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Finished with Isolation Transformer.
Original poster: "Richard W. by way of Terry Fritz <teslalist@qwest.net>" <potluck@xmission.com>
Hi all,
Finally finished the isolation transformer I've been working on.
Specs:
All wire #10 magnet wire
Transformer is under oil
6.2 KVA @ 240 vac input
7.28 KVA @ 280 vac input
Three primaries @ 240-280 vac
Four secondary pairs ... Each pair = two 60-70 vac coils @ 13 amps
Isolation:
Secondary to core and secondary to primary insulation:
2 sheets 1/16" polypropylene sheet from McMaster Carr
40 KVDC (calculated to 75KV at 600v per mil for the polypropylene used)
Core cross-section = 6.25 x 2.25 (14.0 sq in)
Tested with 23.4 amp load powering a kitchen oven. After 1/2 hour the
containment temperature was slightly over room temp.
Will be used to power a MOT bank.
ftp://ftp.xmission.com/pub/users/p/potluck/pics/Isolation2.JPG
Rick W.
Salt Lake City