Want to move to all 208V for server racks
if at xip.at
Thu Dec 2 15:46:19 CST 2010
> It is probably worth nothing that a 3-phase input in Europe is actually
> 240/415 volt Y (for every panel I have seen in Germany at least, even
> the places I have lived there had 240/415 three phase). The normal 240v
> single phase outlet circuits were the phase to neutral voltage.
> Obviously Europe also runs at 50 hz vs 60 in the US as well but the
> three phase still works the same way.
> A Europe 64 amp 240/415 circuit is pretty close to equivalent in to a
> 277/480 Y configured 60 amp circuit in the US. The biggest notable
> difference is that equipment that runs on two different service voltage
> ranges where Europe has far less need for in-building step-down
> transformers since even small loads work on the phase-to-neutral voltage
> of the big services. I always find it interesting in the US to note how
> many 480v to 120/208Y step-down transformers one can find in a big
> building or datacenter.
aeh.. 230V / 400V is right voltage in technical terms in most european
(years ago it was 220V / 380V, before it was decided to go up with the
and in bigger datacenters there are also step down transformers from 10kV
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