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Dell XPS 9000 vs SW5548

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Posted by Ron Rosenfeld on February 23, 2010, 11:33 am

Does anyone know if this computer will run on an SW5548?

My wife just purchased one for our "on-grid" home and we discovered that an
APC UPS (BackUPS RS-1500), that works fine with older models, will not work
with this one.

Apparently the XPS9000 PSU apparently requires a better quality "sine
wave".  The UPS can be upgraded.  APC's SmartUPS series is supposed to

But now I am wondering if anyone knows if the power at our "off-grid" home,
from our SW5548's, would be "good enough".


Posted by news on February 23, 2010, 4:33 pm

On Tue, 23 Feb 2010 06:33:09 -0500, Ron Rosenfeld

I can't answer your specific question, but perhaps a different line of
investigation would prove fruitful.

What is the voltage of your battery bank?

Have you looked for a PC power supply that uses that voltage as its

PC power supplies that run on 12/24/48 volts DC are available - not
cheap, but available.  And they are more efficient than the DC->AC->DC
conversion you are doing with the inverter.

Example: 250 watt supply, 6 to 30 volt DC input


Posted by Ron Rosenfeld on February 24, 2010, 4:47 am

On Tue, 23 Feb 2010 11:33:36 -0500, news@jecarter.us wrote:

Not a bad idea, except it would be more trouble than it's worth to run DC
wiring from the location of the battery bank to the location of such a

Posted by Bruce in alaska on February 23, 2010, 7:14 pm

Why would you want a UPS connected to a Trace SW5548 Inverter/Charger in
the first place? Just plug your computer into the Trace and be done with
it.  I have lived Off-Grid for 20 years, and generate ALL my own power.
I have a Trace Inverter/Charger that runs All the Micro-ISP Hardware,
(Servers, Routers, Switches, Access Points, SAT Modems, etc) and isn't
even a SW Series, but a U2624SB Modified Square Wave unit. I have a
SW4024, and a SW4048 that run the Cabin, and all the Workstations,
inside. Never had to worry about UPS's as the Trace does that job just
fine. We run one of a pair of 20 Kw Diesel Gensets, for 10 hours a day,
(7Am to noon, 5Pm to 10Pm) and that keeps the Batteries charged,
Freezers cold, and Telco System Batteries charged.

Bruce in alaska
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Posted by Bob F on February 23, 2010, 8:39 pm

Bruce in alaska wrote:

That's what he's asking. Since the computer didn't work on the UPS, he's worried
it won't work on the Trace.

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