Do power supplies with power factor correction (PFC) only work with Uninterrupted Power Supplies that use pure sine waves?

[efcfox1]

I want to get an Uninterrupted Power Supply (UPS) for my high-end computer in the UK. However, it's been said that high end power supplies with an active power factor correction (PFC) aren't compatible with low end UPS that use a "modified sine wave" like a square wave rather than a pure sine wave (https://www.dougv.com/2010/03/01/active-pfc-enabled-psus-are-not-compatable-with-most-low-end-ups/). The article says that PFC power supplies hate modified sine waves and will cut power to the computer, thereby doing the very thing you bought the UPS to avoid. Is this true?

Specifically, I have a UK Cooler Master Vanguard V1000W Power Supply Unit [which has an active PFC] for my high end PC. Is it compatible with the Power Inspired VIX2150 1500VA Uninterruptible Power Supply that uses a square wave according to the specifications (http://www.powerinspired.com/vix2150-1500va-uninterruptible-power-supply-p-1684.html)?
Would it be compatible with the Oxxtron Trust 1500VA Management UPS, in which the specifications don't indicate the waveform used (http://www.trust.com/products/product.aspx?artnr=17678)?

I'm trying to find a fairly inexpensive UPS ~£100. I know that the APC Smart-UPS 1500VA LCD 230V model uses pure sine waves, but it's too expensive at £430.

So, if in fact PFC power supplies can only work with a pure sine wave UPS, what budget friendly options are available?

 

[nostall]

Hope this helps.
I am using two Tripp-Lite UPS's on my two PC's; both have active PFC power supplies (mine = Corsair AX850, wife's = Rosewell CAPSTONE 650). Neither of the UPS's have a pure sine-wave, and they work just fine for back-up power when the lights go out.
I talked to Corsair re. the sine-wave requirement and they told me that I should be using a pure sine-wave UPS, BUT when I told them mine worked fine and did not have a pure sine-wave, they said o.k. and that it probably would not damage anything. TrippLite told me they had had NO reports of problems with the OmniVis1000 nor Omni1000LCD I am using.

A slight digression; keep in mind down the road a year or more that all UPS systems rely upon internal batteries. Due to the fact that there are always current fluctuations and your UPS will correct them, the batteries will wear out - even though they appear to be charged. This past year I had to replace the batteries in both UPS units to get them back to functioning properly.
Given your budget, I would probably go with the VIX, it certainly has enough power to run a modest to high end system for at least 5-7 minutes after power failure. Your original question was if your PSU would be compatible with the Oxxtron and I will say " probably". It would be worth a call or email to Trust to see if it has any sine-wave correction.

 

[efcfox1]

I found that Power Inspired has a 700W pure sine wave UPS (£90 on Amazon UK).
Power Inspired 1000VA Sinewave Battery Backup UPS System. It's in their VIS series: VIS1000B.
I think 700W to shut things down will be good enough, right?

 

[nostall]

Should work very well.

 

[sora]

I found that Power Inspired has a 700W pure sine wave UPS (£90 on Amazon UK).
Power Inspired 1000VA Sinewave Battery Backup UPS System. It's in their VIS series: VIS1000B.
I think 700W to shut things down will be good enough, right?

Yes, 700W is more than enough