How to calculate the average power factor in 3 phase
unbalanced system
Answer Posted / engr.abdurrahim
Dear Deepak,
Power factor is the cosine factor of the voltage & current
phase difference. Its a short defination. But if you go
deeply, Power factor=cos@,its depend only on load, instead
of phasewise.if you connect same load in every phase it
will show same power factor value in each phase.Because
power factor is depended upon load resistance=R & its
impedance=Z,
cos@ = R/Z,
So if you are going to calcualte the power factor of all
phase, you have to calculate all resistance & impedance of
the load. Then you can calulate the avg. power factor.
R=R1+R2+R3
Z+Z1+Z2+Z3
(Where Z=R+jXL=Impedance)
cos@=R/Z
Hope my answer will satisfy you.
Best Regards,
Engr.Abdurrahim
shaikh337@rediffmail.com
Is This Answer Correct ? | 15 Yes | 7 No |
Post New Answer View All Answers
What is the main cause of magnetism?
can we synchronize star system generators with delta system transmission line ? and how ?
Define noise?
What is the difference between type1 and type2 relay protection co-ordination for motor feeders
Which do you think is the most significant cause of energy loss in a factory?
What will be the effect if I use inverter as UPS mood?
What do you mean by power transformer?
How time response of the system is divided?
How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.
Z transform is use when system is not a) converges b) diverges
how freewheeling diode improves the powerfactor
What are the various kind of cables used for transmission?
WHAT IS THE CURRENT CARRYING CAPACITY OF 2.5/3 CORE HI TUFF CABLE,WILL IT SAFLEY CARRY 8.6 AMPS OVER 120 METRES,CAN YOU ALSO ANSWER WITH FORMULA FOR WORKINGS OUT ,THANK YOU 3RDYR APPRENTICE.
Approach of a cooling tower is the difference between temperatures of what factors?
When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number