system restarts on voltage fluctuation

From last few months..I am facing this problem.Sometimes my system restarts on sudden voltage fluctuation.I have not added any new hardware ..and my UPS is around 3 year old.

Also I am using stablizer..because sometime I face low voltage.
My system confrigation:
P4 2.8
512 RAM
Two SATA hard disk--80+160 GB

Please help me.....
thanks in advance

Strange... !!! Ravi asking this question... !!! Account hacked ??

:lol:

sorry for that poor joke...

Anyway, brother i am sure u too have pin pointed that its possible that UPS is not able to do its job... !!! I would suggest is possible then try to alter the UPS with a new one from a frnd before u think of changing it...

Check SMPS and USP battery. Also check how much backup time you are getting from the UPS. I had a local USP with me which had the same problem. Battery was the cuplrit. Now I switched to APC and now problem till now

use a stabilizer yes this the problem of voltage

Choto Cheeta said:
Strange... !!! Ravi asking this question... !!! Account hacked ??

sorry for that poor joke...

Anyway, brother i am sure u too have pin pointed that its possible that UPS is not able to do its job... !!! I would suggest is possible then try to alter the UPS with a new one from a frnd before u think of changing it...

No dear..I am not that brilliant. Actually I was thinking..this is a UPS probelm.But thought to take suggestion from my dear friends here on forum...before I make any decision.

Ok..I will try another UPS tomorrow.

Charan said:
Check SMPS and USP battery. Also check how much backup time you are getting from the UPS. I had a local USP with me which had the same problem. Battery was the cuplrit. Now I switched to APC and now problem till now

Mine UPS is very old..and give max. 10 min backup.

NIGHTMARE said:
use a stabilizer yes this the problem of voltage

can stabilizer be a problem??

Ravi, every UPS comes with a Basic onboard Voltage stabilizer...

unless you are haiving low voltage for all the time, there is no need for a expernal Stabilizer...

APC 500 VA is Rs. 2100/- + TAX, try and buy that to replace ur 3 yrl old one

this should solve the issue... but as I said, before investing, you may bring a frnds UPS to test

Ravi , have you got manual stablizer or an automatic one. Most probably weak battery is a cause.
Me currently facing same problem , but my UPS is in last month of two year warrenty. To check the UPS I carried it to a friends home. The results will come tommorow. When last month I carried it to service center they said it to be okay. But still I faced same problem at home.

@ choto
When I bought my UPS two year ago it used to give me 45 min backup. In due course I added a 512 MB Ram. Now I hardly get 10 min backup. Since its a gk that battery in due course will weaken but since ups is in warranty period can I demand to get same backup.

Choto Cheeta said:
Ravi, every UPS comes with a Basic onboard Voltage stabilizer... unless you are haiving low voltage for all the time, there is no need for a expernal Stabilizer...

APC 500 VA is Rs. 2100/- + TAX, try and buy that to replace ur 3 yrl old one

this should solve the issue... but as I said, before investing, you may bring a frnds UPS to test

can I replace only battery of UPS.I have microtec double battery UPS.

int86 said:
Ravi , have you got manual stablizer or an automatic one. Most probably weak battery is a cause.
Me currently facing same problem , but my UPS is in last month of two year warrenty. To check the UPS I carried it to a friends home. The results will come tommorow. When last month I carried it to service center they said it to be okay. But still I faced same problem at home.

I have automatic stabilizer...I want to see ur UPS result tomm.

@Ravi,
An automatic stablizer is of no use for UPS.
Hey I have got the same UPS. Fluctuation problem can be removed by unplugging a plug just behind the front switch. Its was done in mine UPS by serviceman. Its very easy, you can try urself.

@ choto
When I bought my UPS two year ago it used to give me 45 min backup. In due course I added a 512 MB Ram. Now I hardly get 10 min backup. Since its a gk that battery in due course will weaken but since ups is in warranty period can I demand to get same backup.

well the type of Batteries APC / Microteck / other brand uses, if u buy branded like Exide would Cost you around Rs. 600/- MAX... if the UPS is good in other area, just the BACK up is low, yeah its worth to change the bettery... even officially APC them self request you in every 1 year to replace the Battery...

I think I must change my battery atleast. So, what brand should I choose???
As I said I have microtec double battery UPS.

Hey, my UPS is runing fine at my friends home giving 15-20 min backup. Rather than some external problem its inside my PC or moniter. Am I guessing right. Is it possible to measure watteg of a device.

int86 said:
Hey, my UPS is runing fine at my friends home giving 15-20 min backup. Rather than some external problem its inside my PC or moniter. Am I guessing right. Is it possible to measure watteg of a device.

wattage of all deviceis mentioned on itspackor in it manual...........

Is ur friends system of same confrigation.

My friend has 128 RAM instead of mine 512. Is the psu is culprit.
Ravi u will have to get two batteries.

Please use UPS only. i've been told that using BOTH stabilizer and UPS is not good. Try borrowing a new UPS and checking

int86 said:
My friend has 128 RAM instead of mine 512. Is the psu is culprit.
Ravi u will have to get two batteries.

yaa..I will hve to replace 2 battery...today is sunday.So, most probably I will change tommorow.

get 1 kilowatt Automatic stabilizer that will do suffice

I gone through whole of this discussion. Now I will say my experience regarging UPS. In Our area Power supply during pick hour is around 140 to 160 Volts. My UPS is orion 500VA double battery. During the pick hour I cannot operate my system, if I start the system my UPS goes frequently in ups mode. Then I test a 1 KW Automatic stabilizer which actually used in Refigerator. With that stabilizer my UPS problem is solved. I think Normal home UPS are not capable to stabalize/increase the volt to 220/230 volt when the input power supply below 180 Volt.

@ravi
have you got the batteries. Give inputs.

Hey..I think my problem is solved now.
I have replaced both batteries of my UPS.And it is working fine now.

Thanks friends for ur suggestion and help.

hey guys,even i've a ups related prob which is somewhat similar.
i've a 3yr old APC 500VA Backup EPS UPS.for the past 2 weeks,whenever there is a pwr cut,m y system reboots.so its evident that my ups is at fault.
so i got my battery checked at a local EXDE center and they said that the battery is ok.
so is it a good idea to reapair the uos or sud i change it.
if i do wanna change what ups sud i look for my config(plz see sig)??

thnx

@ravi
what costed you batteries.

assasin said:
hey guys,even i've a ups related prob which is somewhat similar.
i've a 3yr old APC 500VA Backup EPS UPS.for the past 2 weeks,whenever there is a pwr cut,m y system reboots.so its evident that my ups is at fault.
so i got my battery checked at a local EXDE center and they said that the battery is ok.
so is it a good idea to reapair the uos or sud i change it.
if i do wanna change what ups sud i look for my config(plz see sig)??

thnx

Have you changed your ups battery during this 3 yrs, If not change the battery it will run as new ups.
When u check a old battery which is in running condition. It will show above 12V, But When you put load on the ups after a few minutes it will show the voltage below 8 or 9 volt. Again u relax the ups from load and keep it for few hours and the the battery with volt metre it will again show you 12v.
Plsease note I am not battery expert. It is my experience I explain here.

int86 said:
@ravi
what costed you batteries.

two battery for Rs. 1200/-
And I sold both old battery for Rs. 100/-..so total cost me Rs. 1100/-