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1.Whats the use of GNAC(Generator Neutral Accessory
Compartment)
2. why generator or any other system require Neutral
Grounding and not Phase grounding
3. what happens if any one of the phase is grounded.
4. if 15kv is grounded directly what will happen, why it
should not be grounded like that
5. use of of NGTR(Neutral Grounding Transformer and
Resistor) for grounding is helpfull and how
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Answer Posted / mohit kochhar
1. for connecting equipments like ct, pt's.
2. neutral grounding is for flowing of third harmonic
component present in system to ground and it is grounding
at only one side either supply side or recieving side of
one level voltage like 220kv line or 33kv.. mostly on
sending side.
3 earth fault occur.
4 short cicuit current flow. depends on the impedance of
the generator.
5 NGTR is used for lowering fault current which flows
through neutral to the safe value to dissipated to ground
safely.
| Is This Answer Correct ? | 9 Yes | 3 No |
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