Hexaphase transformer configurations

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I haven't encountered any in use, but #17 is what I think of when hexaphase is mentioned.

Three center-tapped secondaries with the center taps joined as, or to a common neutral.
 
Hexaphase transformers are available from 'Winny & Whitney transformers Company'
Their motto is 'Hexaphase transformers r us'.
:)
Seriously though I think thats configuration available on gen sets.
As far as transformers Winny & Wayne are the only ones I have ever herd about it from:

Large Residential

Hypothetical scenario here.. say one is designing a large multi-family residential building, and the building wanted to have all units at 240/120 1ph 3w, and the utility is provided at, say, 12kV 3ph. What is the 'typical' way to do this? I'm imagining that this would be done by having...
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Using High-Leg Delta for Japanese Appliances?

Ok, so the use case you are describing is to provide both full 240V so generic North American appliances will work properly, and 208V (as an in tolerance substitute for 200V) so that Japanese appliances will work properly. This is for large high value buildings. So you are envisioning a large...
forums.mikeholt.com

How would the primary connections work from a three phase system?

:unsure:

hexaphase_transformer.png
 
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