what is neutral grounding? why is it required? what is
neutral grounding resistor and how is its value calculated??
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Answer Posted / mahmud
Impedance earthing - The purpose of this method is to limit
the current for greater safety.
There are 3 type-
1.Earthing through reactance.
2.Earthing through ARC - Suppression coil.
3.Earthing through resistor.
These parameters are needed to specify the earthing
resistor:
U : Rated voltage line to line voltage or system voltage
(kV)
If : Rated fault current (A)
T s : Rated time (Sec) - Duration of the fault
Resistance value :
R=U/(I.Sqare root3)
| Is This Answer Correct ? | 42 Yes | 14 No |
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