hi-pot on 20 miles transmission line
hi-pot on 20 miles transmission line
(OP)
Hi,
simple question: is it possible to do a hi-pot test on a 20 miles overhead transmission line (11.5 kV). What kind of problems could we run into due to the length of the wire to test. The line is off since 1 year and we need to test it before putting it back on.
Thank you.
JL
simple question: is it possible to do a hi-pot test on a 20 miles overhead transmission line (11.5 kV). What kind of problems could we run into due to the length of the wire to test. The line is off since 1 year and we need to test it before putting it back on.
Thank you.
JL






RE: hi-pot on 20 miles transmission line
You could do an AC hipot, but it will take a pretty hefty unit to keep the line charged.
Usual practice of the line contractors I have worked with (not that many) is a thorough visual inspection, then energize the line. Some would do a low voltage AC injection test on shorter lines just to prove there were no grounds still hanging.
RE: hi-pot on 20 miles transmission line
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: hi-pot on 20 miles transmission line
With a 20-mile line, I'd be concerned about hi-potting some things that don't like being hi-potted. I don't think a dc high-pot test is going to tell you much and I would doubt that you could actually do it with a normal test set.
RE: hi-pot on 20 miles transmission line
Regards
Marmite