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kvsubramanyam
Guru

Join Date: Apr 2007
Location: Hyderabad, India
Posts: 596
Good Answers: 12

What's the Best UPS?

12/04/2009 12:52 AM

Hello everybody. Which is best 100KVA UPS with DC link voltage 1000V or 500V or 48V best I mean UPS efficiency wise. If anyone can tell me best possible efficiency of each will be very helpful. UPS must be Off-line and interruption not more than 1 ms.

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 Subramanyam
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Anonymous Poster
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Re: What's the Best UPS?

12/04/2009 10:57 PM

Generally higher the DC Bus, higher the efficiency as the current for same power is less and power loss is proportional to square of current. The best is to ask the supplier about the efficiency figures of the UPS as the same depends on no. of factors like technique used in switching, frequency of switching, input THDi etc.

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Sanjeev
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