My PC is shutting down during a power outage even though it's connected to a UPS ?
My PC is shutting down during a power outage even though it's connected to a UPS ?
I'm just doing the simple option and replacing my UPS with my wife's as she uses it for work and her 3080 to watch YouTube videos. I value your help, and I plan to upgrade to a rack system with several UPS units later. I'm experiencing power fluctuations 4-5 times daily that are enough to shut everything down completely. It's really frustrating losing about three hours of firmware development time.
If you can safely stop your 3D printers during a power outage without interrupting the print job, can you resume where you left off once the electricity returns? Or are you forced to restart from the beginning?
When the UPS fails, does your PC experience a delay before it stops functioning? This could mean you need to restart. If your UPS switches over, is there any advantage in running them on a UPS instead of relying solely on the mains?
If your ATX power supply unit has a weak 400V bulk capacitor, the specifications state that it should last at least 17 milliseconds during an outage. A low-quality PSU might fail before the UPS activates.
For best results, use an "always online" UPS with pure sine wave output. There’s no transition delay when the mains goes down, so your PC will keep running until the battery is depleted.
A UPS may show a full battery level, but it can take several seconds to switch over. This delay suggests the batteries are nearing their end and should be replaced soon.
UPS ratings are given in VA (higher values) and Watts (lower values). It’s important to check the Power Factor of connected devices to ensure you’re not exceeding the UPS’s capacity.
Large industrial UPS systems use multiple battery banks, each powerful enough to start a truck engine. Entire rooms may be dedicated to powering one UPS. These units can supply hundreds of kilowatts for ten minutes or more until a diesel generator kicks in.
Home and office UPS units typically last only a few minutes at full capacity with good batteries, which might not allow enough time to safely stop multiple devices. More advanced models include USB or Ethernet outputs, enabling automatic shutdown without human intervention.
No, you can't shut down smoothly and most printers have a resume feature when power goes out. Most of my printers use Klipper, but not all of them do. I rarely experience long power interruptions; instead, I usually face frequent brownouts with brief 2-3 second drops in electricity. I observed that if I turn on my PC without logging in and unplugging the ups, it stays running. Once I log in and apply a load, it stops working.