[Nut-upsdev] 3phase progress?

[Niklas Edmundsson]

On Mon, 31 Oct 2005, Peter Selinger wrote:

> Hi Niklas,
>
> I looked at your document, but I didn't understand what it is about.
> What is a "phase"?  What is "3phase support"? Clearly I must have
> missed an earlier discussion.

The discussion was back in march.

http://en.wikipedia.org/wiki/Three-phase_electric_power is a rough 
introduction to three phase power.

Executive summary is that large UPSen in Europe usually are three 
phase devices (our 120kVA APC Silcon at work, the 220kVA Siemens unit 
at the UmU datacenter, the 25kVA Fiskars 9250 at the computer club for 
example), and three phase awareness in NUT would finally allow us to 
use sane software for those large installations for real.

My proposal is designed to have minimum impact on existing (single 
phase) UPS drivers and at the same time providing support for all 
capabilities needed for/provided by larger equipment.

/Nikke
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  Niklas Edmundsson, Admin @ {acc,hpc2n}.umu.se      |     nikke at acc.umu.se
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