steel cable as a transformer core?

could i use thick steel cable as a transformer core (1 inch stranded cable) if i saturated it in a nonconductive (epoxy? rubber cement? ect..?   material to eliminate eddy currents and molded it into a double C core?

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No, because steel is permanently magnetic. Two things will happen - it will constantly blow the fuses, because the input impedance at switch on will be very low, and the core will get hot as it magnetises and demagnetises.

pwnag3 (author)  steveastrouk6 years ago
would low carbon steel work, and it will be oil cooled, so heat is not that much of a problem
There's a very good reason why transformers are ALWAYS made with "soft iron", not steel. It'll do SOME kind of transformation, but its always going to have a tendency to blow fuses.
pwnag3 (author)  steveastrouk6 years ago
i don't use fuses, they blow too often, and i have some high power circuit breakers, but do u have any clue if they make soft iron cables? it's the easiest thing i can think of
The metal sheathing wire AROUND electrical cables is usually pretty soft.
pwnag3 (author)  steveastrouk6 years ago
good point, ill try and check the local junkyard for soft cables and such, i may also get soft iron sheets and laminate it traditionally, but ill decide later, i like the idea of a transformer made of cable, but it must work so, i'll look for somthing pretty soft, and corroded xD
Burf6 years ago
Unless you have a way to pressure inject the insulating material, short of untwisting the wire rope, you'll never get each strand completely insulated.
69buickgs Burf2 years ago

You could draw it into the cable using a vacuum. Pull the air out, resin goes in.

rickharris6 years ago
+1 all replies.

I can't imagine winding a 1 inch cable round anything It's big enough to moor ships.- How BIG do you intend this core to be?

I Really Really must read the question thoroughly - write out 100 times Harris.

You do indeed say as a core.
pwnag3 (author)  rickharris6 years ago
the cable will be the core, im planning on a 9-12 square inch core, planning on a 1:1000 transformer submerged in oil
frollard6 years ago
Should work, so long as you laminate it to avoid the eddy's you should be okay. If it forms a complete loop anywhere it will have problems.
pwnag3 (author)  frollard6 years ago
thanks for backing my theory, i researched this for hours, and found NOTHING about using steel cables for transformers
frollard pwnag36 years ago
and as Burf says; it will be VERY difficult to get the resin into the cable unless you unwind the strands and insulate them.