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UPS for CoreOne L  

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G M
 G M
(@g-m-2)
Member
UPS for CoreOne L

I live in a city were I have to have a power backup. Any recommendation? 

Posted : 12/12/2025 2:19 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE:

Anything that has 1000VA or more should be good enough to withstand about 20min outages. 

You can buy some old but still very good APC SmartUPS units ( black ones),just may need to replace batteries.

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 12/12/2025 5:14 pm
G M
 G M
(@g-m-2)
Member
Topic starter answered:
RE: UPS for CoreOne L

I'm using a CyberPower 1350va.    Got the orange AC alert screen this morning. Had to reset machine. 

Posted : 12/12/2025 6:20 pm
hyiger
(@hyiger)
Noble Member
RE: UPS for CoreOne L

Have to be careful with the UPS. It needs to be instantaneous or it will trip the power panic logic in the printer. 

Posted : 12/12/2025 8:35 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE: UPS for CoreOne L

Some devices have an ability to adjust sensitivity and thus reduce transfer time. By default your UPS has 8ms transfer time, so maybe the Prusa PSU is super sensitive and needs lower switching times, probably something around 2-4ms

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 13/12/2025 8:19 am
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