Answer Posted / dipak
NGR:- Neutral grounding resister
In high voltage or extra high voltage line NGR is used.
Mainly this NGR are used for to decrease leakege current.
So that current cant able to come to Neutral of the trafo.
so we can save our trafo.
If any big earth fault occur in system that more amount of
current will flow in neatral (Ia+Ib+Ic) so that comes to
Neutaral of the trafo so if we put some resistance than it
disappiate this cuurent in heat purpose not able this
current to trafo.
so that's why NGR rating also have temprature stability and
withstand time.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.
please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in
full form of flry b
IN SINGLE PH TRANSFORMER IF LEKAGE IMPEDANCE DROP IS NEGLECTED ,THE FLUX IN THE MAGNETIC CORE and the lekage flux linking a winding are a)proportional to the applied v to the winding i respectively.
hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx
How many types are using in 220kv/400 kv swith yard
What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?
In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is
how we calculate the short circuit capacity of the busbar in LV & HT?
1.what is mean by 8/20 micro sec waveshape
what kind of quetions will ask in BHEL in interview? Plz help me?
in dc series motor if field wdg is shorted then
why we used dc supply for field in dg set
in my working site. momentary jerck in electrical supply ocurred frequently which cause of multiple losses in our electrical equipements. how can we protect our electrical machines and equipements in this situation.
In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.
