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.

Filter by
Sorted by
Tagged with
0
votes
1answer
29 views

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 ...
0
votes
1answer
24 views

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. ...
0
votes
0answers
19 views

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 ...
0
votes
0answers
15 views

Plugging 2-prong device to properly grounded UPS

I have purchased a 2-prong power adapter for my display to replace its broken adapter. The adapter is connected to a properly grounded UPS device (3-prong wall outlet and 3-prong cable). I was ...
0
votes
0answers
18 views

CyberPower UPS - How to change Time to Shutdown value after Power Failure Event and/or Cancel UPS Shutdown

I have an issue where my current UPS shuts down 10 minutes after a power failure event and I am unable to find a way to update this time frame or cancel the auto shutdown when power is restored. ...
0
votes
2answers
53 views

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 ...
0
votes
0answers
36 views

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 ...
-1
votes
1answer
43 views

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 ...
0
votes
2answers
48 views

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. ...
0
votes
0answers
11 views

Hot switch iMac and NAS power supply from UPS to standard, and vice versa

I have an UPS and its specialist suggested me to switch it off every day to let it powered down all the night. Since the person that completes the procedure can do that when some iMacs are still ON (...
1
vote
1answer
152 views

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 ...
1
vote
0answers
65 views

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 ...
0
votes
0answers
20 views

In apcupsd environment with 1 master and multiple slaves what decides which computer sends out the warning email on power outage?

For the sake of simplicity consider 2 computers A and B, both of which run apcupsd on linux, both of which have working mail sending. case 1: A was master in apcupsd.conf, ups physically connected ...
0
votes
0answers
23 views

How to avoid power race with NUT and Windows?

We have: a PC with Windows installed, this PC should be powered on 27/4 Eaton 1500 VA USB UPS, connected to the PC by USB NUT (Network UPS Tools) application to read and send data to the UPS When we ...
1
vote
1answer
273 views

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 ...
0
votes
0answers
323 views

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 ...
0
votes
0answers
40 views

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?
0
votes
0answers
27 views

Cannot do cat command on a UPS device file

I currently have a machine taking super long to boot up and shutdown, which give out the error "power failure" when doing these things, but the power is fine, i have looked around in the machine and ...
0
votes
1answer
45 views

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 ...
0
votes
1answer
23 views

How do I load test large UPSs?

I'm currently the only hardware repair person at my work and I've been left with a pile of UPSs that need to be fixed and tested. As it is I've been load testing the smaller (250-500 watt) units using ...
1
vote
2answers
1k views

How to shutdown macOS / mac OSX from Network UPS Tools client - NUT

I’m looking for help in shutting down my iMac on detecting a power failure while running from a UPS. My setup is an APC SMT750i UPS, powering two Synology NASs, and iMac plus the network kit (router, ...
1
vote
0answers
38 views

Why would my internet speed increase when connected through UPS?

The past few places I've lived over the years I've noticed a strange phenomenon: when I have my coaxial cable internet connection passing through the coaxial on my UPS and then into my modem, the ...
0
votes
1answer
41 views

UPS supply cuts power at POST if connected to server via USB

I am using an EATON 3S 550 on a Server that uses 60W when idle It is an Intel Celeron G3220 on a Intel DH87RL. Due to the six harddrives the power used at boot is higher, but certainly below 550W, ...
1
vote
1answer
42 views

What kind of UPS do I need? [closed]

I've been looking into different kinds of UPS solutions. (Standby, Line-Interactive, Standby-Ferro, Double Conversion, and Delta Conversion UPSs) So far I think I've narrowed it down to Double ...
0
votes
0answers
45 views

Determining UPS power rating to use for a SME data centre

I'm doing this the first time. I'm trying to understand what power rating of a UPS to use, the scenarios is that I will have 4 Dell PowerEdge R440 rack servers, each server has a Dual Hot Plug ...
10
votes
5answers
2k views

Should the UPS output be exactly same in normal and battery backup modes? Or it is normal to have a slight variation in voltage or something?

My 10 months old PC ran into a problem some days before. My system specs are as follows: Intel Core i7-8700 Processor MSI Z370-A PRO Motherboard 8GB RAM Here are the details about the issue. Most ...
2
votes
2answers
694 views

Trying to connect to Tripplite Smart1500LCD UPS with NUT on Raspberry Pi 3 B+ via USB. The device keeps disconnecting and reconnecting

I have 2 Tripplite Smart1500LCD UPSes and 2 Raspberry Pi 3 B+ boards running Raspbian GNU/Linux 9 with kernel 4.14.79-v7+. I am experiencing the same problem with both Pis with both UPSes. I am using ...
3
votes
0answers
498 views

Disabling repeating battery failure alarms on an APC Smart-UPS

I have an old APC SU700I with batteries which were failed on the self-test. Its manual says the following: THE REPLACE BATTERY/BATTERY DISCONNECTED LED IS ILLUMINATED Failure of a battery self-...
1
vote
0answers
81 views

UPSmart always gives “connection failure” when connecting to UPS through USB

I want to connect UPS (Irbis ISL1000ET) to OS (Ubuntu 18.04), so that when power is off and battery is low, OS shuts down automatically. However I cannot do this - I installed with superuser ...
0
votes
1answer
1k views

Cannot access Web UI for Eaton UPS Network-MS card on 172.x.x.x network

I have an Eaton 5PX1500RTN UPS with a Network-MS card installed and I could access the Web UI when I first set it up during initial testing on a 192.168.1.1/24 network. I made sure that I used DHCP ...
1
vote
0answers
222 views

UPS configuraton — master/slave

I recently bought a Eaton 5PX1500RTN UPS(1440VA/1440W) with a Network-MS card. I connected it via ethernet and can now see the Web UI for Eaton. This thread here gave me confidence that the UPS would ...
0
votes
2answers
68 views

I have a 450 UPS, will it be enough to let me safely power down my 600watt psu computer?

I don't need to use it, just turning it off if a power outage happens is enough for me.
0
votes
2answers
3k views

UPS turning on and off repeatedly

I'm using an Intex Protector UPS. When I push the power button it starts with a beep, which is normal, I know. But when the beep ends, the light which shows power turns off and button remains pressed. ...
1
vote
0answers
413 views

How to correctly install libusb-win32 for PCM RPT-800A UPS?

I have a PCM RPT-800A UPS, connected to a Windows 2012 machine. I would like to use NUT for communicating with the UPS.  But shortly after installing libusb-win32 for this UPS, the device in Device ...
-1
votes
1answer
55 views

How do I get an Oscillogram for this UPS? [closed]

https://www.cyberpowersystems.com/product/ups/cp1500pfclcd/ I want this unit but after reading this post When do I need a pure sine wave UPS? Im a bit nervous on spending this much when I don't ...
0
votes
0answers
2k views

How to disable power on/off beep on UPS (CyberPower CP1350PFC)

I've had a couple UPS in the past, but the beep on this UPS (CyberPower CP1350PFCLCD) is a little obnoxious and loud. The "mute notifications" button only stops it from beeping during a power outage, ...
0
votes
0answers
33 views

Repeated hardware failures

I got the following situation: In less than 2 weeks, three PCs of mine failed, 2 of which are industrial-grade workstations. All of them failed while awakening from standby (not hibernation), one ...
1
vote
2answers
64 views

Change UPS batteries capacity and quantities

Dears, Im no expert and need your advise if what I'm having in mind is possible or not. I own (MGE Pulsar Evo 3000) UPS that uses #6# batteries 12v / 7Amp the UPS is powerful for sure but the backup ...
19
votes
5answers
5k views

How does the capacity (kVA) of a UPS affect my power consumption?

I asked my dealer for a 3 kVA UPS for my PC-class computer with a 12V * 8 * 42 Ah battery bank. However, he provided me with a 6 kVA UPS with the same battery bank. He claimed no extra money for the ...
1
vote
2answers
14k views

Is it ok to turn off and unplug my ups at night?

Hello I have a line interactive UPS that my computer and tv are plugged into, at night I have this habit of turning off and unplugging ( from the wall outlet) all electric devices that I don't use. Is ...
0
votes
2answers
830 views

What should I plug in first, my voltage regulator or UPS and why? [closed]

My UPS has the following specs: INVO brand Model : 1500VA Input :220Va,c50/60hz output:220Va,c50/60hz Capacity:1500VA,900W My AVR has the following specs: KEBO brand HDR-2000VA Input :14-260 ...
0
votes
1answer
571 views

APCUPSD: Cannot find UPS on ANY serial port

I have APCUPSD installed on a computer with 2 physical serial ports. The UPS is an APC SUA1000 with a serial port. I have the APC smart serial cable connected to COM1, and COM2 going to another ...
2
votes
1answer
326 views

Windows 10: Turn on UPS beeping

[Windows 10 Pro x64, v 1709, APC Back-UPS 550] I am using the OS-native battery control for power management. I seem to be having the opposite problem of everyone else on the interwebs: my UPS did ...
81
votes
2answers
14k views

Identify an Unusual USB Port

The back of our APC Smart-UPS 2000 has a USB port so that it can be monitored from a server it supplies. However, this USB port doesn't appear to be a standard USB connector. It looks a little like ...
0
votes
1answer
2k views

How to communicate with ups with a serial port?

I have this offbrand chinese ups that I want to plug in my computer, the manual state that it has a "COM port" but nothing else about it, it doesn't provide a driver neither. Plugging the UPS with a ...
0
votes
1answer
1k views

How can I prevent Windows from applying updates when shutting down when low UPS charge is left?

My PC is connected to power supply via UPS. It can provide emergency supply for about 5 minutes. This could be not enough to install updates when I push 'Power' button on my PC. So, my question is: is ...
0
votes
1answer
98 views

Can I use a 900W UPS with 1100W system if I need to cover blips only?

I may get unstable voltage or lose power for less than 2 seconds in winter season. I have a system that consumes 1000-1100W. Is it enough to get a 900W UPS for that purpose? I don't care if system ...
1
vote
0answers
257 views

APC SmartUPS - possible to control outlet group from command line?

My home (Debian) server has an APC SmartUPS 1500 LCD (model SMT1500I) attached via USB. Monitoring and automatic shutdown works perfectly through apcupsd. Since I have a lot of spare headroom on the ...
1
vote
1answer
230 views

UPS to keep router running for 8 hours at a time

We have a modem / router combination on a building site. The router keeps going down because the power keeps getting turned off for electrical work. Is there a type of high capacity UPS that could ...
2
votes
1answer
1k views

can i charge UPS's external batteries using external charger ? while UPS is ON 24x7?

What are the cons of using an external battery charger for charging my UPS's external batteries while the UPS is on? I have an inverter/UPS with external battery. I am tired of constant PC reboots ...

1
2 3 4 5 6