Capacitors and Power Factors

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technology Associate Join Date: Nov 2008 Posts: 31	Capacitors and Power Factors 12/17/2008 1:28 AM
	Dear Sirs How the capacitors helps in improving the Power Factor?
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#1 Re: How capacitor helps in PF to improve? 12/17/2008 2:20 AM
	They store and provide VARs to an inductive circuit. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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Anonymous Poster	#6 In reply to #1 Re: How capacitor helps in PF to improve? 12/31/2008 2:20 AM
	according to power trangle when we raised capacitive power ( Lead power), then VARs (Reavtive power say loss ) decreases , so improve pf KVA= UNDER ROOT( (KW)Sq. + (KVR)Sq
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V.I.Abraham Guru Join Date: May 2007 Location: Pune , India Posts: 875 Good Answers: 42	#2 Re: Capacitors and Power Factors 12/17/2008 9:18 AM
	Most of the Industrial load is inductive and hence the power factor ( Cos Φ ) will be much less than unity or it results in lagging power factor.By adding capacitance in the circuit the power factor can be improved to reduce kVAR loss.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#3 Re: Capacitors and Power Factors 12/23/2008 12:03 PM
	On-line encyclopaediae - "power factor". Go-on. Try it! __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Anonymous Poster	#4 Re: Capacitors and Power Factors 12/29/2008 5:41 AM
	Dear Sir, But the capacitior shall be included at higher loads. At lower loads if you include capacitor in the circuit the Power factor may lead. A automatic Capacitor Switch is also required. Best Regards, N.Suresh
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#5 In reply to #4 Re: Capacitors and Power Factors 12/29/2008 1:15 PM
	No, it is the other way around. At LOW loads, the power factor is the poorest. The higher the loading, the better the PF becomes. If you do not oversize the capacitor, you will not over correct. Capacitor-at-load is the most effective means of correction because only the amount of capacitance to supply VARs to the inductive load is put on-line at any one time. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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Anonymous Poster (2); JRaef (2); PWSlack (1); V.I.Abraham (1)

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