UTILITY CONTRIBUTION
UTILITY CONTRIBUTION
(OP)
Dear Friends,
What type of fault(ik,ib,ip) do we use for utility contribution while running a electrical study.
What type of fault(ik,ib,ip) do we use for utility contribution while running a electrical study.






RE: UTILITY CONTRIBUTION
RE: UTILITY CONTRIBUTION
FWIW, that terminology means nothing to me here in the USA - and I've done a lot of fault calculations.
RE: UTILITY CONTRIBUTION
Initial symmetrical short-circuit current I"k
peak short-circuit current ip
symmetrical short-circuit breaking current Ib
steady-state short-circuit current Ik
Usually an utility may transmit initial symmetrical short-circuit power S"k
and may be the System impedance at your connection point [or reactance to resistance ratio].
However "types" of short-circuit current could be:
line-to-line short circuit, line-to-earth short circuit, line-to-line short circuit with earth connection.