Voltage fluctuations

It’s worse than blackouts. When there is no power you know you have to live with it. But when there is power and still you are unable to work your appliances then it becomes super frustrating. You feel like screaming and pulling your hair. It gets so bad even ceiling fans refuse to work.

So is there any solution? Does UPS guarantee stable voltage? Can I run an entire house on UPS, including ACs? I don’t care how much uptime it gives. I just want stable voltage as long as there is power.

10 Comments so far

  1. Wahidi (unregistered) on October 3rd, 2006 @ 2:36 am

    UPS does it all for u!…..it costs somewhere around rs.16000……it gives u one years warranty……and they mean it when they say so…..itll work fine for a year….but itll break down the day ure warranty endss…..but i personally think its gud investment neways…..go for it!


  2. Kashif (unregistered) on October 3rd, 2006 @ 10:15 am

    I have got UPS back in May. It was of 12K at that time with installation and is enough to support 2 fans + 2 lights for 8-10 hours. It came with 1 year warranty but Alhamdulillah no issue as yet.


  3. umar (unregistered) on October 3rd, 2006 @ 10:19 am

    kashif, were you facing fluctuation issues before you got UPS? Did things get better after getting a UPS installed?


  4. Farhan (unregistered) on October 3rd, 2006 @ 11:43 am

    Use stabilizer , they work until the voltage is too low for them to maintain . for lighting I use energy savers at 15 W or less so even at the lowest of voltage , they work


  5. Munir (unregistered) on October 3rd, 2006 @ 12:03 pm

    UPS or AC-DC Power Inverter are used in the case of power failures, whereas Voltage fluctuations need Automatic Voltage Regulator/Stabilizer to solve your problem.


  6. umar (unregistered) on October 3rd, 2006 @ 12:04 pm

    farhan, stabilizers don’t work when voltage gets too low, and thats usually the case in my area. I also use energy savers for lighting and they work fine. I am more worried about high power appliances like refrigerators and air conditioners.


  7. Kashif (unregistered) on October 3rd, 2006 @ 12:34 pm

    @Umar: Actually the UPS is wired to couple of rooms which we used most of the times. So whenever volatages are too low we shut KESC meter switch down and get full voltages on the UPS.


  8. Jamal Shamsi (unregistered) on October 3rd, 2006 @ 1:34 pm

    Calculate the load. ( number of items and their power consumption required) and buy a UPS. It will help you over come the voltage fluctuation problem.

    Since 10 years, we are using energy savers and there is no problems when there is voltage spikes

    Aircon & Fridges & Deep freezers shall be hooked up to seperate voltage stabilisers to protect a burn out. an average stabiliser cost 800 ~ 1100 and works well on the fridge/ deep freezer. rs. 6000 ~ 8000 are needed to buy a quality stabliser for aircon.


  9. Salman Ahmed (unregistered) on October 4th, 2006 @ 12:06 am

    ACs need circuit breakers , the good ones cost around 300-500 rs


  10. Citizen (unregistered) on October 4th, 2006 @ 3:46 pm

    An UPS of 1000 VA (an unit of electricity) can power 4 tube lights and 4 fans for 4 hours if used with a 145 ah battery. If you switch off some fans and lights you can also use your computer or tv, one at a time.

    But if you use it less like 1 fan and 1 light it can give you more than twice the time (about 8-9 hours)

    remember that 1000 VA is not 1000 W. 500 W is the maximum that a 1000 VA UPS can generate.. it cost around 12500.

    No you cannot run you AC’s because they consume no less than 1500 W for a 1 ton unit.. when you get the UPS installed always make sure that AC’s are not on the UPS lines otherwise imagine the load.

    I have a 1000VA UPS with 145 ah battery.



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