how to calculate knee point voltage of current transformer?
- 20 Answers
- 149769 Views
- Bhel, Bhilai, Jackson, I also Faced
- E-Mail Answers
Answer Posted / arup
Knee point voltage, Vkn = (VA X ALF)/ In
VA= Burden =30 (Say)
ALF= Accu. Limit. Factor = 20 (Say)
In= Rated Secondar Current =5 amp (Say)
Then Vkn= 120 volts
If CT Ratio is 2000:5 then In=5
Class is 5P20 then ALF=20, P=Protection CT
| Is This Answer Correct ? | 37 Yes | 10 No |
Post New Answer View All Answers
what is (+) and (-) in generator field detector stand for?
When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?
how to remover corona effect and hysteresis losses from contactor
what is the transiant condition in alternator? and how it can be prevanted?
Which level of the Transformer oil got dielectric strengh? And why?
What do you mean by an instrument transformer?
What will be in Mahagenco Trade Test Exam? I want to know the same.
When MICC cables used ?
how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???
What are the basic component of a cro?
how to increase senstivity of ct
What do you mean by transformation ratio of instrument transformer?
what is a synchronizing lamp ?
In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring
what is feeder bay?
