DOES AN EARTH FAULT CURRENT ON THE DELTA SIDE OF A 6.6/33KV
STEP UP STAR-DELTA CONNECTED TRANSFORMER REFLECT ON THE
STAR SIDE? IF YES, THEN HOW AND WHAT IS THE AMOUNT OF
CURRENT REFLECTED?
Answer Posted / k.prakashchandra
There can not be earth fault on delta side as there is no
neutral for earthing and the neutral of the primary gets
isolated .It is customary to have delta -star step up
transformer instead of star-delta.
| Is This Answer Correct ? | 1 Yes | 9 No |
Post New Answer View All Answers
i've iocl interview.. if you know the interview process please give me information..
draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words
ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?
what happen if field of dc shunt motor opens? what is function of putting res. in parallel to one phase of 3 phase IM? the power supplied by 5A source in circuit is given by------Watt.
what is the carona effects meaning in HT line transmmission system
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams
what is the prosses for getting of 33kv licence (i have completed my engineering degree & working in 33kv substation for contract basis )????
What is the difference between rulling span and wind span of of an Over Head Transmission Line?
Some times to change of DOR of a motor, interchange of R & B is not effected and RYB take same current, but interchange of R&Y is effected ie change the DOR. My doubt is what is the problem in motor and how it is happen.
Explain the functioning of diode?
For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel
why co incidence factor considered in transformer sizing?
why lightning arrestor are made in two stack of insulator but why not cvt
how the synchronizing is obtained at bus couplers in grid substation? (because there we cannot change the frequency in one of transmission lines like in generator synchronization)