Well that's a relief, thanks for the info Allan. I don't have much
experience with UPSes on specced for anything other than 120 or 240 (no
need for UPSes in my colo... or there hasn't been so far...), so between
you and Doug I feel a lot more comfortable wiring up a circuit for this
thing.
Thanks!
Nick
On 7/13/2012 5:49 AM, Allan West wrote:
Nick
As Doug said, the APC UPSes handle a very wide range of input voltage
with no trouble. I used to be on a campus with 208V power everywhere,
but now I'm off-campus where 120V and 240V are the norm.
My office is in a commercial leased space in a residential area, so we
use a SmartUPS 3000 with the 240V input to power our rack, which expects
208V power. The rack PDUs handle the 120V side for the servers. I had a
nice chat with APC tech support about the input and outputs before we
bought it, and the UPS is quite capable of handling the various voltages.
NOTE: Also, you may need to set the input sensors not to call 240V a
spike and alarm or switch to battery. I think our unit came with the
widest sensitivity, but I've had units from the factory with the
narrowest sensitivity set.
Enjoy the new toy!
Allan
On 7/13/12 12:51 AM, Doug Hughes wrote:
I just checked the specs for that unit online. It's a wide sensing
input, as most single phase devices are:
http://excessups.com/smartups-3000-rackmount-dla3000rmt2u-sua3000rmt2u-208v-p-74.html
Input voltage range for main operations: 141 - 255V
You can plug it into 240V no problem, as long as you have the right
receptacle.
On 7/13/2012 12:14 AM, Nick Whalen wrote:
I appear to have become the victim of my own hastiness. I picked up
an APC 3000VA 208V UPS (DLA3000RMT2U) with the corresponding
208v->120v transformer (SURT005) for $200 from a guy on Craigslist.
Being in a hurry to get home, I missed the fact that these are _208v_
when I looked up the units on APC's website. If my electrical
knowledge serves me right this is two legs off commercial 3-phase
service voltage.
Obviously I do not have three phase in my home, where these were going
to be used, so my question is this... have any of you had experience
running 208v equipment on 240v single-phase mains (most likely using a
buck autotransformer)? If so, do you have suggestions on where to get
an appropriate autotransformer?
My other option is to just turn around and re-sell these things to
someone who could use them on 208v; or swap with someone for a 120 or
240V unit of a similar capacity (moving your server room to commercial
power?). I'm in the Seattle area of Washington state, in the unlikely
chance someone wanted units like these.
Nick
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