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Author Topic: Power Factor Computation  (Read 6388 times)

Offline ahlburuto

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Power Factor Computation
« on: May 12, 2008, 05:02:31 PM »
Pano ku ba makukuha ang power factor ng aking ref? Anung data ang kelangan ko at anung mga tool/equipment gagamitin ko?


BR
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Power Factor Computation
« on: May 12, 2008, 05:02:31 PM »

Offline ahlburuto

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Re: Power Factor Computation
« Reply #1 on: May 12, 2008, 05:14:07 PM »
 ??? ??? ???
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Re: Power Factor Computation
« Reply #1 on: May 12, 2008, 05:14:07 PM »

Offline 'yus

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Re: Power Factor Computation
« Reply #2 on: May 12, 2008, 05:23:56 PM »
.. anung mga tool/equipment gagamitin ko?
gamit ka ng power analyzer (example brands; voltech and hioki)..
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Re: Power Factor Computation
« Reply #2 on: May 12, 2008, 05:23:56 PM »

Offline ahlburuto

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Re: Power Factor Computation
« Reply #3 on: May 12, 2008, 05:28:59 PM »
nakow eh ala ata aku nun
meron lang ako eh clamp meter, multimeter eh

wala bang ibang option?

BR
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Re: Power Factor Computation
« Reply #3 on: May 12, 2008, 05:28:59 PM »

Offline 'yus

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Re: Power Factor Computation
« Reply #4 on: May 12, 2008, 05:33:41 PM »
wala bang ibang option?
hmm.. pwede rin ang oscilloscope, kelangan mo lang ng differential probe saka current probe
(mas mahal ito and hindi practical na gawin)..

hindi pwede yung hiwalay na meter eh (clamp meter saka voltmeter)..
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Re: Power Factor Computation
« Reply #4 on: May 12, 2008, 05:33:41 PM »

Offline ahlburuto

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Re: Power Factor Computation
« Reply #5 on: May 12, 2008, 05:36:44 PM »
so ibig sabihin eh wala akong ibang option kundi yung dalawa na yun.... no chanc at all pala para malaman ko ang power factor nito.... uhuhuhuuhu.

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Offline 'yus

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Re: Power Factor Computation
« Reply #6 on: May 12, 2008, 05:39:40 PM »
so ibig sabihin eh wala akong ibang option kundi yung dalawa na yun..
meron pa naman sigurong iba..
teka, bat mo ba gustong malaman ang power factor ng ref mo?!  ??? ??? ???
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Offline ahlburuto

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Re: Power Factor Computation
« Reply #7 on: May 12, 2008, 06:03:10 PM »
mataas na kasi kuryente ngayon eh. pati yung washing machine eh icorrect ko din sana. at di pa ko nakaranas gumawa ng ganito eh.

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Offline 'yus

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Re: Power Factor Computation
« Reply #8 on: May 12, 2008, 11:06:37 PM »
hmm.. hindi ka naman ata nakakatipid nyan kung iko-correct mo lang ang power factor..
almost same power consumption pa rin ang kakalabasan nyan..  ::)
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Offline rdpzycho

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Re: Power Factor Computation
« Reply #9 on: May 12, 2008, 11:11:27 PM »
makakatipid lang sa power factor correction kapag malaki losses sa wire. bababa kasi ang current kapag nag-correct ng PF.

naaalala ko merong way, pero 2 power meter ata ang kailangan. naalala ko lang yung experiment namin sa EE lab, na makukuha yung power factor by getting, apparent and real power. nakalimutan ko na paano gawin. hehehe.

ang maganda sa power analyzer, kita mo rin yung mga harmonics pati waveforms. hehehe.
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Offline ahlburuto

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Re: Power Factor Computation
« Reply #10 on: May 13, 2008, 06:33:28 AM »
mukhang mahal yung power analyzer na yun ah. 

@julznc

i rin pala ako makatipid nun... ??? ??? ???


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Offline 'yus

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Re: Power Factor Computation
« Reply #11 on: May 13, 2008, 08:26:01 AM »
ito po ang sabi ni tito:
Wala naman talagang power saving device kundi ikaw mismo ang magcontrol ng consumption mo. Yung power factor correction mo has ABSOLUTELY NO ADVANTAGE on your part. Actually , if you correct your pf, ang makikinabang ay ang utility company hindi ikaw.  Bakit? .....
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Offline ahlburuto

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Re: Power Factor Computation
« Reply #12 on: June 02, 2008, 08:19:08 AM »
ito po ang sabi ni tito:

tama yung sinabi ng tito mo.

ang maganda kasi kung macorrect mo yung pF eh bababa yung amperes ng kinakain ng device mo. pag bumaba yun eh bababa din yung dissipated heat sa mga embeded cables mo. In that way maiiwasan mo yung mga overheating ng mga cables... Ok lang sana kung ang cable eh outdoor, yung nakahang sa labas lang at walang tubing na nilagyan, mas mataas ang withstand ampere nun kumpara sa embeded cables...

kaya kung at least macorrect mu pa kahit konti yung power factor eh yun ang gusto ko sanang mangyari... more safe di ba.  ;D

br
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Offline rdpzycho

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Re: Power Factor Computation
« Reply #13 on: June 02, 2008, 01:29:50 PM »
tama. ;)

minsan may savings dahil may mga loose connection na nakakaaksay ng power dahil sa taas ng current. yung Aircon dati sa kwarto namin nahihirapan umandar dahil bumababa voltage kapag kumuha ng kuryente. nung linagyan ng capacitor mas madali na. pero yun lang ang main cause talaga may problem na sa kuntador. ;D
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
- Rene Descartes

"For every difficult problem there is always a simple answer and most of them are wrong."
- Clayton Paul

Offline ahlburuto

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Re: Power Factor Computation
« Reply #14 on: June 02, 2008, 08:13:57 PM »
tama. ;)

minsan may savings dahil may mga loose connection na nakakaaksay ng power dahil sa taas ng current. yung Aircon dati sa kwarto namin nahihirapan umandar dahil bumababa voltage kapag kumuha ng kuryente. nung linagyan ng capacitor mas madali na. pero yun lang ang main cause talaga may problem na sa kuntador. ;D

nangyari na rin yan sa house nung friend ko, sa aircon din. eh naging cause naman eh maliit na size ng conductor na ginamit. kaya ayun pinalitan ko... wala sigurong experience yung nagkabit... ;D ;D ;D
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Offline rdpzycho

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Re: Power Factor Computation
« Reply #15 on: June 02, 2008, 08:16:20 PM »
malakas kasi talaga humugot ng kuryente yung aircon kapag nagpapalit ng speed yung motor. ;D
‎"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
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Offline delfz

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Re: Power Factor Computation
« Reply #16 on: September 27, 2008, 08:10:18 PM »
try ko po ha.... ang alam ko kc un mga motor is inductive loads gaya ng ref at aircon at mag pumps pero halos purely resistive ang mga load natin sa bahay at ang power factor natin dun is almost unity (1.0) so we dont actually need to correct the power factor at all. Ginagawa eto sa mga industrial plants kung saan maraming inductive loads at correct nila eto sa pamamagitan ng capacitive load usually gamit cla ng capacitor bank or synchronous motor para macorrect un power factor at meron din etong mga protection tulad ng breaker pagkinabit sa system.. ang pagkakaalam ko my penalty sa mga industrial plant pg masyado mababa un power factor nila at my benifits cla makuha pagmataas...

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Offline delfz

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Re: Power Factor Computation
« Reply #17 on: September 27, 2008, 08:37:39 PM »

Power = Volts x Current x power factor  pag single phase
Power = 1.732 x Volts x Current x power factor for three phase naman po sir.
power factor is also cosine Ø which is the phase difference between the voltage and the current
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Offline kinyo

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Re: Power Factor Computation
« Reply #18 on: September 27, 2008, 09:36:39 PM »
kadalasan merong data nakadikit sa likod ng ref ... volts, amps, watts ... pwede na macompute ang power factor sa tatlong yan  :)

Offline motion55

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Re: Power Factor Computation
« Reply #19 on: September 28, 2008, 08:55:38 AM »
nakow eh ala ata aku nun
meron lang ako eh clamp meter, multimeter eh

wala bang ibang option?

BR

You also need a watt-meter.

Power factor = (watt-meter reading in watts) / (Voltage x Amps readings from multimeter & clamp meter)

The easiest is borrow a small watt-hour meter. Measure the power consumption over an hour time period. Apply the above formula to get the average power factor.




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Re: Power Factor Computation
« Reply #19 on: September 28, 2008, 08:55:38 AM »

 

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