PC shutting off after power outage

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rounakr94

rounakr94

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Jul 28, 2013
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My PC has a UPS that was bought on June '12 and has goven me uninteruppted service till date, the problem is that now when a power cut or a surge occurs the ups sometimes fails. So what will happen if pc shuts down like this, will any components be damaged on the short run until a new ups is bought.

System specs in Signature.
Thanks for any help.
 
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UPS are three orders of magnitude too slow to protect devices from surges any better than a typical surge protector does: surges occur on the microsecond scale while UPS take milliseconds to switch from AC to battery power.

As far as outages are concerned, the main risk is losing data from either simply not having saved it or, if you are especially unlucky with timing, data getting corrupted due to the storage device losing power in mid-write.
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Titan
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May 18, 2007
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UPS are three orders of magnitude too slow to protect devices from surges any better than a typical surge protector does: surges occur on the microsecond scale while UPS take milliseconds to switch from AC to battery power.

As far as outages are concerned, the main risk is losing data from either simply not having saved it or, if you are especially unlucky with timing, data getting corrupted due to the storage device losing power in mid-write.
 
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Titan
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May 18, 2007
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That depends on how much power your system is actually drawing. If your system and peripherals on battery backup draw 200W and the UPS has a 140Wh battery, you can expect 30-40 minutes of backup. If the total draw is 400W, the time might be closer to 10 minutes.

If your current UPS has power monitoring capabilities and is connected to your PC, you should be able to use that to see how much power your are currently drawing through it and that would give you the value you need to look up in the run time charts.

Many newer UPS have front panel displays that will tell you right there how much you are using too, though these are mostly on units 1000VA and up.
 
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