This preview shows page 1. Sign up to view the full content.
Unformatted text preview: pf = cos = R/(R 2 + X 2 ) 1/2 , 1 pf 0. If > 0 (inductive impedance), i < v , pf lagging If < 0 (capacitive impedance), i > v , pf leading If = 0 for purely resistive load and the pf is unity Reactive Power (VAR) Q = V rms I rms sin = I rms 2 X Apparent Power (VA) S = V rms I rms = I rms 2  Z  = V rms 2 /  Z  Complex Power (VA) S = V rms ( I rms )* = V rms I rms = P + j Q = I rms 2 Z = ( V rms ) 2 / Z *...
View
Full
Document
This note was uploaded on 07/10/2011 for the course EEL 3113c taught by Professor Staff during the Spring '11 term at University of Florida.
 Spring '11
 Staff
 Impedance

Click to edit the document details