Answer Posted / jigs_eee
We have an automatic power factor controller installed and have six capacitors to control the power factor. the controller is switching on & off the capacitor in auto mode to control the power factor but when we monitor pf at the electricity board meter it is low i.e between 0.8 to 0.87 & @ controller it was unity. is it possible if the load is low?
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator
How to discuss the phase shift of transformer considering open delta?
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
what is smart grid? why we use it? explain in detals bcoz i want give presentatin from it....
Define maximum demand?
what is the safety points of vaccum circuit breaker.
WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME
What is the accepted limit to increase the choosen transformer capacity over the load and why ?
Explain the iniluencc of short circuit ratio on the pert'orniancc of synchronous machine.
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
Why two phase welding machine is used instead of three phase welding machine.
when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....
If breaker is undefined position, first step to do.
explain types of electric welding and its applications