piu(power interface unit) convert 3 phase ac power supply in
230 volt ac with stablised and no surge and interference
effect. piu mostly used in telecom sector for providing ac
supply to all equipment used in shelter and also control dg
and consist a lot of protection and showing alarm indication
and record events upto 500.
Please Help Members By Posting Answers For Below Questions
How to decide CT & PT ratings for a given transmission line
carrying some rated voltage?
in ct secondary one terminal is connected to earth why?
what is the breaking capacity and making capacity of circuit
breaker and how
what is mean by kneepoint voltage? when it will happen?
( my doubt is, if CT secondary is open means ct get
saturation or blas? what are factors are required for
plz give currect anws:
if 12v battery get discharged for 2 months after if we put
charge it will charge again?how much time it will take to
If Polarization index of motor 8.75 at 500volts of medium
voltage 4.16 KV motor what this mean winding good or bad pl
answer if any reffrence book give me the link
PLEASE TELL ME ABOUT QUESTION PAPER OF UPCL ENTERENCE EXAM.
How Load Factor, Demand Factor, Diversity Factor etc best
applied in designing an electrical circuit? Is it allowed
to consider these factors in each and every panel in an
electrical distribution system? Can any body suggest a good
book for reference?
does any one know where we can purchase insulation oil for
high voltage oil filled cables
I want to use Induction motor to open and close a 1 ton
door. How much power do I need.
Why current shoots up in the secondary on the knee point
voltage during saturation test of CT? How core saturation
effects the secondary current (while the primary side is
open)? What the logic behind this?
What is clock position of Transformer?what are the clock
positions are there?and what is different of them?
How generator NPS(NEGATIVE PHASE SEQUENCE TEST)TEST WAS DONE?
PROCEDURE WITH DETAILS?
why the earth is taken minimum in supplying? wather it the
proportional factor to getting work any equipment or a power
what is the correct format to create a resume for interview??