How Much Battery Do I Need For 1200w Draw

dafuqawew · Jul 27, 2013 140 0 10,680 0

hey guys i need a UPS for my Workstation PC it has a 1200 watts power supply, i e'er employ on a full load for 3d rendering in 2k resolution, i have a dual Cpu motherboard. I really need UPS for my PC , and for my professional works , so my question is, if i have 1200 watts power supply should i purchase 1200 watts UPS ? or i can by any UPS ?? PLEASE ANSWER thank you !!!

GhislainG · Jul 16, 2008 23,968 3 74,965 2,699

You have to understand that a 1200W PSU draws merely as much as required. If your system requires 200W at idle and your PSU is fourscore% efficient, so it will draw (200/80 * 100) which is 250W. If your batteries are four-v years one-time, so I'd be surprised if the UPS passes the battery exam. Instead of conecting your system, connect something else like a 100W lite bulb and encounter if the UPS stays powered upwards for at least an hr. I have a Smart-UPS 1000 and a Smart-UPS 1500 and they can run for at least 1/2 hour when my systems are idle (except the 1500 that shutdown within a couple seconds when in that location was a power outage and the batteries were at least 3-4 years old, but that's normal). Y'all tin can buy 8A batteries, but you probably won't detect 14A batteries at that size and characteristics; even if you did, I certainly wouldn't recommend that you do since the UPS wasn't designed for those.

2x4b · October 28, 2013 775 0 11,360 185

Sorry, but it is more complicated than that.

If your power supply is an 80 Gold or Platinum for instance, so that means that it will be taking at least 20% more than that that from what it is plugged into (wall or ups) than the 1200 watts information technology will supply to the system.

In other words: 1200/0.8=1500 watt UPS.

Only and then all of that may be overkill. For example if your system is only drawing 400 watts full, then all y'all demand may be 400/0.eight=500 watt UPS, fifty-fifty if your PSU has the capacity to supply more. You will need to know exactly what your organization draws in order to cut corners like this, and you could destroy the UPS and your organisation if you err.

The adjacent matter yous will need to consider for your UPS is for how many minutes you lot need information technology to supply your rated ability for. That essentially equates to the size of the batteries in information technology.

http://www.apc.com/ has a wizard that can walk y'all through how to select an accordingly sized UPS for your organisation.

chris987

y'all dont necessarily need a 1200w ups. you need a ups with watts equevelant at least to the maximmum load of your arrangement. yous can measure through a power plug meter your consumption (witch is more authentic than software measure)http://world wide web.newegg.com/Production/Product.aspx?Item=9SIA1EF14T6794 you can also use this site
http://www.apc.com/tools/ups_selector/alphabetize.cfm to help you lot choose one.

lonewolf7

Whatever UPS will do, it depends on how many minutes you lot want for back-up in power failure situation.

With 600VA UPS y'all will have around five-ten mins of backup fourth dimension.

And UPS doesn't depend on PSU or vice-versa, so you lot can take any.

hunter315 · May 12, 2009 10,653 1 51,960 1,236

Thats not quite correct lonewolf, if you exceed the maximum output capabilities of the UPS it will just shut off. If your UPS only has an inverter capable of handling 600W and yous try to depict 900W from it, the inverter cannot magically grow in capacity to keep up with the load then the UPS will immediately close off and its as though you lot didn't accept a UPS in the outset place. Watts and VA are a mensurate of instanteous power, Watt-hours are a mensurate of how long it will proceed your system on for, these are very different numbers in a battery based system.

In general, yous don't need a UPS the aforementioned size equally your PSU, find out what is in your machine and you can accurately ballpark the power consumption and figure out how large of a UPS you need from that.

GhislainG · Jul 16, 2008 23,968 3 74,965 two,699

Whatever UPS will exercise, information technology depends on how many minutes yous want for redundancy in ability failure state of affairs.

With 600VA UPS you lot will have effectually 5-10 mins of backup time.

And UPS doesn't depend on PSU or vice-versa, and then y'all can have any.

With all the hardware the OP has, a 360W UPS will well-nigh likely shutdown if at that place'south a power failure. The UPS has to be powerful enough for the maximum load and then the OP needs to make up one's mind how long it should run. Without knowing why the OP bought a 1200W PSU, I'd propose a 1500VA UPS.

lonewolf7

To hunter315 and GhislainG, tin can I enquire both of you lot a simple question ! If the OP doesn't use a UPS and plug the PC directly to the wall, 1. how many volts he will exist getting from the wall ? Information technology differs from country to country like (240V@60Hz, 220V@60Hz, 110V@50Hz) and and then on.....

2. Will his PC run or not ? (without a UPS)

hunter315 · May 12, 2009 10,653 i 51,960 ane,236

1. Any 1200W PSU is going to have Active PFC, information technology has to or it would be tripping breakers similar no ones business, so the PSU doesn't care what voltage it gets from the wall. Not sure why y'all are request what voltage it would go from the wall though, in general that doesn't make a pregnant deviation, and as you said earlier information technology varies by region

ii. Yeah of class it volition run without a UPS because the only restriction on the power capacity of the wall outlet is the breaker down the line, a 15A breaker on a 110V line gives you lot access to 1650W of power.

I'll exist honest, I'm not really sure what you are getting at here lonewolf

lonewolf7

So you gave the answer of your own question. And then when you lot ordinarily connect the PC to the wall, it delivers a power of 220V. So the output of the UPS also has to exist the same to make the PC work. The 600VA is the maximum rating of ability it can handle.

I dont think it would matter much. Only your backup time would go down or up, depending on what your PC'south total ability usage is. Don't wait at your PSU, just calculate what your full power consumption is of the PC.

I found this item, and a discussion about the power factor which explains why there is no exact match betwixt the two, that might be useful to anyone else who might take questions about this -- http://www.powerstream.com/VA-Watts.htm.

And hither's another proficient one : http://world wide web.generatorguide.cyberspace/watt-acpower.html

GhislainG · Jul 16, 2008 23,968 3 74,965 2,699

I can't effigy out what you're trying to say. 120V or 220V is voltage, non power. Power is expressed in watts (volts x amps = watts). You lot can't presume that a 600VA UPS means a 600W UPS; you accept to check the manufacturer's specs. If a UPS tin provide 360 watts, and so it will trip if the load is exceeded to protect itself (just similar a 15A billow trips if the circuit draws 20A).

http://www.apc.com/resource/include/techspec_index.cfm?base_sku=BN600 provides 360W maximum. As you can run into, the graph stops at 360 considering it powers off when that load is exceeded.

hunter315 · May 12, 2009 x,653 1 51,960 1,236

Ahhhh i found the source of the confusion, once you commencement getting into power the units start getting confusing.

5 and VA are non the same thing, VA(Volt-amps) is a unit of power with a slightly different definition from watts. Simple loads like toasters draw the same number of watts and volt-amps, more than complicated loads like a motor with its big anterior roll will describe more volt-amps than watts, merely active PFC makes computers await more than similar toasters so we will work off of watts for the sake of this word.

The UPS will output the same voltage equally it takes in from the wall, lets say 100VAC(Volts-alternating electric current) for easier math, if the UPS has a 600VA capacity and a 600W capacity(easier discussion) then the computer can describe up to 6A from it, this will be a total describe of 100V*6A=600VA=600W.

Now if the UPS doesn't have a large inverter to it just is hooked to a massive battery bank it might have a 1200Wh(watt-hr) battery bank, this means that you can pull 200W for half-dozen hours, or 600W for two hours, or 1200W for 1 hour from that battery bank, but y'all can't pull 1200W from your 600W inverter downward stream so if your load is trying to pull 1200W even though the bombardment banking concern could back up that for an hour the inverter that converts it from DC-AC voltage cannot then the inverter will shut off to protect itself turning off power to the PC.

For UPS's because they are batteries feeding an inverter there are two primary stats, what is the maximum output of the inverter(Watts is the figure of import for computers), and what is the concord upward time for a specific load(this is determined by the size of the battery banking concern)

GhislainG · Jul 16, 2008 23,968 iii 74,965 2,699

A UPS is not 100% efficient. Assume 60% efficiency, a 600VA UPS provides 360W. In theory if an 85% 1200W PSU is loaded at 100%, it will draw 1200/85*100=1411W from the outlet; therefore the UPS would take to provide that much output power and, depending on its efficiency, it would depict 16-20A on a 120 volt circuit. In this case, an APC Smart-UPS 2000 would meet the requirements.

The OP has to determine his organisation's peak power draw instead of relying on the PSU specs and and so select a UPS that will meet the requirements.

lonewolf7 · May 6, 2013 five,113 i 24,965 i,105

Ok, this is not going anywhere, just a bunch of tech talk, to clear things up I just want to say, I have few high end PC'southward at my home, with large PSU's on them and every PC is attached to UPS ranging from 600VA to 850VA. And I am getting 5-10 mins fill-in time on ability failure situation depending on PC specs and UPS specs.

Then I am talking through my personal experience, that y'all can apply a lower capacity UPS with a higher capacity PSU, it doesn't matter, the only thing that matters is the redundancy time.

P.South. We don't know about the organization specs of OP, it tin can be that OP'southward power consumption during max load never reaches across 600W, and so a 1500VA UPS might exist an overkill and waste of coin.

GhislainG · Jul 16, 2008 23,968 three 74,965 2,699

What'due south the bodily ability draw on your systems at peak, according to your UPS? Y'all don't have problems because the UPS is non overloaded when a power failure occurs. That's why I said the OP has to know the tiptop ability depict of his system, not the useless PSU specs.

I too have my systems on 2 UPS (1000VA and 1500VA) and even though my servers PSU specs exceed the Smart-UPS 1500VA specs, I'thou not worried because the maximum power draw is less than 980W (approximately 600W which is good for at least 15 minutes). Equally the batteries get older, that fourth dimension unfortunately decreases.

lonewolf7

Yes I concord with you " As the batteries get older, that fourth dimension unfortunately decreases."

In most cases, boilerplate users do not need more than 600/700W, so a low power UPS tin handle that hands.

I can say I use a i7 with 2 x 780Ti with 5 2TB HDD's with ii ODD'south with 2x 22" monitor and XFX 850 PSU and a 750VA APC UPS, and my wattage never exceeds 750W, and then I never faced a problem with my UPS, where as the maximum wattage for UPS is 500W. But I couldn't get more than than 5 mins backup time.

Here is a link of my UPS : http://www.apc.com/resource/include/techspec_index.cfm?base_sku=sua750i

GhislainG · Jul 16, 2008 23,968 iii 74,965 two,699

You're fine considering, unlike the OP, you probably never run your arrangement at max load while a ability failure occurs. Even while gaming your arrangement doesn't exceed 500W. As a exam, run benchmarks to load the CPU and GPUs at 100% and then pull the plug on your UPS. If your full organization ability draw exceeds 500W, the UPS volition most likely shutdown. Delight note that the GPUs alone should draw 520W.

lonewolf7 · May 6, 2013 v,113 1 24,965 ane,105

Yep nobody uses their PC's on full load during power failure, so no question near gaming during power failure. We all are in a hurry to properly shutdown the PC, and it takes max two mins to do it. Cheers.

BTW where is the OP ? We are arguing for nothing for about 24 hours now and no sign of OP, LOL. Have a skilful 24-hour interval.

GhislainG

He's having fun reading this thread!

AndersAndersson

hey guys i demand a UPS for my Workstation PC it has a 1200 watts power supply, i always utilise on a full load for 3d rendering in 2k resolution, i accept a dual Cpu motherboard. I really need UPS for my PC , and for my professional works , so my question is, if i have 1200 watts power supply should i buy 1200 watts UPS ? or i can by whatever UPS ?? PLEASE ANSWER thank you !!!

I would buy at least a 1500watt UPS battery backup to cover a 1200watt power supply from hard experience. Read you need 20% more than the PSU is rated.

I have a 1200watt Pc Power & Cooling PSU with a small fraction of the wattage e'er in utilise now. I accept ane Graphics Card now, used to accept Three power hogs in Crossfire.
The large 1200watt ULTRA UPS battery backup I bought every bit an upgrade to handle my PSU ALWAYS clicks all the power right off instantly challenge OVERLOAD whenever the power goes out! Institute out fashion as well late as I never pulled the plug to exam information technology when bought. I stripped the outputs to But the PSU with NO MONITOR even and still turns off instantly. And practice non buy one that just says 1500VA or something ...must handle 1500watts. The companies practice not brand it clear at all. These are hard to detect and VERY EXPENSIVE for a casual gamer and toll a fortune to ship.

GhislainG

What model number is your Ultra UPS? If the UPS powers down when the PC is idle, then it's defective. If it's the PC that powers off, then it's because your UPS doesn't provide a pure sine wave output, non considering information technology isn't powerful enough.

AndersAndersson

What model number is your Ultra UPS? If the UPS powers downwards when the PC is idle, then it's defective. If information technology's the PC that powers off, and then it'southward because your UPS doesn't provide a pure sine wave output, not considering it isn't powerful enough.

It is Model#RCD-UPS2000D It is a 2000VA model.

Says also on rear characterization: Input: 12a Max Battery Backup Output: ten.9a 1200 watts Max

The UPS does non power down when Idle. The UPS just goes instantly OFF with no power down, when the plug to information technology is pulled or power outage happens.

I did the Self Test by pressing the power push button once and it went on battery for a 2nd showing simply one bar left at lesser...tried information technology once again a few seconds after and the whole thing turned all power off over again.

GhislainG

Your batteries are defective or the UPS is not charging them completely. Fortunately they are inexpensive, simply I presume there are 2 batteries since they just are 7A or 8A each?

2000 VA = 1200 Watts as nigh UPS have a 60% efficiency.

AndersAndersson

Your batteries are defective or the UPS is not charging them completely. Fortunately they are inexpensive, but I presume there are 2 batteries since they only are 7A or 8A each?

2000 VA = 1200 Watts every bit virtually UPS have a 60% efficiency.

The OVERLOAD PROTECTION Spec says: "If load exceeds 110% of nominal for lx seconds, 130% for 3 seconds UPS shuts downward automatically." In that I but become one second on bombardment before billow shutOFF it is probably OVER 130% draw. These PC POWER & COOLING PSUs were famous for supplying the steady Total amount of power as advertised at room temp unlike many others challenge high wattage but only delivered at odd temps etc. So I do not know if the 10.9a UPS output to the PSU is plenty and it might be drawing a Total 12a and bravado the breaker. The greenish confined are all at that place. They are perhaps 4-5 yrs former now but failed me a few years ago the same way when they should have been ok. I would hate to throw practiced coin after bad, but I do know the batteries do non last forever. I am wondering if I pull them whether I could club UPGRADED Higher amperage batteries in the aforementioned size like I did for my child's electric toy riding car. Twice the energy and runtime I call back it was.

GhislainG · Jul 16, 2008 23,968 3 74,965 ii,699

You accept to sympathize that a 1200W PSU draws simply as much every bit required. If your system requires 200W at idle and your PSU is 80% efficient, and so it will draw (200/80 * 100) which is 250W. If your batteries are iv-5 years sometime, then I'd be surprised if the UPS passes the battery exam. Instead of conecting your organization, connect something else similar a 100W low-cal bulb and see if the UPS stays powered upwardly for at to the lowest degree an hour. I have a Smart-UPS m and a Smart-UPS 1500 and they can run for at to the lowest degree 1/2 hour when my systems are idle (except the 1500 that shutdown inside a couple seconds when at that place was a power outage and the batteries were at to the lowest degree iii-iv years old, but that's normal). You lot tin purchase 8A batteries, only you probably won't discover 14A batteries at that size and characteristics; even if you did, I certainly wouldn't recommend that you do since the UPS wasn't designed for those.

AndersAndersson

You have to understand that a 1200W PSU draws merely as much as required. If your organisation requires 200W at idle and your PSU is 80% efficient, then it will draw (200/eighty * 100) which is 250W. If your batteries are 4-5 years old, then I'd be surprised if the UPS passes the battery test. Instead of conecting your organization, connect something else like a 100W calorie-free seedling and run across if the UPS stays powered upward for at to the lowest degree an 60 minutes. I have a Smart-UPS 1000 and a Smart-UPS 1500 and they can run for at least i/2 hour when my systems are idle (except the 1500 that shutdown inside a couple seconds when there was a power outage and the batteries were at to the lowest degree 3-4 years old, but that's normal). You tin can buy 8A batteries, but you probably won't find 14A batteries at that size and characteristics; even if you did, I certainly wouldn't recommend that y'all do since the UPS wasn't designed for those.

Ok Thank you. That solved it for me I think. I pulled the UPS and ran a 75 watt seedling on information technology and information technology but survived 5 minutes on that seedling! I checked the spider web and saw two-3 yrs is normal replacement time, so the batteries are shot. I will order new ones.

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How Much Battery Do I Need For 1200w Draw

Assist ! if my is ability supply 1200 watts should i purchase 1200 watts UPS ??

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