[foxboro] UPS backup time
- From: "Hitesh B. Kakadiya" <hiteshk70@xxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Thu, 17 May 2007 13:59:09 -0400
Hi List,
Does anyone know of any international standard which clearly specifies how
much backup time should a UPS offer when supplying to DCS ( or SIS)? I am
facing a situation where several conflicting client standards call for
opposite requirements. One standard mentions 30 minutes backup should be OK.
Other mandates for 60 minutes. One more standard says two UPS are not
required and an emergency supply in lieu of a secondary UPS feed should be
OK.
I referred API RP 554 but it is too general on these aspects.
Any help is sincerely appreciated.
Hitesh
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