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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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, ...
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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 ...
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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-test.
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APC Smart-UPS X 1500VA Warning State: Connect Battery
I have an APC Smart-UPS X 1500V which I just connected to a power source. When I turned the device on it was beeping and giving a flashy red light at the most right icon of the control panel.
The ...
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APC UPS model:BR550ci-in How to Disable Minimum Load Turn Off
I got an APC UPS (Model No:BR550ci-in). I need to light a bulb(40w, 230volt) from it. The problem I am facing is Minimum Load Turn Off. My UPS auto-detects the load and if it doesn't meet the minimum ...
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Does the output waveform of a UPS make a difference to my PC Hardware?
I wanted to buy a UPS for my PC. I was going over some and I came across a variety of sine waves that different UPSes generate;
Stepped Sine Wave
Modified Sine Wave
Simulated Sine Wave
I know ...
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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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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 ...
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Adding another UPS battery in parallel, to increase runtime/VA capacity
Can one parallel two identical batteries and connect to the UPS, and will it act as a single battery of double the capacity? Or is there a problem electronically with it?
According to this answer, ...
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PowerChute Personal on Windows 7
APC UPS PowerChute Personal edition battery is not visible under the Configuaration> Power Options under Advanced Settings Balanced Power plan. The Battery Option should be visible to configure:
...
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What about placing a voltage regulator behind an UPS with modified sine output, to protect an active pfc psu?
I moved to an area/building where there are quite some problems with the wall-power supply.
Primaraly I would like to protect my computers, secondary I would like have some affordable UPS for some of ...
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What depth of discharge does 0% in a UPS correspond to?
When a UPS like an APC Smart-UPS shows 0% charge remaining, does it mean the deep-cycle batteries are completely discharged or that they're at 20%?
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Protecting Against Inrush Current
In my apartment, the main circuit breaker has a very low amperage limit of 5A (220V), with a maximum power limit of 1300W. Therefore, about 75% of the time I plug in my PC power plug, the inrush ...
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UPS switches to battery power when plugging in devices?
Over the past week or so I've had my UPS switch over to battery power briefly when plugging in new devices (possibly limited to just AC -> DC chargers, but haven't tested anything else). I had ...
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How can I get WinPower 3.2.0.2 to find my UPS on Linux
How can I get WinPower 3.2.0.2 to find my UPS on Linux?
I'm using Ubuntu 11.10
I have an Advice UPS
After install WinPower, it cannot detect the UPS which is connected with USB cable.
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