UPS -- Uninterruptible Power Supplies
- 540 Watts, 900 VA
- USB-only Connectivity
- 320 Joules Surge Rating
- Business-Class Extended-Runtime UPS
- Runtime: 62 Minutes @ 100 Watts
- Runtime: 27 Minutes @ 200 Watts
- Runtime: 15 Minutes @ 300 Watts
- Runtime: 05 Minutes @ 540 Watts
- Back-UPS XS 900
- Back-UPS XS/RS Manual
- RBC32 Battery
- Back-UPS XS / RS Runtime Chart
- XXX One of these units can not keep the G5 Running.
When power-fail occurs, the unit overloads and goes offline.
However the little CS 500 has no problem doing it.
It looks like the voltage drops, so the G5 PS increases current,
which results in a voltage drop, which ... and the setup
self-destructs to overload.
- Product code BExxx
- Home Grade UPS.
- BE350 XXXX
- BE550R 330 Watts 550 VA
- 365 Joule Surge Suppression
- Runtine: 13 Minutes @ 165 Watts
- Runtime: 03 Minutes @ 330 Watts
- Recharge Time: 24 hours
- I find these little guys useful for printers, routers, wireless,
and other low-draw parts.
- Of the APC UPS units I own, these have the worst fitting battery doors.
The unit somewhat rocks on the floor because the battery
door won't close flush.
It works fine, though!
- ES Family Product Page
- ES Runtime Chart
This is the older, excellent RS1500.
The new "G" models are pieces of junk, don't buy one.
Why APC stopped making such an excellent unit is beyond me.
- RS xxxx series
- Buck / Boost AVR
- BR24BP extended runtime external battery pack.
- Battery: RBC33
- Product code SUAxxx
- Sine Wave output UPS
- Battery: RBC7
- ??? surge supression
- Runtime:
- Recharge Time:
- APC Smart-UPS 750/1000/1500 XL Manual
- 940-0024C == APC serial cable to talk to the Smart-UPS.
My APC Business series Back-UPS units ahve served me handsomely across
the years.
I will admit that they are not the greatest in the world, but they
work reliably and keep my systems up.
I would prefer spending the money on Smart-UPS, but they cost a lot more!
- The APC RS1500G tries to run off the line way more than the RS1500
does. It is supposed to have better battery life because the
battery isn't used as much.
Downside ... the battery takes much longer to recharge, though
it is less expensive.
Reports of excessive fan noise are also reported.
- The APC RS1500 UPS has buck/boost AVR (Auto Voltage Regulation) circuitry.
That means when the line is over or under-voltage, it regulates
the line voltage and keeps on running off the line.
- The APC BX series have Buck AVR circuitry. It will keep on running
on line when it is over-voltage, but will revert to battery
when an under volt condition occurs.
- The APC CS series does not do buck/boost, but just runs off the
battery when over/under voltage situations occur.
- I had an interesting talk with APC one day with an engineer.
He pointed out the things to consider when evaluating battery lifetime
and UPS selection.
- The first major point that he made is that with UPS units, the
more the battery is used, the less overall lifetime the
battery will have.
For example, in an area with good power, few outages,
a UPS battery may survive in fine shape for a 5 year
period.
That same UPS in an area when the battery is used more often,
either due to lack of buck/boost, or actual outages, the
battery lifetime will be noticeably less, say about 3 years.
- See my above notes on what UPS features the various models have
to get an idea of how long the batteries may last!
- Many APC External batteries often treble the lifetime of a UPS
unit, because the typical external enclosure has twice the
battery the UPS itself does.
Bolo's Computer Notes
Bolo's Home Page
Last Modified:
Fri Feb 18 17:50:16 CST 2011
Bolo (Josef Burger)
<bolo@cs.wisc.edu>