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Submarine cable cross-section.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...n_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...osssection.jpg
Previously:
https://www.homemadetools.net/forum/...1676#post94385
https://www.homemadetools.net/forum/...3490#post99233
https://www.homemadetools.net/forum/...077#post120567
https://www.homemadetools.net/forum/...225#post121393
I'd like to have the copper from a 100 ft of those main conductors
It looks like 3 phase power cable to me. My guess is that it is not run very far.
Rick
must be power cable.Quote:
Originally Posted by rgsparber
Data cables have been fiber optics for decades.
I think it's fake. They had one on Gilligan's Island once, and it looked nothing like this.
I give you an A+ for a wonderful sense of humor.Quote:
Originally Posted by Harvey Melvin Richards
Rick
What do you mean sense of humor? I saw that episode and he’s right!Quote:
Originally Posted by rgsparber
OK, you get an A+ too...Quote:
Originally Posted by Radioman
Rick
Yup. The capacitive losses over any significant distance on that cable would be substantial. If you ran two of them side by side you could have a good upgrade path to HVDC.Quote:
Originally Posted by rgsparber
Based on the core insulation I would think they are running in the low to mid-Khz range to be effective for the primary phases. But that is some serious amps...likely a lower voltage. Early Aircraft and old navy stuff used to run at 400hz. Also interesting are the 2 conductors at 11 and 5 O'clock which appear to possibly be some form of Coax although the Braid wire is quite large or even Cu tubing?? Brings a whole new meaning to multi-conductor control and power cable.
Nice and clean that 'sample', the installed is usually filled with tar/bitumen or similar to fill the voids to prevent crushing and is an absolute nightmare to work with, the French were still using it in optical fibre cables the last time I looked, and insisting any repair work done on French owned fibre was done using Alcatel manual fusion splicers, which with a good operator had a 25% success rate on average on a ship in flat still conditions, the Japanese automated fusion splicers averaged better than 99.5% on a rolling ship in heavy seas...
A cutaway, instead of the previous cross-section:
Fullsize image: https://diqn32j8nouaz.cloudfront.net...y_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...le_cutaway.jpg