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Thread: uninteruptable power supply

  1. #1
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    Default uninteruptable power supply

    so im looking online for a ups that will last through a few hours of our local blackouts

    what i'm looking at on ebay is coming in at around 300 bucks for the absolute best deal (damaged case products) link

    on the egg the best deal looks like half the specs for 319
    CyberPower Rackmount CPS1500AVR UPS - Newegg.com

    wanting to get some experienced wisdom / advice on what i can do for my home on this
    learning is good .....understanding is better .....pleas teach with wisdom............................................ ..............calemus

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    Default Re: uninteruptable power supply

    most ups products are not designed to do what you described..... keep the power running for a few hours....they are designed to allow machines to save and close down properly in the event of a power failure.

    If you go to the apc site and look up APC Smart-UPS RM SMT3000 or similar you should find some charts or graphs showing battery capability in minutes (when new) to keep various loads running.

    A set up to do what you described is either going to cost a whole bunch more in batteries (limited life) or will need to include a standby generator and the associated paraphernalia to connect it to your house.


    You might achieve the same but cheaper if you were to just have a small generator you could fire up by hand then connect your ups to after a failure

    on line ups's provide line conditioning but look out for those which provide pure sine wave output in order for them to work seamlessly with modern psu's.
    Rig2: 2*e5-26xx (16c/32t @2.4), Asus z9 pe-d8 ws, 32gb ripjawsz under water, rig3 2*e5-26xx (16c/32t @2.4), Supermicro 7047A-T 16GB 1600 ecc reg, on air, Rig4: 2*e5-26xx (16c/32t @3.1), Supermicro x9 DAi 16GB 1600 ecc reg, on air, Rig5: 2*e5-2660 (16c/32t @2.7), Supermicro x9 DRW iF 32GB 1600 ecc reg, on air

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    calemus (17-03-2014)

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    Default Re: uninteruptable power supply

    Quote Originally Posted by grumpydaddy View Post
    most ups products are not designed to do what you described..... keep the power running for a few hours....they are designed to allow machines to save and close down properly in the event of a power failure.

    If you go to the apc site and look up APC Smart-UPS RM SMT3000 or similar you should find some charts or graphs showing battery capability in minutes (when new) to keep various loads running.

    A set up to do what you described is either going to cost a whole bunch more in batteries (limited life) or will need to include a standby generator and the associated paraphernalia to connect it to your house.


    You might achieve the same but cheaper if you were to just have a small generator you could fire up by hand then connect your ups to after a failure

    on line ups's provide line conditioning but look out for those which provide pure sine wave output in order for them to work seamlessly with modern psu's.
    What he just told you is spot on I have a APC Smart-UPS 1500 attached to my system which will close my documents and shut down my system if I should experience a power outage

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    calemus (17-03-2014)

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    Default Re: uninteruptable power supply

    but look out for those which provide pure sine wave output

    so the "pure sine" digital sinewave replication is a absolute must then eah?
    learning is good .....understanding is better .....pleas teach with wisdom............................................ ..............calemus

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    Default Re: uninteruptable power supply

    It is certainly preferable. I have heard tales of woe concerning the interaction of psu's with the cheaper, less smoothed, type. If you google "ups sine wave vs stepped" you will find a whole bunch of info. Some folks say it is snake oil whilst others, notably electrical engineers, try to explain what is happening. I guess the bottom line is how often you expect to power stuff from ups and for how long.

    Put it this way.... I would not connect a brand new 4k tv to a cheap ups for fear of killing the psu.
    Rig2: 2*e5-26xx (16c/32t @2.4), Asus z9 pe-d8 ws, 32gb ripjawsz under water, rig3 2*e5-26xx (16c/32t @2.4), Supermicro 7047A-T 16GB 1600 ecc reg, on air, Rig4: 2*e5-26xx (16c/32t @3.1), Supermicro x9 DAi 16GB 1600 ecc reg, on air, Rig5: 2*e5-2660 (16c/32t @2.7), Supermicro x9 DRW iF 32GB 1600 ecc reg, on air

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    calemus (17-03-2014)

  9. #6
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    Default Re: uninteruptable power supply

    pure sine it is
    learning is good .....understanding is better .....pleas teach with wisdom............................................ ..............calemus

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