Guys
I'm sure I should know the answer to this, but just can't seem to find anything
in my literature or on the web. A friend (G7ODR, cc'd on this email) and I
have scratched our heads, but the more we discuss the problem, the more complex
it becomes.....
If I use a 3 phase transformer (either a 380v or 415v primary) on a 240v single
phase power supply, then what will happen in the secondaries?
I think the transformers that I have access to are delta input and star
output. They're open 3-bobbin jobs rather than potted or enclosed.
Can I wind the secondaries in series without overloading the insulation?
Could I wind them in parallel? Would I hit core saturation problems?
So, to put a few figures on it, if it's a 12kva 3 phase 380v in, 6kv out, what
would happen with the various permutations if I try to wire it onto 240v single
phase?
I'm actually looking for 4.5kv RMS out at 10kva and can get a
single phase one custom wound, but at a price (£950 from TEC). Anyone in the
UK know of a cheaper but quality source?
Phone a friend, ask the audience etc.... ;-)
Any ideas appreciated.
cheers
Dave G0OIL / K2MOO
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