290/500KV Copper Conductor, XLPE insulation Corrugated Aluminum Metalic Sheath and HDPE Outer Sheath EHV Cable
Standard of EHV Power Cable
IEC60840:1999, IEC62067:2001and IEC62067:2006
Construction of EHV Power Cable
Copper (aluminum) conductor/ XLPE insulated/ corrugated aluminum sheath/ PVC (PE) sheathed
Rated Voltage of EHV Power Cable
|
U(kV) |
38 |
76 |
127 |
290 |
|
U0(kV) |
66 |
132 |
220 |
500 |
Cross Section of EHV Power Cable: mm2
|
240 |
300 |
400 |
500 |
630 |
800 |
800 |
1000 |
1200 |
1400 |
1600 |
|
Circular Compacted |
Segmental Miliken |
|||||||||
Operation Characteristics
- During the normal operation, the max permissible continuous operating temperature of conductor should not exceed 90°C
- Conductor temperature during short-circuit( 5 s maximum duration) should not exceed 250°C
- The min permissible bending radius during the cable laying is normally 25 times of the cable’s OD.
- The installation is not limited to the horizontal dropping varience.
- Pre-heated is needed when the ambient temperature is below 0°C during installation
Application of EHV Power Cable
EHV XLPE Power cable is suitable for transmission and distribution systems in the power station.
