Power Transformer help!

[SVI2004A]

I have a Technics SE-A3MK2 Amplifier which is 120V we have 240V here, the amp has 2 identical transformers in it (no longer available) the only thing i can think of is connecting primary windings in series & connecting all secondary windings in parallel
would this be the way to go?
is there any issues to look for?

Regards Baily

[mrlots2do]

Originally posted by SVI2004A
I have a Technics SE-A3MK2 Amplifier which is 120V we have 240V here

Here in the USA 240v circuits are two hot legs and a ground. I could not use this as two 120v circuits as code requires a current carrying neutral leg for each 120v circuit and a ground. I could use one neutral but the current carried by that neutral would be equal to sum of both 120v circuit.

I could get what I need by running new pairs from the main distribution panel to the point of service (one 120v circuit, one neutral and a ground).

Phil

[mrlots2do]

Sorry, didn't answer your question. You could split the 240v circuit to two 120v circuits then apply one 120v leg to one 120v primary coil and the other 120v leg to the other primary coil. But than we are back to my first post... No, No, No.... Can not have current travel on earth safety groung wire.

Re-read my post above for best practice and as always safety first.

Phil

[SVI2004A]

to clear this up... this amp was from usa
in Australia we have 240V AC 50hz (single phase)
3 phase is 440V here

the amp has no gnd/earth pin
double insulation

[SVI2004A]

ok..... i done it orready... it does have a twist,
the primary windings of the x'fmrs were in parallel, with one x'fmr primary connected in opposite polarity - reason being to create a C.T. winding from 2 identical x'fmrs in mirror image (180deg phasing) which was utilised in the front end circuitry...
to keep v/drop even over each x'fmr i parallel conected the power amp (main secondary windings) in parallel but in mirror image

the amp works a treat- i tested for voltage drops across secondaries (phase shift etc) all come up virtually 0V on a 3VAC range

so i thank myself on this outcome

i hope it is of some use to fellow aussies who cop a narrow voltage ranged US amplifier - the same model that goes to the rest of the world ALL are Multi Tap primaries (maybe the manufacturer does not trust americans to get the voltage selector right) though i wonder why as they run on the lowest voltage (i dont think the amp will be damaged from undersupply - it may not run, bit wont be damaged (afterall they recommend that a variac be used to check after repair)

stay tuned - Baily