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'[EE:] APC 1000 Pro schematic'
2004\05\19@175109 by SavanaPics

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anyone know a source for the schematic on the APC 1000 Pro UPS ?

Eddie Turner, kc4awz

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2004\05\19@195806 by Mark Jordan

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       Last year I looked for a similar schematic but couldn't find it.
       APC support sucks. At the last resource I draw some parts of the
schematic from the PCB and managed to repair the UPS myself.

       Mark Jordan, PY3SS


On 19 May 2004 at 17:51, .....SavanaPicsKILLspamspam@spam@AOL.COM wrote:

> anyone know a source for the schematic on the APC 1000 Pro UPS ?
>
> Eddie Turner, kc4awz
>
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2004\05\20@044400 by ahid Sheikh

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Same here. APC has a policy to not issue any repair manuals/schematics.
They want their UPS to be sent to them for repairs.

I resorted to drawing the schematic myself by tracing the tracks on the
PCB to repair it.

Shahid

{Original Message removed}

2004\05\21@203822 by Lee McLaren

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If you want I have .gifs of the Smartups and the Backups. I don't think it
covers the 1000 but they appear to be very similar through the whole range.
They run to about 3MB.


LM

{Original Message removed}

2004\05\21@224737 by Norris Smith

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I, too, would be interested in these schematics.  I have a few APC's
that have been sitting in a closet that I would like to repair.  Do you
have them on a web site; if not, could you send them by email?

Thanks, Norris



Lee McLaren wrote:

{Quote hidden}

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2004\05\21@234923 by Shawn Wilton

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I'd like them as well.


Shawn Wilton
Junior in CpE
MicroBiologist

Phone: (503) 881-2707
Email: EraseMEshawnspam_OUTspamTakeThisOuTblack9.net

http://black9.net


Norris Smith wrote:
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2004\05\22@040735 by Matthew Fries

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I salvaged an APC backup from a dumpster a few months ago, and the only
thing wrong with it was that it needed a new battery. Though I would like
the schematics in case it went bad. Can you post it somewhere?

BTW: All of the APC backup models list their ability in terms of VA. I have
no idea what this VA is supposed to mean (volt-amps maybe? I dunno, but
wouldn't you normally call that WATTS?).



At 08:49 PM 5/21/2004 -0700, you wrote:
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Remove the BALONEY from my email address.
-----------------------------------------------------
Matthew Fries       Minneapolis, MN    USA
@spam@freezeKILLspamspambaloneyvisi.com

"Quit eating all my *STUFF*!" - The Tick

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2004\05\22@041149 by Alessandro Queri

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Me too! I have three of them which are dead.

Ale

On Fri, 21 May 2004, Shawn Wilton wrote:

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2004\05\22@041357 by Lee McLaren

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I have sent the files to a number of people, If any have room they may
publish on the web. I only have a slow Internet connection so I will give it
a few days to see if anyone else can publish, otherwise I will start mailing
to those that request.

regards

Lee McLaren

{Original Message removed}

2004\05\22@050835 by Russell McMahon

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Pico-tutorial on Watts, VA, reactive AC loads and power factor:


> BTW: All of the APC backup models list their ability in terms of VA. I
have
> no idea what this VA is supposed to mean (volt-amps maybe? I dunno, but
> wouldn't you normally call that WATTS?).

Volts x Amps = Watts for a purely resistive load. If the load is partially
reactive (either capacitive or inductive) as most real world loads are to
varying extents, then the peak current and peak voltages do not occur at the
same time. The current and voltage waveforms are 'out of phase" and V x A =
VA is not equal to watts AND is greater than the Watts drawn by the load. In
the limiting case, when the load is purely reactive, voltage and current
waveforms are 90 degrees out of phase and there is NO power drawn even
though voltage is present and current flows.

The power supply is rated in terms of the current it can deliver and this is
essentially the same regardless of whether the load uses the current to
create power or merely circulates it in a reactance. So the power supply
(here a backup unit) is rated in VA and its up to the user whether this is
used to the full or not. Real world industrial loads are often inductive and
:power factor correction" capacitors are often added to make the overall
load more like a pure resistance. This is not getting something for
nothing - the capacitors can be thought of as storing the reactive current
from the inductors and delivering it when the resistive load requires it OR
as nulling out the inductive effects (all the same, different metaphors).

This problem is not limited to AC power supplies such as your inverter. AC
power distribution systems have to account for the current flow and highly
reactive loads require oversized generation and delivery systems (wires,
transformers etc). Industrial users have to ensure their plants have a
certain power factor (related to reactive component) and those failing to do
so attract severe cost penalties from the power suppliers.



       Russell McMahon.

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2004\05\22@073208 by redtock8

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I'd like them also.

RemoveMEredrock8TakeThisOuTspamalltel.net

----- Original Message -----
From: "Lee McLaren" <spamBeGonelmclarenspamBeGonespamTASNET.NET>
To: <TakeThisOuTPICLISTEraseMEspamspam_OUTMITVMA.MIT.EDU>
Sent: Saturday, May 22, 2004 4:13 AM
Subject: Re: [EE:] APC 1000 Pro schematic


> I have sent the files to a number of people, If any have room they may
> publish on the web. I only have a slow Internet connection so I will give
it
> a few days to see if anyone else can publish, otherwise I will start
mailing
> to those that request.
>
> regards
>
> Lee McLaren
>

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2004\05\22@184624 by SavanaPics

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definately count me in

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2004\05\22@233417 by Bob Blick

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OK, here it is, I'll have it there until end of day Monday, so get it quick:
http://www.bobblick.com/APC.zip

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2004\05\22@234907 by SavanaPics

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many thanks Bob

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2004\05\23@090746 by redtock8

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Thanks Bob

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From: "Bob Blick" <RemoveMEbblickspamTakeThisOuTSONIC.NET>
To: <PICLISTEraseMEspam.....MITVMA.MIT.EDU>
Sent: Saturday, May 22, 2004 11:42 PM
Subject: Re: [EE:] APC 1000 Pro schematic


> OK, here it is, I'll have it there until end of day Monday, so get it
quick:
> http://www.bobblick.com/APC.zip
>
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2004\05\23@131506 by Satyadev Vyas

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I would like them as well please.

Satyadev Vyas

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2004\05\23@174000 by Peter L. Peres

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About VAs vs. Watts (a message I posted recently on another list):

---
The power rating on most UPSs is in VA, not W, because the UPS has a
limited capability to cope with high cos phi situations. So Adding up the
Watts on the connected appliances may not be right, if they have high (and
not compensating each other) cos phi values. Typical items that may upset
your calculation are fluorescent lights (which have inductive lag from the
ballast choke) and squirrel cage motor fans (which have inductive lag).
Modern monitors and computer power supplies do not cause problems
however, although they have a small capacitive lead.

As an example:

fluorescent light = 40W at cos phi = 0.8 will take 40W but 40/0.8 = 50VA.
A 220V,50W fan with cos phi=0.6 will take 50/0.6 = 83VA. As you can see
the VAs add up faster than the W's. You want to calculate the VAs to see
if the UPS will carry the load. For most normal situations adding the
Watts and leaving a generous safety margin (30% or so for 2-3 computers
and 2-3 monitors) will be enough. For this consider the UPS power rating
in VA, as being Watts.

Peter

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