Wednesday, May 14, 2008

UPS Calculations and Learning

You have a bunch of equipment you want to install on the UPS, but you don’t want to overload it.

The calculator below, will help you work out how much VoltAmps you are drawing, and from there we can work out what UPS solution will best suit you.

I found a Volt Amp (VA) Calculator here: http://www.csgnetwork.com/upssizecalc.html

1. Get a piece of paper and write down how much volts or amps, each devices requires. (should be on a sticker attached to each power adapter)
2. Enter the voltage for our country at the top (230 volts)
3. Ignore the device names, and just enter your voltage or amps, for each device on a separate line.
4. When complete, click Calculate results. The bottom result will tell you how many VA or VoltAmps your equipment is using.
5. Then you can come back to me and I can recommend the best priced solution for what you want to protect.

The UPS you have in your office is the 375C, it protects against blackouts, surges and sags. It also provides eight minutes of power, at shutdown to allow for proper shutdown of equipment. Quite a well priced unit, for what it does. It handles up to 375VA at maximum load.

The next model up in the offline series is: 575VA.

There are other models and series that handle much greater amounts of power, right up to the sort used to power hospital floors.

The other thing to keep in mind, is what kind of power protection you want. I believe the offline series would be sufficient for your HIFI system, however here is a link to learn up about the different types of bad power, and what to do to protect it.

http://en.wikipedia.org/wiki/Uninterruptible_power_supply

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