[AusNOG] Bottom of rack UPS

[Gaurab Raj Upadhaya]

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On 12/16/10 4:31 PM, Trent Lloyd wrote:

> I've run a 2.2KVA UPS on house power for a few years as have many
> associates of mine and not had any issues through brownouts, black
> outs, overvoltages, etc causing a trip.
> 
> Have you actually run into this issue of it breaking in real life?

I have seen this happen, not necessarily in Australia, but elsewhere.
2.2KVA is well within the safe limits compared to the 3KVA. Some
mathematics.

10A power draw at 220-240V would be 2200-2400W. 2200W is the typical
Australian power supply. .

A 2.2KVA UPS with power factor of .8 (typical with UPS) would draw 1760W.

A 3KVA UPS with power factor of .8  would draw 2400W.

So, while the 2.2KVA UPS is in a safe bracket, with the 3KVA its on
marginal grounds.

- -gaurab

- -- 

http://www.gaurab.org.np/


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