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Anonymous Poster

Power Factor Measurement (PF)

11/27/2006 12:25 AM

any body know how to measur powerfactor for a 3 phase circuit just knowing current in three phase (imp:magnitude only) along with voltages and resistence in all phases...
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Pathfinder Tags: 3-phase measurement Power Factor resistance Voltage
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jstolaruk
Power-User

Join Date: Nov 2006
Location: SE MI USA
Posts: 105
#1

Re: Power Factor Measurement (PF)

11/27/2006 11:48 AM

See this document:

http://www.myronzucker.com/docs/CALMANUAL.pdf
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jowens
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Safety - ESD - RF Manufacturing ESD Installer

Join Date: Nov 2005
Location: Princess Anne, Maryland USA
Posts: 184
#3
In reply to #1

Re: Power Factor Measurement (PF)

11/28/2006 7:46 AM

Thanks jstolaruk. That is an exellent link!

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Anonymous Poster
#2

Re: Power Factor Measurement (PF)

11/28/2006 6:39 AM

power factor= active power/apparent power

= VI PF/ VI

or

PF = R/Z
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Anonymous Poster
#4

Re: Power Factor Measurement (PF)

11/28/2006 9:49 AM

I think you would need to either know the impedence characteristics of the load (inductive, capacitive, or resistive), OR be able to measure the phase relationship of the voltage to current in one of the legs to determine the PF...
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mahalingam
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Join Date: Nov 2006
Location: Chennai - India
Posts: 29
#5
In reply to #4

Re: Power Factor Measurement (PF)

11/30/2006 9:13 AM

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