26/35kV Unarmored High Voltage Copper Power Cable
International Standard IEC 60502 from the International Electrotechnical Commission sets out the specification for power cables with extruded insulation with a voltage rating of 1kV to 35kV. The cable are mainly used for power distribution in power stations, industrial installation and switchgears, as well as in local mains.
26/35kV Unarmored Copper Power Cables
1.Application
The cable is used in electric transmission and disirbution system operating at rated voltage of 0.6/1, 1.8/3, 3.6/6, 6/6, 6/10, 8.7/10. 8.7/15, 12/20, 18/30, 21/35, 26/35kV. The power cable are mainly used for power distribution in power stations, industrial installation and shafts, water and soil, able to bear the larger positive pressure, as well as in local mains. Able to bear certain traction during installation. For fixed installation underground, in interior premises, cable ducts, in the open air and in water if no risk of any mechanical damage is to be expected.
2. Structure
① Conductor: Compact stranded copper conductor, Cl.2 as per IEC 60228
② Conductor Screen: Semi-conductor
③ Insulation: XLPE (cross-linked polyethylene) rated at 90OC
④ Insulation Screen: Semi-conductor
⑤ Screen: Copper tape
⑥ Inner covering : PVC
⑦ Armoring: Stainless steel tape Armour/Steel Wire Armour
⑧ Sheath: PVC or FR-PVC type ST2 to IEC 60502, black
Standard:
International: IEC 60502, IEC 60228China: GB/T 12706
Other standards such as BS, DIN and ICEA upon request
Some cables meeting the requirements of IEC 60502 benefit from armoured layers, making them able to withstand a higher degree of mechanical stress than comparative sized unarmoured cables. Various types of armour are specified, such as concentric copper wire screens and/or helically wound copper tape as required in the N2XCH cable.
INTERNATIONAL POWER CABLES
Shanghai Pudong Wire and Cable Group is a leading supplier of power cables to British, European and international standards, including IEC 60502. For technical support with your IEC standard cable requirements, contact our technical engineers who have vast experience with their designs, manufacture and testing.
3. Core and Cross Section Area:
| Nom. Cross-section of conductor | Insulation Thickness | Sheath Thickness | Approx. O.D. | Approx Weight | Max. D.C. Resistance of Conductor (20°C) | Test Voltage A.C | Current Rating | |
| mm2 | mm | mm | mm | kg/km | Ω/km | kV/5min | In air(A) | In soil(A) |
| 1×50 | 10.5 | 2.3 | 34 | 2441 | 0.387 | 91 | 220 | 215 |
| 1×70 | 10.5 | 2.4 | 36 | 2788 | 0.268 | 91 | 270 | 265 |
| 1×95 | 10.5 | 2.4 | 37 | 3083 | 0.193 | 91 | 330 | 315 |
| 1×120 | 10.5 | 2.5 | 38 | 3407 | 0.153 | 91 | 375 | 360 |
| 1×150 | 10.5 | 2.5 | 40 | 3750 | 0.124 | 91 | 425 | 400 |
| 1×185 | 10.5 | 2.6 | 41 | 4163 | 0.0991 | 91 | 485 | 455 |
| 1×240 | 10.5 | 2.7 | 44 | 4790 | 0.0754 | 91 | 560 | 525 |
| 1×300 | 10.5 | 2.8 | 46 | 5498 | 0.0601 | 91 | 650 | 595 |
| 1×400 | 10.5 | 2.9 | 49 | 6568 | 0.047 | 91 | 760 | 680 |
| 1×500 | 10.5 | 3 | 52 | 7648 | 0.0366 | 91 | 875 | 775 |
| 3×50 | 10.5 | 3.7 | 87 | 9975 | 0.387 | 91 | 185 | 200 |
| 3×70 | 10.5 | 3.9 | 90 | 10927 | 0.268 | 91 | 230 | 250 |
| 3×95 | 10.5 | 4 | 95 | 12190 | 0.193 | 91 | 280 | 300 |
| 3×120 | 10.5 | 4.1 | 99 | 13451 | 0.153 | 91 | 310 | 330 |
| 3×150 | 10.5 | 4.2 | 100 | 14907 | 0.124 | 91 | 360 | 380 |
| 3×185 | 10.5 | 4.3 | 106 | 16501 | 0.0991 | 91 | 400 | 425 |
| 3×240 | 10.5 | 4.5 | 112 | 18826 | 0.0754 | 91 | 470 | 490 |
| 3×300 | 10.5 | 4.6 | 115 | 19114 | 0.0601 | 91 | 545 | 555 |
| 3×400 | 10.5 | 4.9 | 123 | 22818 | 0.047 | 91 | 635 | 625 |
