Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

How to size the Neutral grounding resistor?

Answer Posted / nagarajan

For example 20/25MVA Power Trans -132/6.9kv
1. FLC of Secondary=2092A
2.Phase to Phase Voltage for Secondary=6.9/1.732=3.98Kv
3.NGR =3980/2092=V/I=1.90Ohms for 30sec
It is only for power transformer.

Is This Answer Correct ?    2 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the main purpose of c.f.b.c.boiler

1664


what is meant by CT`s saturation ? Can we use Metering CT`s with Protetection CT`s ?

2129


why dimmerstate always connected in star connection? what will happen if it connected in delta?

2004


We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

1820


What is lifting power for 1 wb/m2 and 1 A magnet?

2140


What is the function of NER and NET?

2398


how i calculate the syncrones generator NGR resistance .if we have a 6mw generator line voltage of generator 11kv also line current 393.3 ampere.

2056


Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

1849


sir, Is their any measuring unit of knoking? please explian?

1836


Why do we apply both Differential and REF (HV and LV) protection schemes on YNyn configuration of a transformer?

2082


WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

6249


working principle of oil startar

1840


what is 400kv doble circuit quadpole tower?

1892


Is a d.c.compound motor is use as a booster? how?

2085


HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA

1916