Re: [foxboro] UPS backup time
- From: "Jones, Charles R. \(Chuck\)" <Chuck.Jones@xxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Thu, 17 May 2007 14:20:52 -0400
I am not aware of any standard for determining the needed UPS back up
time. I figure that, since it is insurance, you buy however much you
think you will need to cover yourself during your projected "bad
situations". The more you need, the more it costs. For example, we
have a generator on site that exists to be used whenever the power goes
out (which is pretty rare). We guessed that 30 minutes gives us enough
time to assess the situation and decide whether to fire up the generator
or perform a controlled shutdown of our control computers. So, we
bought 45 minutes worth of UPS backup time. =20
Chuck Jones
Automation Technologist
Tate & Lyle -- Lafayette Plant
Office 765.477.5324 | Cell 765.586.5290
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