 21/ 35 | 9.3 | 2.2 | 39.7 | 2408 | 430 | 375 | 0.15 |
| 1 x 150 | 40.5 | 21/ 35 | 9.3 | 2.3 | 41.4 | 2769 | 490 | 425 | 0.12 |
| 1 x 185 | 40.5 | 21/ 35 | 9.3 | 2.3 | 43.1 | 3167 | 560 | 480 | 0.1 |
| 1 x 240 | 40.5 | 21/ 35 | 9.3 | 2.4 | 45.5 | 3790 | 665 | 555 | 0.08 |
| 1 x 300 | 40.5 | 21/ 35 | 9.3 | 2.5 | 48.1 | 4481 | 765 | 630 | 0.06 |
| 1 x 400 | 40.5 | 21/ 35 | 9.3 | 2.6 | 51.4 | 5561 | 890 | 725 | 0.05 |
| 1 x 500 | 40.5 | 21/ 35 | 9.3 | 2.7 | 57.1 | 6894 | 1000 | 825 | 0.04 |
| 1 x 630 | 40.5 | 21/ 35 | 9.3 | 2.8 | 60.8 | 8263 | 1160 | 940 | 0.03 |