UPS help needed

[Rapchik Killer]

Hey, i need some help regarding pc ups.. I have 3 pcs, two decent gaming pcs :

one with a cooler master extreme psu with 500w and an ati 5670 i3 3.0ghz all stock
the other with a cooler master 600w psue, gt430 and a core 2 duo 2.4ghz..
the third is a mac mini that takes less than 300w i think..

so i want a ups that runs everything without interruption, the backup time isnt that important but it should give around 5-10 minutes.. i also have 3 lcds, but they are not that important, i can skip that if its too much load..

 

[mzain90]

thats a total of 1400 watt, so go for something that can deliver atleast 1500~1700 watt


check specifically for power output in watt, and not in KVA

 

[Cerberus]

get a generator....

 

[Rapchik Killer]

yea i know its 1400w, but i want to know specifically a ups that wont restart my pc.. i could get a market ups instead of proper pc ones but im not too sure they would work without restarting the pc..

@faheemakbar: i have a generator, i want a ups to keep the pcs alive while i turn on the generator..

 

[FARSANG]

^then get a ups with the relay whose response time is in the order of 1 to 2 ms which are usually solid state relay.most ups found in the market come with electromagnetic relay whose response time is long which cause the pc to restart.

 

[hmir]

I would strongly suggest you read the following;

How big a UPS do I need? - http://www.jetcafe.org/npc/doc/ups-faq.html

Paying close attention to the commentary on Watts/VA.

" Computers are notoriously non-resistive. A typical PF (power factor: Watts/VA) for some computers may be as low as 0.6, which means that if you record a drain of 100 Watts, you need a power source with a VA rating of 167. Some literature suggests that 0.7 may be a good conversion factor, but this will depend heavily on the specific equipment. Moreover, there's really no way to determine these numbers besides measuring them."

 

[Juste]

What is your budget for UPS ?
what is your budget for batteries ?

 

[my3m]

u need 3kv ups that will need around 3 battery setup.....
the ups which dont restart pc are expensive....i think u will need around 40k for ups and around

 

[Cerberus]

u can make a setup by which generator turn on when light goes off

 

[FARSANG]

also make sure that inverter is pure sine wave or at least modifies sine wave.stay away from square sine wave.

 

[Rapchik Killer]

Thanks hmir that was some nice info in that document, made things quite a bit more clear..

so the way i see it, i am going at 1400w max power, something more or less impossible to be achieved unless all 3 pcs are running at their 100% which wont be happening.

so considering the equation above i should be fine with either a 2kv ups too but a 3kv one would be give me more room for connecting lcds and other devices..

can some ups guru please confirm what i said so at least i know what i need to get?

as for a 3kv ups, galaxy is selling an alfa digital 3kv ups.. any experiences? or any other suggestions?