We have 11kV/110V three phase indoor potential transformer in 66/11kV Sub-station, where the failure of PT is frequently happening and the rating of the PT is 0.2 class accuracy, with primary star and seconday (two cores) star connected.
Some experts has suggested to not to connect the PT Primary neutral to the ground because when transformer neutal NCT connection is loose; the faulty current will flow through the PT primary neutral, resulting into failure of PT.
My question is: Is it necessary to remove the primary neutral connection of the PT from ground? if not, what would be the reason for failure of PT.
Please guide me.
- 2 Answers
- 2814 Views
- KPTCL, I also Faced
- E-Mail Answers
Answer Posted / karthikeyan
hai mr.gokul,what kind of failure in pt,please tell me.i will clear this problem..,
regards,
karthikeyan
+919095206722 (whats app)
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What are your future plans for the company if permanently employed?
why co incidence factor considered in transformer sizing?
Hi Everyone ! My Name is Hakim ullah khan please i need formula of Cable Rating because i want to calculate by self without check any Table Chart... Thank you.....
can any tell me why slope 40% and 80% is calculated in differential protection?
BRIEFLY EXPLAIN THE STORAGE CLASSES AND THEIR TYPES IN C
In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?
Q: How to calculate Transformer losses , tell us by Formula.
How do we calculate over and under frequency tolerance from generator data?
PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL
What is line resistance of cable & how it can be measured ?
What will happen if the d.c. Machine is operated below rated speed?
How does a transformer contribute towards the widespread popularity of ac system over dc?
how the B-H loop obtain under the static condition
What is the function of electron gun assembly used in crt?
what shoud be strength and weakness to impress interviewer????????
