Sep 2, 2009 #1 S svaidy Newbie level 5 Joined Aug 9, 2009 Messages 10 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Thanjavur Activity points 1,352 how to find power factor Hello, I have the following values : V=210volts, I=1.3 Amps, time=20ms Please tell how to calculate the power factor. please tell the procedures. Thanking you, with regards, S.Vaidyanathan,
how to find power factor Hello, I have the following values : V=210volts, I=1.3 Amps, time=20ms Please tell how to calculate the power factor. please tell the procedures. Thanking you, with regards, S.Vaidyanathan,
Sep 3, 2009 #2 P Prabakaran Full Member level 3 Joined Jan 22, 2007 Messages 167 Helped 9 Reputation 18 Reaction score 3 Trophy points 1,298 Location Chennai(India) Activity points 2,273 how to find power Dear vaidy Please give me the details how u calculate the time. U Need to get the ZCD for Voltage & Current in External Interrupt Mode. From that using Timer u can Calculate the Power Factor. Regards Prabakaran
how to find power Dear vaidy Please give me the details how u calculate the time. U Need to get the ZCD for Voltage & Current in External Interrupt Mode. From that using Timer u can Calculate the Power Factor. Regards Prabakaran
Sep 3, 2009 #3 S svaidy Newbie level 5 Joined Aug 9, 2009 Messages 10 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Thanjavur Activity points 1,352 how to find power factor Hi , I also have doubt, my sir asks to suppose you have this value? how to find the power factor. we need to convert the voltage current into degree and take cos(phi). Thank you Sir.
how to find power factor Hi , I also have doubt, my sir asks to suppose you have this value? how to find the power factor. we need to convert the voltage current into degree and take cos(phi). Thank you Sir.
Sep 4, 2009 #4 C CMOS Advanced Member level 3 Joined Jan 6, 2004 Messages 862 Helped 94 Reputation 186 Reaction score 50 Trophy points 1,308 Location USA Activity points 5,673 What is the frequency? 50Hz or 60Hz? If it is 50Hz, cycle time is 20ms. So the phase difference in degrees between current and voltage will be Phi = t x 360 / 20ms Phi = 20ms x 360 / 20ms Phi = 360° or 0° Hence, PF = Cos(Phi) = Cos(0) = 1
What is the frequency? 50Hz or 60Hz? If it is 50Hz, cycle time is 20ms. So the phase difference in degrees between current and voltage will be Phi = t x 360 / 20ms Phi = 20ms x 360 / 20ms Phi = 360° or 0° Hence, PF = Cos(Phi) = Cos(0) = 1