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|
| Clarification for Site Condition For Submarine Power Cable |
|
| /TD> |
| QUESTIONS |
ANSWER |
NOTE |
| Q1. Submarine Cable Length? |
3300m |
equivalent |
| Q2. Land Cable Length? |
200m |
equivalent |
| Q3. Land Cable Length? |
500m |
equivalent |
| Q4. Type of Sealing End? |
depand your recommend |
|
| Q5. Type of Sealing End? |
depand your recommend |
|
| Q6. Ambient Temperature? |
(25-37) degree |
|
| Q7. Ambient Temperature? |
(25-37) degree |
|
| Q8. Water Temperature? |
(25-27) degree |
|
| Q9. Sea Depth? |
25m |
|
| Q10. Current Speed? |
N/A |
|
| Q11. Burial Depth of submarine cable to protect against anchor of vessels? |
2m or your recommend |
|
| Q12. Thermal Resistivity and Temerature of seabed? |
N/A and 20-23 degree |
|
| Q13. Existing cable or pipeline on seabed? |
not |
|
| Q14. Type of seabed? (Soil, sand, rock, coral or other?) |
Soil,sand, together |
|
| Q15. Type of Land? (Soil, sand,rock, or other?) |
Soil,sand,rock together |
|
| Q16. Thermal Resistivity and Temperature of Land? |
N/A and 25-30 degree |
|
| Q17. Type of Land? (Soil, sand, rock, or other?) |
Soil,sand,rock together |
|
| Q18. ThermalResistivity and Temperature of Land? |
N/A and 25-30 degree |
|
| Q19. Required Protection against cyclone? |
no |
|
| Q20. Trawl fishery is common or not? |
no |
|
| Q21. Frequency of ocean vessels across cable route? |
high |
|
| Q22. Required environmental protection or conditions? |
no |
|
| Q23. Required Transmission Capacity? (MVA |
8 MW |
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|
| 1.1 Mechanical data |
Quantity |
Unit |
| 1.1.1 Bending |
|
|
| - Minimum bending radius static |
1.4 |
m |
| - Minimum bending radius under tension (MBR) |
2.1 |
m |
|
|
|
| 1.1.2 Mechanical Forces |
|
|
| - Maximum straight pull tension |
100 |
kN |
| - Maximum tension on MBR |
|
|
|
84 |
kN |
| 1.1.3 Power core thermal data |
|
|
| - Maximum continuous conductor temperatures (normal service) |
90 |
°C |
| - Maximum continuous conductor temperatures (emergency) |
130 |
°C |
| - Maximum continuous conductor temperatures (short circuit) |
250 |
°C |
| - Conductor short circuit current for 0.1 s (90-200 °C) |
116 |
kA |
| - Metallic screen short circuit current for 0.1 s (70-150 °C)[1] |
18 |
kA |
|
|
|
| 1.1.4 Power core electrical data |
|
|
| - Conductor DC electrical resistance at 20 °C |
0.0601 |
ohm/km |
| - Cable reactance at 60 Hz |
0.13 |
ohm/km |
| - Cable capacitance |
0.25 |
mF/km |
| - Cable apparent resistance |
0.102 |
Ohm/km |
| - Positive/negative impedances |
0.131+j0.102 |
Ohm/km |
China National
Electric Wire&Cable Imp./Exp. Corp
