Need UPS for 550W active PFC computer power supply.

captaincandellight · Jul 18, 2014

I need a UPS for my 550W computer power supply which has Active PFC.（PF>0.95 at Full Load）. It is the Silverstone SST-ST55F-G power supply with 80 plus gold certification.

My budjet is from $100 to $200. It is being said that computer power supplies with active PFC will work only with pure sine wave UPS systems. So I want a UPS which is line interactive or online with pure sine wave.

The computer that I will use it with is a Dell Inspiron 545MT desktop mini tower. The specifications of this computer are as fallous:-

The operating system in use will be Windows 7 home premium 64 bit.

The recommended PSU watage after inputing all the above specifications at extreme.outervision.com is - 285W.

Should I consider VA ratings or should I look at only the watts the UPS is able to deliver.

Please let me know. Thank You.

ko888 · Jul 18, 2014

It is being said that computer power supplies with active PFC will work only with pure sine wave UPS systems.

That isn't true in all cases. I've used a Corsair HX750 Active PFC PSU with a stepped approximation to a sine wave APC Back-UPS XS 1300 UPS and it worked absolutely fine.

That APC Back-UPS XS 1300 eventually failed due to APC's decision to use poor quality CapXon electrolytic capacitors on its circuit board.

Should I consider VA ratings or should I look at only the watts the UPS is able to deliver.

Choose based on the UPS' Wattage capacity and the desired run time when operating on battery backup power.

captaincandellight · Jul 19, 2014

I found this Cyber power UPS at http:// It is a CP1000PFCLCD which has 1000VA / 600W and is Pure Sine Wave UPS. It has also got a "recomended buy" award from the Tomshardware UPS reviews. How is this UPS. Thank You.

ko888 · Jul 19, 2014

captaincandellight :

Are you going to be plugging in any of your monitor(s), broadband modem, router, ..., etc. into the battery backed-up outlets on the UPS?

captaincandellight · Jul 19, 2014

Yes I will be plugging in one IN1910N flat panel monitor, Dell AY410 speakers, a pixma mp480 printer scanner, a broadband modem and a router into one battery backed-up outlet of the UPS by using a belkin eight plug power strip. Thank You.

ko888 · Jul 19, 2014

If you can get the CyberPower CP1000PFCLCD, for whatever location you live in the world, then it should be sufficient to do the job.

captaincandellight · Jul 20, 2014

Will the power strip cause any hinderence in perfomance. Thank You.

ko888 · Jul 20, 2014

captaincandellight :

As long as all of the devices connected to the power strip don't exceed the maximum current draw allowed from the battery backed up outlet on the UPS there will be no hindrance in performance. Since the devices that you are plugging into the power strip are not high power draw devices you don't have anything to worry about.

captaincandellight · Jul 20, 2014

Thank You

captaincandellight · Jul 22, 2014

I got one more problem
The mains grid where I stay is a 230Vac one. The Cyberpower site is saying adjustable input range for CP1000PFCLCD is -
Input voltage 90Vac - 139Vac and
Adjustable Voltage Range 78Vac - 142Vac.
So can I adjust it to work on my mains grid. Please let me know. Thank You.

ko888 · Jul 22, 2014

captaincandellight :

The CP1000PFCLCD is made mainly for the North American market's power grid.

There is a CP1300EPFCLCD which is the model made for the European market's power grid (Input: 165Vac - 265Vac, Output: Pure Sinewave at 230Vac +/- 10%)

In India the pure sine wave UPS that is made by CyberPower that is enough to meet your requirements is this one, no doubt it's much more expensive:
http://www.cpsww.co.in/products/ups_systems/pr/pr750elcd.htm

captaincandellight · Jul 23, 2014

Can I use a transformer to use the CD1000PFCLCD.

ko888 · Jul 23, 2014

captaincandellight :

What's the power rating of the transformer?

Do all of your devices have the correct AC plug that will fit into the UPS' AC sockets?

captaincandellight · Jul 24, 2014

I have not selected a transformer yet. Yes all of my devices have the correct AC plug except the power supply cord it has a USA 10A 125V AC plug.

ko888 · Jul 24, 2014

captaincandellight :

The CP1000PFCLCD uses all North American AC outlets (i.e. NEMA 5-15R).

captaincandellight · Jul 25, 2014

I went to grabmore.in and they told me the converter will be included with the CP1000PFCLCD.

ko888 · Jul 25, 2014

captaincandellight :

If they're willing to guarantee that it'll work, then get it.

captaincandellight · Jul 26, 2014

They are offering a one year warrenty and a thirty day replacement gareenty with defictive products post thirty day can be serviced buy paying certin charges put down by the grab more global warrenty team.

But what about all the North American AC outlets.

ko888 · Jul 26, 2014

captaincandellight :

I showed you a picture of all of the AC outlets on the back of the UPS and told you that they are all North American AC outlets (i.e. NEMA 5-15R).

CyberPower doesn't make a CP1000PFCLCD model for the India market.

Need UPS for 550W active PFC computer power supply.

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