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Question
what is the purpose of neutral grounding resistor (NER) and 
why?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
to limit the fault current entering into earth for safety
purposes..
 
Is This Answer Correct ?    33 Yes 2 No
Lux
 
Answer
# 2
THE purpose of neutral grounding resistor is to limit the
fault current of the system since ground fault current
takes earth as return path
 
Is This Answer Correct ?    27 Yes 1 No
Maqbool
 
 
 
Answer
# 3
Neutral Earthing Resistors (NERs) sometimes called Neutral Grounding Resistors are employed in medium-voltage AC distribution networks to limit the current that would flow through the neutral point of a transformer or generator in the event of an earth fault. NERs limit fault currents to a value that does not cause any further damage to switchgear, generators or transformers beyond what has already been caused by the fault itself. 
Is This Answer Correct ?    11 Yes 2 No
Elizabeth
 
Answer
# 4
NGR means Neutral grounding resistor. This is connected to
neutral wire to ground the extra leekage current.
Since in UT,UAT & ST star connection is used, that means
there are 4 wires (R,Y,B & N).Thus neutral is grounded with
a resistor.
 
Is This Answer Correct ?    5 Yes 8 No
Minal
 
Answer
# 5
the fault current in power system depend upon the impedence
value of the system,for neutral grounding which provides
high reactance tot the ps ,and low resistance to the ps,
 
Is This Answer Correct ?    1 Yes 5 No
Getdaya@yahoo.com
 
Answer
# 6
Neutral grounding resistor generally used in star connected
load in order to reduce the over voltages due to either
switching phenomena or lightning phenomena.

Neutral grounding reactor is another component used for the
same purpose.
 
Is This Answer Correct ?    4 Yes 9 No
Ramesh
 
Answer
# 7
any short circuits occur in stator or rotor then that short
circuit current will limitig and any erath fault occur in
rotor or stator then thats current will also limited value
by depending on resisance value
 
Is This Answer Correct ?    0 Yes 7 No
Subhani
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
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