0
votes
2answers
72 views

UPS will work on power but not battery

I have an old APC Back-UPS 200 I'm hoping to use for my PC. Connected to power it works fine. When unplugged it emits a "i'm on battery power" constantant tone. The 2 plugs on the back are not ...
2
votes
2answers
67 views

Is daisy chaining UPSs safe? Does it add any benefit or cause more problems?

Is it safe and is their any benefit to daisy chaining multiple UPSs together?
1
vote
0answers
66 views

When unplugged, the UPS plug gives out current. Is it bad? [closed]

We have several power issues in our house like : Occasionally loosing bulbs (in two holders, the light bulbs went out two times. If we put a new one, it will go out after several days. One went out ...
1
vote
0answers
71 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 ...
5
votes
3answers
976 views

Is my UPS battery dead or is my UPS broken?

When the lights went out today I noticed my UPS battery didn't work. I checked the monitor and this is what I see: As you can see it says the battery has 90% but when I pull the plug, it doesn't ...
0
votes
0answers
243 views

Why is my UPS causing my monitor to make a high pitched humming noise

I recently purchased a UPS for a new server build for my home. Since the server sits next to my desk, I figured I'd plug my Macbook and monitor into the UPS as well. That way if the power goes out, I ...
0
votes
0answers
234 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. ...
0
votes
0answers
256 views

PC crashes with Power LED Blinking at 1 Second Interval

I have a "server" that recently has started crashing around once a week. I have yet to find a reason for the crashing but the nonrecoverable nature of the crash is unusual. The machine is standard ...
1
vote
0answers
169 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 ...
0
votes
1answer
131 views

Unknown UPS back-up issues

I have a Powercom UPS IND606A. I am staying in India having voltage range of 230. The detail explanation of problem :* When there is a powercut UPS gives back-up but it restarts the computer. ...
0
votes
2answers
489 views

Computer restarts on power failure with UPS

I am having power cut problems in my country. I am using an uninterrupted power supply with these specs waveform: modified sine wave typical 15-20ms, 30ms max My computer restarts when power goes ...
4
votes
2answers
170 views

Do uninterruptible power supply increase the life expentency of hardware?

Do UPS increase the performance or life expectancy of the hardware connected to it? What if the UPS has a built in line conditioner?
2
votes
2answers
725 views

How to find a UPS for my computer? [duplicate]

Possible Duplicate: If my power supply is 700w, do I need a 700w UPS? I have a desktop that I built with a 750 Watt power supply. I'm looking to get a UPS for it and wondering if I need to ...
3
votes
3answers
447 views

Is it safe to tilt a UPS battery while in use?

I've got an old UPS for which I bought a new battery. The new battery is different in size (longer). Thus it doesn't fit in the structure. However, if I keep the new battery vertically, I can manage ...
0
votes
1answer
303 views

Is the APC BR700G UPS (or similar) compatible with Active PFC power supplies?

I'm looking at getting a UPS for my home computer. So far the APC BR700G looks very promising, except for one thing: one of the reviews on Newegg says that this UPS does not work with a power supply ...
1
vote
2answers
396 views

UPS for hard drive protection

I am in a place where electricity is not ideal (old house, no ground), sometimes it occasionally shuts down and supposedly there are some spikes. I consider using UPS with the goal to increase ...
2
votes
3answers
191 views

What is the correct way to check the efficiency of an UPS?

I have a UPS made by Israeli company - Advice. I read somewhere that every few months, UPS should be checked for operability by disconnecting it from the mains, then plugging mid and high powered ...
8
votes
10answers
2k views

Can a UPS be too powerful?

Our old network admin bought the top range UPS a few months ago but never came around to setting it up and is no longer with the company. Now the old UPS broke down and needs to be replaced, but an ...
1
vote
4answers
1k views

Internal 5.25" DC UPS [closed]

I think we need the following internal UPS product: Can be fit to 5.25 drive bay (like optical drive). You connect PSU to this UPS with standard 24 PIN PC Main connector + other connectors for ...
1
vote
1answer
248 views

Is My PSU compatible with this UPS

I have this PSU and this UPS, however due to the PSU being/having an active PFC (power factor correction) it is incompatible with my UPS (at least according to APC tech support, for reference see my ...
3
votes
3answers
2k views

Computer hangs due to underpowered UPS?

I just bought a new UPS. Now since I started using it I experienced at least 3 random freeze in Windows 7 and it happens during the first 10 minutes of start-up. Note when I say freeze, I mean I ...
3
votes
4answers
9k views

Does a UPS charge it's battery even if my computer is turned on?

I bought a new UPS and the manual says something like "the UPS must charge for 24 hours before it can work properly..." My question is, does it charge even if my computer is turned-on or should I ...
3
votes
2answers
3k views

Do I need to turn off my UPS when I power off my PC?

Do I need to turn off my UPS when I power off my PC? Or, put differently, is it okay for the UPS to be turned on all the time?
4
votes
2answers
688 views

Will a 300W UPS work fine if my PSU is 500W?

I am getting a UPS (Uninterrupted Power Supply), currently here are my options: http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=BE500R-PH ...
3
votes
1answer
320 views

To place a Kill A Watt meter between the PSU and UPS or between the UPS and Wall Outlet?

Are you supposed to place a Kill A Watt meter between the PSU and UPS like so: PSU--Kill A Watt--UPS--Wall Outlet? or are you supposed to place a Kill A Watt meter after the UPS like so: ...
0
votes
1answer
582 views

Is this UPS strong enough? [closed]

I have a pretty power hungry rig, enough that I threw an 850w PSU in there. I've played around with a few wattage estimation/calculator sites and they've all suggested I would need at least 650-750w ...
6
votes
2answers
759 views

Is it okay to use a UPS without a ground?

I have a UPS unit that I would like to use for a workstation installation that does not have a valid ground (in the Philippines, a true ground is a luxury). I am not an Electrical Engineer, but I ...
4
votes
2answers
1k views

Internal UPS for desktop computers? [closed]

I was wondering, are there internal UPS'es available for desktop computers? Every laptop has something like a UPS in it: The battery pack. Desktop computers don't consume that much power, it should ...
1
vote
1answer
268 views

Low capacity on UPS model Hantol HU1000 for PC

How should one care about UPS (do maintenance of UPS) for a home computer? I am asking because after one case where UPS was discharged fully (till it was empty), it now does not hold the power: it ...
1
vote
1answer
427 views

attach C14 male power 3-pin connector to 2-wire cord

I need to attach a C14 male connector to my 2-wire cord to get power from my UPS. should I ignore the middle pin on C14 and attach my 2 wires of my cord to left and right pins?
8
votes
5answers
4k views

Is UPS necessary to have for a PC?

Can my computer components ( Monitor, Motherboard, RAM, HDD, CPU, SMPS) become damaged due to a sudden power flux. It's only needed to shut down Windows properly. Can I solve both Hardware and ...
2
votes
4answers
2k views

Does a cable internet connection remain active during a loss of power in the apartment building?

I live in an apartment building in Czech Republic, Europe. I have a cable internet connection with a static IP connected to an Ubuntu server I set up. Recently out building lost power, though the ...
7
votes
5answers
13k views

If my power supply is 700w, do I need a 700w UPS?

if my power supply is 700w, do I need a 700w UPS? I am running dual 20" dell LCD's, a i7 quad core system with a radion 4870 1gb video card, 2 hard drives.
1
vote
3answers
468 views

Boot issues after thunder storm

The village where I live was sat under a thunder cloud for most of Friday, and we suffered a few power fluctuations (specifically, what seemed to be split-second outages). When I got back home from ...
15
votes
4answers
5k views

Can I run a computer using DC power?

I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...