Small 48 VDC UPS?

Small 48 VDC UPS?
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Subject Author Date
Small 48 VDC UPS? sphealey 08-09-2005
---> Re: Small 48 VDC UPS? Floyd L. Davids ..08-09-2005
Posted by sphealey on August 9, 2005, 11:21 am
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Our plant is entirely AC, with DC only in the large equipment control
system cabinets and not distributed anywhere. We are installing some
small telecom equipment at various locations around the plant that
wants 48 volt DC input. Our current solution is to plug a small APC or
similar UPS to domestic power, then run the output from that to a
120VAC-to-48VDC converter on mounting rails. This is a bit messy and
results in a lot of unneeded terminations and safety requirements.

Does any of the big UPS manufacturers make a small desktop or rack
mount unit (by small I mean < 500 watts) that takes 120VAC input and
provides 48VDC output on a telecomm connector? I haven't been able to
find any at APC, Liebert, or Tripplite, but it seems such a thing
should exist.

Thanks.

sPh



Posted by Floyd L. Davidson on August 9, 2005, 10:41 am
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>Does any of the big UPS manufacturers make a small desktop or rack
>mount unit (by small I mean < 500 watts) that takes 120VAC input and
>provides 48VDC output on a telecomm connector? I haven't been able to
....

Use google and search on the words "lorain power". You'll
probably come across not just Lorain equipment, but distributors
that have other brands too.

--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@apaflo.com


Posted by sphealey on August 9, 2005, 12:52 pm
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> Use google and search on the words "lorain power". You'll
> probably come across not just Lorain equipment, but distributors
> that have other brands too.

Been there, but I haven't found anything less than 10,000 watts / 12U.
Those distributors do have some nice 100,000W and above systems though
;-)

sPh



Posted by Floyd L. Davidson on August 9, 2005, 12:45 pm
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>> Use google and search on the words "lorain power". You'll
>> probably come across not just Lorain equipment, but distributors
>> that have other brands too.
>
>Been there, but I haven't found anything less than 10,000 watts / 12U.
>Those distributors do have some nice 100,000W and above systems though
>;-)

They have a very nice little 1.5 KVA standalone unit with an
internal battery (7 mins at full load and 18 minutes at half
load), and a 2.0 KVA model that is rack mount with external
batteries.

http://www.loraintechnology.com/

If you want reliablility, that is *the* way to go.

--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@apaflo.com


Posted by David Lesher on August 9, 2005, 10:30 pm
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>> Use google and search on the words "lorain power". You'll
>> probably come across not just Lorain equipment, but distributors
>> that have other brands too.

>Been there, but I haven't found anything less than 10,000 watts / 12U.
>Those distributors do have some nice 100,000W and above systems though

Decades back; A friend worked there and designed many of those style units.
He once joked about a specialized 9vdc @ 5000A or so unit -- he wanted mile
long bus-bars with periodic transistor-battery snaps on it so he could recharge
many thousands at once...

--
A host is a host from coast to coast.................wb8foz@nrk.com
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433


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