|
PureBytes Links
Trading Reference Links
|
This may be wrong, but don't worry, someone here will correct it:
Suppose that the total continuos wattage your computer equipment
attached to the inverter will be 1000 watts.
Calculate the battery's amp/hour reserve power. You can get this from
the battery specs. The Optima D34 Marine gel
battery has reserve capacity of 120 minutes. So:
Amp/Hours = 120*0.3 = 36 amp/hours per D34 battery
Since it takes about 10 DC amps for 1 AC amps of power use, estimate maximum
battery power required as follows:
Continuous load (watts) / 10.
In this example:
1000 watts/10 = 100 amp/hour draw.
So, 100/36 = 2.77 or 3 D34M batteries required to run 1000 watts of
equipment for just over 1 hour.
Friday, February 14, 2003, 9:39:00 AM, you wrote:
ME> On Fri, 14 Feb 2003, Jimmy Snowden wrote:
>> David,
>>
>> How many 'puters are you needing to power? Mark's system was big time,
>> as in a bunch of them. All you need is a load factor to pick the size
>> inverter you need. Then get enough Marine batteries to supply the 12
>> volt DC side of the inverter and a hand full of high quality battery
>> jumpers to connect all the batteries in parallel.
>>
>> Be sure to tell us about your experience and post photos so we can
>> vote for best system after words.
>>
>> Jimmy Snowden
>>
>>
>> Friday, February 14, 2003, 11:14:46 AM, you wrote:
>>
>> DJ> Some time ago I came across a UPS which was designed by Mark Brown - this
>> DJ> might be a red herring. It was built from boat batteries and an inverter(s).
>> DJ> Does anybody know where I might find a copy of the doucument.?
>>
>>
>> DJ> MTIA
>>
>>
ME> How do you calculate the load factor?
ME> Mike
--
|