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870 posts

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  Reply # 1098917 30-Jul-2014 23:01
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Apparently the CyberPower UPS's for cheap cruddy ones arent too bad from PB so I've heard at the very least the warranty covers the UPS AND the battery for 2 years....

I usually wont touch a UPS under 3KVA now. I can recommend this:
http://pricespy.co.nz/product.php?p=818776  Good price note it excludes power cable but has everything and requires a 15A style power socket (the one with the enlarged earth pin) preferably connected to a 20A circuit.




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  Reply # 1099092 31-Jul-2014 10:26
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Since the question was wanting a UPS that would run a server for 45 minutes...

will they really need to go for a sine wave UPS, not just a consumer grade square ware UPS
Some PC power supplies dont like square wave power, would that be even more of an issue after 1/2 hour+
Also, cheaper consumer grade UPS's wont have adequate cooling to allow for a 1/2 run (safely) . Buy a UPS that has a fan .

So should he be looking at a Backup Power device , NOT a UPS

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  Reply # 1099586 31-Jul-2014 19:27
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1101: Since the question was wanting a UPS that would run a server for 45 minutes...

<snip>
So should he be looking at a Backup Power device , NOT a UPS


3KVA UPS on one server will last quite awhile and if not get an extended runtime module.

According to the charts 1x 300 watt server connected to say something like an APC SMT3000I  will run for 1 hour and 46 minutes.

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  Reply # 1099784 1-Aug-2014 05:27
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as i mentioned above a 3000kva ups at work lasted 20 minutes on a load of just over 1kw, so thats well over an hour with a 300 watt load



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  Reply # 1102937 5-Aug-2014 21:47
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Hi All,

Thank you for all the input.

I have made a recommendation to purchase an APC unit with 1500 VA which should give sufficient time to cover an outage and then to effect a controlled shutdown of the server.

There will be a decision to be made about how to long to wait after a power failure, before initiating the shutdown I guess, but that's another question, and I'll post a separate query when that comes up.

Thanks,

Alan.

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