Before I even attempt to answer your questions sagargv or analyze what could have possibly happened , I need to know in black and white the following facts from Bullzi -
What is the status of Your UPS? Is it working Ok with a different PSU ( any brand) .This I need to know so as to rule out a concern - Could this screw up be due to some faulty UPS?
I have had in the blast fumed my APC UPS twice ,some moisture creeped inside it , actually a lot of moisture due to the AC being on whole night , a thick film of moisture had condensed on the floor and the moment I switched on the UPS it fired up.
Are all the sockets of the UPS ( battery ones and the mains one) working fine on a different PSU.
If you havent checked out and ruled out a faulty UPS then please do so before attempting anything else and keep us posted.
Are you sure that your PSU has blown up and is absolutely dead.Have you even tried confirming it?May be it's the UPS which has gone and you are not aware of it as you havent checked it out.Check your UPS first elsewhere.
I again emphatically say that a simulated sine wave has absolutely no role to play whatsoever in blowing up a Power Supply .It's just the under powered UPS which is responsible for it.Upgrade your UPS for this PSU and voila you'll have no problem.
And above all why the hell do you need an Active PFC power Supply in India .
Got money to burn - eh - come to me - I 'll help you how .
dominator
U can also try using a stabilizer in b/w the UPS and the PSU to smoothy out the rising edge of the pseudo sine wave nd modify it to more pure sinewave like. And remember to use gud stabilizers like V-Guard ones that we use with refridgerators or ACs.
AVR ( automatic Voltage Regulation ) doesn't matter since it's not modifying the sine wave, it's merely drawing more or less current on the mains side as voltages rise or fall.
AVR would play an absolutely ZERO role in smoothing out the rising edges and on the contrary providing an AVR between the PSU and the UPS would be highly irritating .It would continuosly producing a cutting sound.yeah you can place the AVR before the UPS for double protection and not after the UPS .AVR is meant to be used with a true sine wave and not with a stepped sine wave or whatever modified sine wave
Aditya
Not trying to under estimate your understanding of the topic under discussion but just for the sake of adding to my knowledge and / or correcting myself , I need to know that where exactly did you read that ACTIVE PFC is meant to work with true sine wave only and not with simulated or stepped sine wave .Can you please provide a link or something to confirm what you claim.
There are PSU's with active pfc which are compatible both with pseudo as well as real sine wave ups and this fact is mentioned on them very explicitly .Ex. power supplies from enermax and various others.
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He convinced me that APC uses stepped sine wave approximation and there is no need to worry about active pfc. The problem bullzi is facing is not widespread. I have already talked to people who are using apc backup series with active pfc psus.
Exactly , and I strongly feel that it's bullji's UPS at fault , and may be as per APC's knowledge base , his UPS is underrated for this PSU
Cheapest UPS with true sinwave from APC costs 10k. The price is due to high voltage regulation which is useless because psu already does a great job.620hx takes care of all power problems except power cuts.
I completely agree
ATI Hyderabad recently bought around 180 620HX. I will found out what UPS they are using. Will return after 25 days
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I am waiting very anxiously to know the same
Sagargv , we are discussing in VA , not in KVA .
KVA is a thousand times more than a VA and one would never ever in life need a 1000KVA , 1100KVA UPS or PSU