[106491] in North American Network Operators' Group
RE: big DC -48V to AC inverters
daemon@ATHENA.MIT.EDU (Tomas L. Byrnes)
Wed Jul 30 21:35:43 2008
Date: Wed, 30 Jul 2008 18:35:24 -0700
In-Reply-To: <4407932e0807301735o49a715dk9f7eb7cd7d50011@mail.gmail.com>
From: "Tomas L. Byrnes" <tomb@byrneit.net>
To: "Tim Jackson" <jackson.tim@gmail.com>, "Andreas Ott" <andreas@naund.org>,
<nanog@merit.edu>
Errors-To: nanog-bounces@nanog.org
If you do invert, don't forget the cooling budget. Inverters run HOT!
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> -----Original Message-----
> From: Tim Jackson [mailto:jackson.tim@gmail.com]=20
> Sent: Wednesday, July 30, 2008 5:36 PM
> To: Andreas Ott; nanog@merit.edu
> Subject: Re: big DC -48V to AC inverters
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> Unipower out of florida.. They can provide scalable inverters=20
> for 120 and 208/240. Modular N+1 setups and very flexible..
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> We have a large 200amp 120vac setup from them. I'd recommend=20
> letting your electrician build a parallel setup instead of=20
> relying on their modules, however...
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> On 7/30/08, Andreas Ott <andreas@naund.org> wrote:
> > Hello,
> >
> > we are looking into providing power for 'legacy' equipment=20
> in a data=20
> > center that is exclusively giving us -48V DC power. The most recent=20
> > thread on this list was about -48V DC modems but in our case I am=20
> > rather looking into inverting on the order of 4 kW per rack=20
> from the=20
> > supplied DC into AC equipment. And yes, that's not the most=20
> efficient=20
> > use of power, we know it already ;-) .
> >
> > Does anyone operate devices like this that are capable of 2...4 kW=20
> > power conversion and do you have recommendations, good or bad=20
> > experience to share?
> >
> > Please reply direct to me and indicate if it's OK to use=20
> your answer=20
> > in a summary e-mail back to the list.
> >
> > Thanks, andreas
> > --
> > Andreas Ott K6OTT andreas@naund.org
> >
> >
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> --
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