Many thanx for all these informations. I'm
a little bit concerned about how few power these transformers carry. You said, a 25kVA
transformer for up to 5-6 houses? Looks very
weak to me, especially when I think of
all the air condition units running everywhere.
As I said, here in Germany, 1-family-buildings in residential
neighborhoods get about
63A * 3 phase + neutral * 230V
= 44kVA in total. I understand that the PoCos
in the U.S. are interested to keep the
tension as high as possible and as near to
the custom as possible to avoid loss in the leads (sorry for my bad technical English), but I can't believe that it should be easier
to service these lots of funny (sorry :-) trashcans on a pole compared to one central
transformer station per street or block.
Nevertheless It's very interesting
to see how power supply is done in other
parts of the world.
Greetz from Hamburg
kmt
