Interested to Buy Any Domain ? << Click Here >> for more details...
Why NGR is required for 11Kv geneartor in power plant
- 2 Answers
- 17270 Views
- AB Inc, ABB, I also Faced
- E-Mail Answers
Answer Posted / mahadeva annigeri
NGR USED IN 11KV GENERATING STATION IS TO LIMIT THE FAULT CURRENT WITHIN THE SPECIFIED LIMIT,Ex: AS PER FORMULA I=V/R,V=11KV.R=63OHM.SO 11000/1.732/63=100A,NGR WILL CONTROL UP TO 100A ONLY BECAUSE GENERATOR IS CONNECTED WITH GRID (SYNCHRONIZED CONDITION)HEAVY FAULT CURRENT MAY OCCURED IN LINE,THAT FAULT CURRENT MAY DAMAGE WINDING INSULATION THATISWHY NGR IS USED TO PROTECT THE GENERATOR FROM HEAVY FAULT CURRENT.I THINK SO
| Is This Answer Correct ? | 16 Yes | 2 No |
Post New Answer View All Answers
In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?
is there any phase difference occurs while primary and secondary side mutual induction occurs?
what is Anti-pumping?
What is the type of feedback used in an op- amp schmitt trigger?
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?
checking procedure of capacitor based motors.used in fans etc?
Discuss the effect of sudden loading of an induction motor
any earth foult trip the relay but in welding time not trip by earth foult
why incomer bay is required before transformer bay if there are more than 1 nos. of transformer bay.
I Need standard operation procedure(SOP)for 500kva Oil type transformer oil filtration & Procedure for IR value checking.
what curve and rateing would you use for a three phase 0.75kw motor?
hi friends this is a newcomer in your community of enthusiastic peoples. i am preparing for SSC (CPWD JUNIOE ENGG EXAM FOR ELECTRICAL) pls guide me on the same how to crack it? PLS LET ME KNOW IS ANYONE THERE WHO PASED IT? CAN I GET THE QUESTION PAPERS OF PREVIOUS EXAMINATIONS?
why ss stablity limit is more transient stablity limit?
describe the phenomena of vacuum interruption in C.B
what are the main applications of transistor in non-linear region?
