Questions tagged [ups]

A UPS (uninterruptible power supply) is a device used to provide instant backup power to critical systems for safe shutdown in the case of a power outage.

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What would cause a fully powered off workstation to turn itself back on?

I have an old workstation that I want to keep fully powered off when I'm not around. Just recently I came home to find it powered on, even though I didn't touch it. There is no one else around (and ...
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prevent nut from constantly typing on command line (Debian)

I have been using Debian for a short time and when I login with my poor ssh user, there is a process that constantly writes to the console and makes me nervous. I get this warning message from nut: ...
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Modem recycles when power goes out although it's on a UPS

I have a UPS with my desktop, server, router and modem all on the backup side but when the power flickers, the fios modem still powers off. It is the only thing that powers off. Anyone know why or ...
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How bad are minor power fluctuations for computers?

Whenever a large appliance or power-tool is turned on where I live, such as a refrigerator, vacuum, chainsaw or similar, light-bulbs will often dim down for a fraction of a second before returning ...
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Synchronizing shutdown of several computers on one UPS

With a single computer working from a UPS, a power outage would result in the computer shutting down, followed by the UPS shutting down. The UPS would then not supply power to its outputs. With a USB ...
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Why is my Eaton UPS beeping?

I just received a new Eaton UPS (Eaton 3S 700). I plugged it to a wall socket and connected a small tower server, a switch and a router. They work fine. My problem: the UPS is beeping continuously and ...
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will nas lose connection to eaton 5e650iusb

I have a DS920+ and I recently bought Eaton 5E650iUSB. I connected it to my NAS and after 6 hours I got a notification from the DSM saying that the NAS has lost connection to the UPS. I investigated ...
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How to silence "bad battery" alarm in a APC Back-UPS 550 UPS?

I am using Ubuntu and I have an APC Back-UPS 550 uninterruptible power supply that's worked pretty well for several years. However, over the last year, it's "bad battery" alarm has routinely ...
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APC Back-UPS and Corsair PSU do not work well together

UPS: APC BX700U-GR PSU: Corsair RM550X Maximum power consumption of all devices connected to the UPS: 100-110W Average power consumption of all devices connected to the UPS: 60-70W It is not possible ...
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1200VA UPS Doesn't Supply Power to Monitor

I have a DELL Optiplex 7080 Tower PC running on windows 10 pro, and a Samsung SR35 Monitor. I had connected them into a 1200VA Offline UPS, but sometimes, when computer boots up (after the splash ...
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1200VA UPS Charging Time

I've bought a brand new 1200VA Offline UPS, but the problem is my UPS brand doesn't provide the information about charging time. So, I want to know how much time it takes to charge a 1200VA UPS? Also, ...
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Power usage in Task Manager says "very high"

I am running the next parts: SMPS 750W Ryzen 9 3900x RTX 3060 24 inches led monitor These parts are connected to 600 VA ups and wherever I run a software I see my power usage shoot up very high and ...
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How to know if the computer is getting enough power?

I have a UPS (650VA) and connected few devices including a laptop to it. I need to know is there a software or any tool or any way that I can know the devices are getting enough power? And also is ...
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Computer Restarts while on UPS

I am using a 650va ups (not a good brand) My previous pc had 400w psu and it worked fine. Now i am using a new pc (i5 10400f, gtx 1660ti oc, 550w 80bronze psu) Whenever the electricity goes off, trip ...
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UPS causes computer to restart when power is restored

Issue: When UPS switched back from battery to AC (power) the computer restarts. Even if computer is idle (less load) Scenario steps: UPS is plugged into wall only PC is plugged into the UPS Remove ...
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UPS and server at different Aperages

I have bought a DELL EMC PowerEdge R740 server which hosts: 2x Intel Xeon SKL-EP Gold 6130, 1x NVIDIA Tesla V100 32GB, 12x 8GB DDR4-2666MHz ECC RAM It has one main and one backup power supply each @ ...
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How to get UPS notifications in Windows 10?

When the UPS switches over to battery power (e.g., when the mains power cuts off or goes out of spec), I'd expect to (and like to) see a notification bubble (toast) in the notification area. Is there ...
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UPS doesn't provide power when it's plugged to the wall

i have a Maxma 1500VA UPS that i use for my pc, since yesterday, when i plug my UPS to the wall and try to turn on my pc, it doesn't work, but when i run my UPS on battery mode (unplug it from the ...
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UPS getting overload when PC is connected

I have a UPS with 600VA. When I connect it to my small laptop and a monitor, the total wattage amounting to 40W approximately (to the higher side), the ups on backup runs for 40-50 minutes. **But when ...
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Computer draws more watts when electricity in house isn't stable?

I have an i7 5960x (8-core, 16 threads) and two GTX 970s that are all running at full load 24/7. The total system power usage is typically around 450-550 watts when everything is under load. It has a ...
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Can I use higher capacity batteries in an Online UPS?

I have a Farber 1KVA Online UPS that uses a pair of 12v, 9AH batteries that are connected in series. the power goes off a lot in my area and the batteries can't keep my PC on more than a minute during ...
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Why can’t a 650w rated UPS can not power my 350w computer on main power failure

I have a computer that could potentially draw 350w on high load. Due to main failures often, I grabbed 1,000va (650w rated) UPS from Emerson. After fully charging the UPS battery, I have done self ...
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Can a power outage damage PC hardware?

TL;DR: can a planned "power outage" damage PC hardware aside from HDD/SSD (which won't be connected to the PCs) - mobo, gpu, cpu, psu, dvd, fans? (the internet says "yes it can" vs ...
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Can UPS be dangerous for my pc?

Can UPS be dangerous for my pc? I am using this power supply in my pc: SilentiumPC Supremo FM2 750W 80 Plus Gold I am using this UPS to power my pc and monitor: Green Cell UPS (2000VA/1400W, 3x IEC, ...
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HDMI blinks when UPS switchs voltage

I have an RX580 and two monitors; one connected to the HDMI output and the secondary to a DVI-D port through a DVI-D to HDMI adapter. The PC and the main monitor are connected to an UPS and the ...
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Pc reboots while connected to a UPS and no power failure

UPS model: TRV NEO 850 power factor is 0.6 220V transfer time is 2/4 ms i have the ups connected via usb and the monitoring software show no problems at all (battery ok, ups load no more than 70% ...
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UPS Voltage fluctuation from 240 to 220 Volt [closed]

Dear readers from this forum. I live in North East Thailand. I do have 4 UPS units from "Etech EGO" (1000 VA 500 Watt). I have 3 phase electricity which wil give me 240 to 250 Volt on ...
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Is it possible to purchase a UPS whose alarm can be disabled? Or must I physically disconnect the speaker by disassembling and modifying the unit? [closed]

I am working in a setting where we can expect to lose power several times a day and I want to get a UPS (uninterruptible power supply) in order to keep the computers running. Are there any ...
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UPS turns off at power loss

My brand new UPS doesn't power my computer at a power cut. I plugged it to the power socket and let it charge for a good amount of time. But it simply turns off. My PC has a 500W PSU and the UPS is ...
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Why is my UPS not providing power to my Modem?

I have a UPS that was powering my Monitor and CPU unit whenever main power was failing. I also have a modem that provides internet connection to the entire house. Now, the modem gets power from mains, ...
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UPS vs PSU wattage during normal operation?

Does a UPS battery backup act as a "funnel" for wattage during normal power operation (e.g. full power is coming from the wall outlet to the UPS)? I ask because I have an older UPS with only ...
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Can I use an USB hub to use the same UPS or printer for multiple computers?

I'd like to use the same UPS for two small computers. My main problem that I need the battery info for both computers to shut them down when the battery is close to empty. I thought maybe I connect an ...
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Computer Does Not Work At Home But Works in PC Repair Shop

I have never encountered this phenomenon. No, it's not phenomenon - it's anomaly that defies logic. My computer was left for 1 week in a mixed standby hibernate state. I think it's S4, don't remember. ...
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Infotec X4 on Ubuntu with NUT

I am trying to connect an Infotec X4 UPS to NUT on an Ubuntu server. The UPS is correctly recognized by ViewPower software on a Windows laptop. This allowed me to conclude that the USB interface works ...
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UPS any of the indicator lights not turning on

I have a prolink UPS pro700 model. I could not use it for around 4 to 5 months ( left alone unused ) and when I try to plug it in and turn it on, non of the indicator lights are illuminating. I know ...
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My UPS can't handle PC load sometimes, what's wrong?

So I recently built a PC and with it, I bought a cheapish 600W UPS. My PC on PCPartPicker showed that I required around 330W to use it properly (I went with a 700W PSU). I also have my monitor and ...
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I can feel the electricity on my pc case [duplicate]

I have a pc that is connected to a UPS and connected to the outlet. When I turn on the UPS while holding the pc case I can feel a small electric shock, also when the UPS is on charging mode I can feel ...
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UPS gives power without being switched on

I am using Intex Protector 275 UPS. When I connect it to power source, it automatically gives power to its output devices without switching on the UPS. This problem started today and I'm not able to ...
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Replaced batteries in CyberPower 1350AVR UPS, now it resets every 5 seconds

I have no idea what is causing this, and the CyberPower website doesn't even list this particular issue in their list of "all beep codes". All I did was take out the old batteries and replace them. ...
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Cyberpower UPS - huge drop in battery when switching to battery power

I just acquired a CyberPower OR1500LCDRM1U UPS device from eBay. It was said to be open box and not used, but I have my doubts. I have it installed, and am putting a 30% load on the battery. With the ...
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UPS on DC lines [closed]

How could a UPS switch between battery and AC wall socket fast from around 4 ms to 12 ms. What make it especial to switch in that very low time. As far as I know it has relays inside it to perform the ...
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GPU fails on because UPS

I got a new UPS not long ago, and installed it's software (upsilon 2000) and driver. the software installs a battery driver for the UPS so I can use windows power plans settings to control what ...
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APC UPS Replacement Battery

I have an APC BE550G UPS with a battery which is 4 years old (the model is RBC110) and I would like to replace it. I believe the current battery capacity is 7AH, and I was thinking of replacing it ...
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How comes all three protection levels (electric board, UPS and AC block) get passed through?

So, there is that house in France with three phase electrical power. I don't know if this is relevant. And I can't tell the whole installation was set properly. But the grounding is recent and strong. ...
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1 answer
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UPS power cord is giving electric shock only when computer is running using UPS back up power supply

I brought a new desktop along with an UPS. I plugged monitor power cord and CPU power cord both in UPS and UPS is not connected to any power supply. Then I have Started the UPS and my computer started ...
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Dell PowerEdge R710 reboots when UPS kicks in

I have a Dell PowerEdge R710 that I inherited from my company when it was retired. I have it protected with a CyberPower UPS, but every time there is a power failure, the server reboots. I have tried ...
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APC Smart UPS, Synology DS918+ and Mac mini

I have a new APC Smart-UPS C 1000, a 2018 Mac mini, and a Synology DS918+. I am trying to figure out if there is a way that when the battery gets low, the Mac and the Synology can both safely shut ...
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How to power on a computer after a power failure?

Background I have a Ubiquiti Network Video Recorder (NVR) connected to an Eaton 3S 550 UPS. The NVR is basically a tiny PC running Debian, which records video from network cameras on the LAN. My goal ...
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UPS makes a clicking sound and my Network Connection stops

My uninterruptible power supply (UPS) makes a clicking sound then my network connection stops, what can I do to fix this problem?
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Throubleshooting UPS

I recently rescued an MGE 2200 VA UPS. The UPS has the batteries dead (extremely dead), as it has only 0.5V out of 72V (6x12V). Obviously, it has been unplugged for a while. When I plug the UPS to ...
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