Automatic equipment, consisting of pumps and oil reservoir, keeps the oil in the pipe under constat pressure regardless of expansion or contraction of conductors or pipe. To reduce possible damage caused by oil leaks, pipe is sealed off where splices or connections are made. Oil for splice chamber by-passes through valve system that automatically cuts flow to it if a leak develops. Cable lengths up to 4,000 feet. Bolted or welded joints every 1,500 to 2,500 feet.
Joints isolate terminal sections.
Mechanical sleeves in place of sweated connectors. Porcelain high-tension terminals. The above article is interesting especially for those who might be working on their own high voltage experiments using Oudin or Tesla type coils. We have been looking into various ways to increase the current levels in conjunction with high pressures. Spark gap quenching through the use of pressurized gas containers using nitrogen or any other inert gas offers intriguing possibilities.