Small 48 VDC UPS?

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.
Reply to
Floyd L. Davidson
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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
Reply to
sphealey
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.
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If you want reliablility, that is *the* way to go.
Reply to
Floyd L. Davidson
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
Reply to
sphealey
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...
Reply to
David Lesher
Try APC's DC Power System, model IWS200A54/FLL, 52-56 V, 7.5A, 400W. Used extensively, here, to power channel banks etc by non-Bell (can't remember the right term) who bring in voice/data on T1s. made in Galway, Ireland, if you can believe.
TerryS
Reply to
TerryS
Thanks! I thought that such a device had to exist, but extensive searching on the APC web site turned up nothing.
For reference, it is called the WS200 in the North American market and is a special-order only item.
sPh
Reply to
sphealey
Its on the way to the trash can if they don't pick it up soon !
TerryS
Reply to
TerryS

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