what is means of ALF,kPV(min),lexc(max)at Vk,Rct@75 degree centrigate ohm in c

what is means of ALF,kPV(min),lexc(max)at Vk,Rct@75 degree
centrigate ohm in current transformer name plate?

Question Posted / varun tripathi

2 Answers
4417 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is means of ALF,kPV(min),lexc(max)at Vk,Rct@75 degree centrigate ohm in current transformer n..

ALF--accuracy limit factor(ratio of nominal over current to the rated current)
KPV--knee point voltage(secondary voltage must be less than KVP so that ct accuracy will not hampered)
KPV=k.Is(Rct+Zs) where Rct=resistance of secondary winding at 75 c

Is This Answer Correct ?

2 Yes

0 No

what is means of ALF,kPV(min),lexc(max)at Vk,Rct@75 degree centrigate ohm in current transformer n..

Answer / m.esakkiraja

1. ALF - Accuracy Limit Factor
It is the ratio of Instrument limit primary current to the Rated primary current.

2. KPV- Knee point Voltage
It is defined as a point where 10% increase in the Secondary Voltage causes an increase in the Secondary Current by 50%.

3. Iexc- Excitation current
A transformer exciting current is the current or amperes required to energize the core.

4. Rct @75°C - Resistance of Secondary winding on CT at 75°C.

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????

0 Answers

What are the basic component of a cro?

0 Answers

What is the effect of positive feedback on stability of the system?

0 Answers

i am going to give the JSEB,RANCHI exam for power plant,so i need some samples of papers related to that,so please send me these papers by my mail id.

0 Answers

What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

0 Answers

what is meant by HT&LT?

5 Answers

WHAT IS THE DIFFERENE IN ACTION OF MCB,MCCB,RCCB

0 Answers IBM,

how to find out cable size if load is 2800 watts, 230 volts AC supply and load distance is 1800 meters

0 Answers

CAn any one can tell me what is the operation of ceiling fan and how it will start

2 Answers

To determine the Healthiness of Insulation we will be performing Dielectric tests i.e Insulation Resistance test, Partial Discharge test,Switching Impulse, Lightning impulse, Tan Delta test ...etc why we required to perform this many test, why cant we do only one test. for Transformer, CT's

1 Answers

what is the function of RVT

4 Answers RMSI,

what is FET

1 Answers

For more Electrical Engineering Interview Questions Click Here