Dunno if this topic has been discussed before, but here it goes
I am thinking of getting a APC 650VA UPS for my new rig, so first off would like to kno whether it has the following :
LAN/Phone line protector
USB connector for connecting to PC (no Serial Ports) for switching off the PC when light goes bye bye
Now the next question :
Anything better then the APC 650VA for around the same range (3k)
**And the last :
**Dunno how much voltage fluctuations are in Bangalore, but if its anything like what happens during summers over here in my locality, then is it **wise/useful **to plug in a stabilizer just before the UPS.
That is power from the outlet goes into the stabilizer which then provides juice to the UPS, or is it redundant.
Also suggest some good brand name stabilizer capable of providing around 500-600W (a 1KW stabilizer would be ideal I guess) and their approx prices.
most mainstream stabilizers cutoff voltages are the same as that of UPS’s . My Vguard UPS and stabilizer both cutoff at about 180/260V
so if Very low voltages are the problem, i doubt if that will help, I instead, use a local made 500VA Manual step up transformer ( in which I do the voltage adjustments myself )
Its the only option when your voltages are more like 100~130 V
Hmm, correct me if I am wrong here, but the function of a stabilizer is to up or downconvert voltage to near abouts 220V by taking in from the Current (a very rude term for what actually happens but cant think of anything better right now)
So if the voltages are within a standard range of 180-260, the stabilizer will correct it to 220V
The next part is the one I am fuzzy about, dunno if I am technically correct here…
The UPS on the other hand, doesnt correct the Voltage but instead if it drops below say 200, cuts off the main supply and provides juice from the batteries, which is what I want to prevent.
Most modern day UPS come equipped with AVR (Automatic Voltage Regulator). The APC 650VA UPS has an input range of 180~260V. Any fluctuation in that range, the UPS will regulate it to 220V. So, no need for a stabilizer.
it has a rotary switch like our old fan regulators. turn it until the meter shows 220
in ordinary stabilizers ,this is done automatically, only that ordinary stabilizers go down only till about 170V input. this one , on the other hand can run way lower… i’ve gone till the last but one setting, and that was when line voltage was 100V
no idea what to do when you get more than 230 V input consistently …I’ve yet to see the day
Ahh, so when the voltage drops, one has to manually increase the voltage o/p to 220V, got it
Back to the UPS, if say the voltage drops below 180, UPS switches to battery, then I have the option to turn off the PC right?
And when the voltage is back to normal / the gods of elecricity return after a power failure, is there any option/method which would allow me to reboot my PC without me being present there?
to the 2nd question , depends on the ups , but usually , no, cos you can set the pc to reboot on power coming back by stting it in bios, but to make the UPS start when power returns… that’s the issue
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