wrote:

------------------------ You are absolutely correct.

I looked at this for a particular transformer ( 100KVA, 1000/200V) and the result is that the input current was about 3200A at 200V applied with individual primary and secondary currents of 800 A and 4000A respectively as compared to 1000A/5000A short circuit currents.

Parallel mutual inductances where L1 =L2 or M^2 <<L1*L2 will work. That is 1:1 turns ratio or weak coupling is OK.

------------------------ You are absolutely correct.

I looked at this for a particular transformer ( 100KVA, 1000/200V) and the result is that the input current was about 3200A at 200V applied with individual primary and secondary currents of 800 A and 4000A respectively as compared to 1000A/5000A short circuit currents.

Parallel mutual inductances where L1 =L2 or M^2 <<L1*L2 will work. That is 1:1 turns ratio or weak coupling is OK.

--

Don Kelly snipped-for-privacy@shawcross.ca

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Don Kelly snipped-for-privacy@shawcross.ca

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