Generator Neutral Short Circuit Current
Generator Neutral Short Circuit Current
(OP)
I'm working on a generator neutral bus design and I'm wondering what the short circuit current will be at the neutral. I can't find anything in IEEE on this subject. The spec for the isolated phase bus on the line side of the generator is 388kA Assym. Would the current on the neutral be 388kA/SQRT(3)?
Thanks for any help.
Steve
Thanks for any help.
Steve






RE: Generator Neutral Short Circuit Current
Rafiq Bulsara
http://www.srengineersct.com
RE: Generator Neutral Short Circuit Current
Rarely have I seen a neutral braced for phase to phase faults of three phase faults, which I attribuite to the thinking isolated phase bus can't fail anyway but phase to ground.
However, does anyone know what happens to the phases once they enter the GSU, or aux. transformer?
RE: Generator Neutral Short Circuit Current
rbulsara: What do you mean by "phase to neutral fault".
One thing I need to add... This is a generator neutral tie with all three bushings tied together with one copper conductor. It is 35,000A forced cooled and has a neutral grounding cubicle connected to the neutral tie.
cranky108: When we terminate isolated phase bus to the the GSU, it is in a segregated box so the fault would also be pahse to ground.
RE: Generator Neutral Short Circuit Current
Rafiq Bulsara
http://www.srengineersct.com
RE: Generator Neutral Short Circuit Current
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