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Re: [TCML] 100kVA trannies as salvage?
Im supposing that your plans with the EI core material is to make an
inductor....? If so, if you use the flashing, what plans do you have to
insulate the turns/winds/wraps from each other? How thick is the center
core of the EI assembly ( sqr. inches wise)? A rough amps per sqr. inch
of core material is about 5A per sqr inch. So ... about 14 sqr inches of
core should be heafty enuf to prevent saturation at 70 or so amps. When
winding an inductor/transformer, one also needs to consider the number
of windings needed to keep the turn to turn voltage at the required
level. On average, it seems to be about 1-2 volts per turn. Not sure
what it is for flat plate style... as in flashing usage. If you use the
flashing of .012 with an insulator of .01 at 200 winds, that equates to
about 4.5" of window width ( not height), is your EI core wide enuf
between the center core and outer cores?
Anyway as far as current capacity, .014 X 4" =.056 sqr inches and if my
math was correct, thats about equal to a #2 - 3 wire. For 70ish amps, I
believe a # 6 or 8 copper solid core wire with THHN insulation would be
sufficeint. Using wire instead of flashing would reduce the required
widow width by almost half...
david baehr wrote:
I have a 10kva pig that Id like to push 'up to' 70+ amps
i now use a short peice of electric dryer element ( approx 3-3.5 ohms ) in a 5 gal bucket of water, it doesnt take long for the water to boil !!
I have a bunch of transformer ' E ' & 'I' laminations . The winding window is close to 6" tall, so i thought of using 4" wide flashing. It comes in .012" - .014" thick ??? .....not sure how much current 4" / .012" aluminum could handle ?
Thanks!! ,dave B
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