See http://www.windsun.com/Batteries/Battery_FAQ.htm
Even deep cycle marine batteries can be crappy, with many actually
being a combination of starting / deepcycle. The primary difference
is the plates. Good deep cycles have thick lead plates. Industrial
batteries should last longer. Car
Daryl G. Jurbala wrote:
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Jean-Michel Hiver
Sent: Tuesday, May 31, 2005 5:22 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] UPS rating for SOHO asterisk box
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Jean-Michel Hiver
Sent: Wednesday, 1 June 2005 6:45 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] UPS rating for SOHO asterisk box
Daryl G. Jurbala
I have many sites that have a 35amp Charger with 2 x 400ah 900CCA deep cycle
batteries (10 year warranty), and 1000VA inverters.
Those deep cycles batteries look quite appropriate... in which kind of
store do you get them?
The combination makes for perfect power and about 2.5 days run
I have many sites that have a 35amp Charger with 2 x 400ah 900CCA deep cycle
batteries (10 year warranty), and 1000VA inverters.
Those deep cycles batteries look quite appropriate... in which kind of
store do you get them?
In the US just about any store that sells batteries including
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Terry H. Gilsenan
Sent: Wednesday, June 01, 2005 5:05 AM
To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
Subject: RE: [Asterisk-Users] UPS rating for SOHO asterisk box
I have
Hi,
Let me try to answer this one.
Assuming your P3-800 is using a 300watt power supply, then in a full
load condition, convert to VA, it will be 300/0.6=500VA. So, it is
greater than your small 400VA box. So, you need a bigger ups. Of course,
if your power usage is actually much lower than
Another thing to consider regarding the ups is the runtime, depending
on the hours and minutes you want the ups to supply power to your
asterisk box, you may need to add more batteries to the ups.
Regarding this, I have done this hack yesterday:
- Remove the battery from an existing UPS
-
Assuming your P3-800 is using a 300watt power supply, then in a full
load condition, convert to VA, it will be 300/0.6=500VA. So, it is
Thanks for that info. Where does the /0.6 come from? I've always
wondered about VA which looks like VoltAmps.
There are 400, 500 and 600VA models. The
On Tue, 2005-05-31 at 13:22 +0400, Jean-Michel Hiver wrote:
Another thing to consider regarding the ups is the runtime, depending
on the hours and minutes you want the ups to supply power to your
asterisk box, you may need to add more batteries to the ups.
Regarding this, I have done
Normally, the power factor is taken as 0.6, thus to convert watt to va,
just divid the wattage by 0.6 to get the va rating.
cheer
Wilson Pickett wrote:
Assuming your P3-800 is using a 300watt power supply, then in a full
load condition, convert to VA, it will be 300/0.6=500VA. So, it is
Another thing to consider regarding the ups is the runtime, depending on
the hours and minutes you want the ups to supply power to your asterisk
box, you may need to add more batteries to the ups.
No worry there, since the modems (upstairs) will be unpowered as well.
Although the asterisk
I have a PIII-800 box with two X100P and one TDM400P plus graphics
adapter, an IDE hard drive etc. Will a small 400VA box be enough for
this?
It's tricky sizing UPS'es to be bang on the money. The rule-of-thumb
calculation for VA is watts/.6 . So, for a 200 watt power supply / .6 is 333
VA.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Jean-Michel Hiver
Sent: Tuesday, May 31, 2005 5:22 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] UPS rating for SOHO asterisk box
[...]
Regarding
Message-
From: Jean-Michel Hiver [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 31, 2005 4:22 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] UPS rating for SOHO asterisk box
- Remove the battery from an existing UPS
- Rewire the UPS onto
On Tuesday 31 May 2005 10:50, Daryl G. Jurbala wrote:
Kidsdo NOT try this at home. The inverters in small UPSes are not
designed to deal with runtimes that exceed the batteries in them. If
you run this setup well past the time it was designed to run (by adding
3, 4, or more times that
get a kill-a-watt or lacrosse power monitor for $30 and leave it
running for a few days. then you can sort throw the data and know what
your power draw really is..
On 5/31/05, Andrew Kohlsmith [EMAIL PROTECTED] wrote:
On Tuesday 31 May 2005 10:50, Daryl G. Jurbala wrote:
Kidsdo NOT try
Use deep cycle marine batteries or similar. Car batteries arn't
really designed for long low power, they're designed for CCA, high
output short burst.
Nick
On Tue, May 31, 2005 at 01:22:09PM +0400, Jean-Michel Hiver wrote:
Another thing to consider regarding the ups is the runtime,
-4140
-Original Message-
From: Andrew Latham [EMAIL PROTECTED]
To: Asterisk Users Mailing List - Non-Commercial Discussion
asterisk-users@lists.digium.com
Sent: Tue, 31 May 2005 14:59:24 -0500
Subject: Re: [Asterisk-Users] UPS rating for SOHO asterisk box
get a kill-a-watt or lacrosse
Living in the Caribbean, this is a big issue for us. I would avoid the
little SOHO UPS units, they will not last very long. Always over rate your
UPS and I would not play with external batteries, it is more trouble than it
is worth. You can buy refurbushed 3U rack mount UPS on Ebay for little
Hello,
APC has a nice selector tool on their website.
http://www.apc.com/tools/ups_selector/index.cfm
It asks several questions to recommend an APC solution. it even gives
you a percentage of the capacity of the ups systems capacity.
Original Message
From: Wilson Pickett
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