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Question UPS question (battery backup)

luv2liv

luv2liv

Diamond Member
i have a bunch of equipment, total 14, consuming around 4500 watts.

what UPS should i buy to keep them up for at least 15 minutes during outages? preferably buying 3 separate UPS instead of 1 big UPS.
maybe a UPS capable of 2000w for 15 mins. and i buy 3 of them.
is sine important? only 6 of them are PCs.
 
luv2liv said:
i have a bunch of equipment, total 14, consuming around 4500 watts.

what UPS should i buy to keep them up for at least 15 minutes during outages? preferably buying 3 separate UPS instead of 1 big UPS.
maybe a UPS capable of 2000w for 15 mins. and i buy 3 of them.
is sine important? only 6 of them are PCs.
Click to expand...
Sine wave units are generally the better models, but it all comes down to the equipment connected to the UPS. When PFC power supplies first hit, they could shut down immediately if connected to anything other than sine wave units. But that's been a long time ago, so most power supplies should be fine running off of non sine wave UPS units.

That said, sine wave units provide power like the wall does, so I keep my computers on sine units. I use the standard non-sine wave units on things like my TV. There are a lot more detailed articles on it out there, but that's basically what is in a nut shell. https://blog.tripplite.com/pure-sine-wave-vs-modified-sine-wave-explained/

I've used CyberPower sine wave units for many years, but they recently changed their outlet plug to a standard straight plug, and I needed the kind that plug that goes at an angle, so I bought a APC sine unit when it was on sale for $147 (https://www.newegg.com/apc-br1350ms-4-x-nema-5-15r-6-x-nema-5-15r/p/N82E16842301699). It's a really nice unit and I would buy it again in the future.
 
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I'd break it up further then just three. They should be appropriately sized for the load. The 15 minutes is realistic but be sure to have plenty of headroom because the run-times are GREATLY over-inflated.

Example:
1. Gateway & Router = 650VA

2. Switch & File Server = 650VA

3. TV/Projector = 650VA

4. Monitor = 1500VA

5. Workstation = 2000VA

6. Switch2 & Laser Printer = 650VA
 
Laser printers don't like ups. Monitors don't draw that much power anymore. A 34" freesync is like 43W.

I have 2 Eaton 5KVA unit with 4 expansion modules :awe:
 
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