| Location Installed |
System
Voltage
(kv) |
Conductor
(mm²) |
Cable
Length
(km) |
Year
Installed |
Features |
| Singapore |
230 |
Various |
135 |
1974 |
Large quantity of extra high voltage OF cable. |
Grand Coulee Dam
USA |
525 |
1 x 1267 |
20 |
1977 |
The highest voltage OF cable in the USA (Elevation difference approx. 200m) |
Sydney
Australia |
330 |
1 x 1200 |
60 |
1979 |
The world's longest extra high voltage cable as an underground transmission line. |
Maracaibo
Venezuela |
230 |
1 x 830 |
29 |
1979 |
The world's longest extra high voltage cable line to be installed underneath a bridge. |
Riyadh
Saudi Arabi |
132 |
1 x 900
1 x 600 |
224
156 |
1981 |
One of the biggest projects involving the 132kv transmission system in the world. |
Siguragura
Indonesia |
275 |
1 x 200 |
5 |
1981 |
Installed in a 200 m vertical shaft. |
Seraya
Singapore |
230 |
1 x 2000 |
8 |
1992 |
One of the longest cables in a sea tunnel without joints, transported by heavy
300 ton drums. |
| Hydro Quebec |
800 |
1 x 2000 |
0.13 |
1993 |
The world's highest voltage PPLP OF cable. Lead sheathed cable. |
| Hong Kong |
275 |
1 x 1100 |
37 |
1993 |
The first PPLP-OF cables in Hong Kong. |
| Singapore |
400 |
1 x 2000 |
38 |
1997~ |
Low loss PPLP-OF cables in Singapore. |