RE: High Voltage but Low Current fuses...

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Christopher \"CajunCoiler\" Mayeux by way of Terry Fritz <teslalist-at-qwest-dot-net>" <cajuncoiler-at-cox-dot-net>


Looks nothing like the fuse that's been sitting around in my
junk box for the past decade...

http://members.cox-dot-net/cajuncoiler/Images/fuse.jpg

It's for use with a pig, and the associated
ceramic fuse jack.  It's rated 7 amps -at- 4800 volts.
Amazingly simple as to how it works... it
essentially keeps tension on the spring in the
fuse jack that holds the jack closed... when the fuse
blows, the spring is loosened, and the jack drops down
in the hinge, then it swings open via gravity.

 > Jim sent me two fuses he had.  They are PT fuses rated at 4800V 2
 > amps.  The current break rating is 50,000 amps!!!  That is 200+ MVA!!
 >
 > http://hot-streamer-dot-com/temp/P7180039.jpg
 >
 > Basically, just a fiberglass tube filled with sand.  A very thin wire was
 > wrapped around the center fiberglass board at about 2 turns per
 > inch.  Very simple really.