All Questions
Tagged with power-supply ups
28
questions with no upvoted or accepted answers
2
votes
1
answer
2k
views
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 ...
- 21
2
votes
1
answer
4k
views
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, ...
- 1,735
2
votes
0
answers
1k
views
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 ...
- 121
2
votes
0
answers
227
views
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%?
- 466
2
votes
0
answers
1k
views
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 ...
- 159
1
vote
0
answers
22
views
10-year old Sven Pro 1000 UPS turns off if load is low - batteries are good
I have a Sven Pro 1000 UPS which is 10 years old. However, it still works good after replacing its batteries twice. The only problem is that it automatically turns off if the load is very low - for ...
- 1,321
1
vote
0
answers
90
views
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 ...
- 11
1
vote
1
answer
111
views
UPS Sizing with large PSUs
I have a couple servers in my garage running ESXi. Each server has a 1000W gold rated PSU which I bought second hand from a miner. They work great and were pretty cheap. These are not super powerful ...
- 111
1
vote
0
answers
569
views
My computer restarts automatically when there is power outage and the monitor is turned on, using UPS power
I have a Zebronics Power UPS which backs up the system power at the time of power outage. I have no issues with that. But yesterday night I kept a movie to download and slept turning off just my ...
- 29
1
vote
0
answers
879
views
Agghhh! UPS Back-Up, Laptop Charger, Sparks
Boy… ok. This is so frustrating! Ok so, I've been getting a whole lot of problems with the electrical grid here lately: spikes, surges, lows, brown-outs, all kinds of problems, it's terrible, short-...
- 167
1
vote
0
answers
2k
views
Should The Plug of UPS Always Plugged?
Which is better for lifespan:
Switch off the UPS and plug off or
Switch off the UPS and leave it plugged in.
Consider this two statements and give seperate replies:
Which is better for >1 Month (...
- 31
1
vote
0
answers
1k
views
UPS shuts down when using with modem alone
I'm in a place where power cuts are very common for around 5 hours a day. I have a DSL internet connection and a PC. I recently purchased a new laptop which easily gives me 4 hours of battery backup.
...
- 11
0
votes
1
answer
251
views
How can I prevent apcupsd from managing the PC, and leave it to a custom script?
I bought myself a old APC Back-UPS CS650 uninterruptible power supply, and replaced the accumulator in it with a large lead-acid one, it coincides in voltage with the stock accumulator. I connected ...
- 1
0
votes
1
answer
32
views
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 ...
- 866
0
votes
0
answers
474
views
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 ...
- 103