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10. THE MOST COMMON TYPE OF THREE PHASE IN UNSYMMETRICAL
FAULTS IS ........
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Answer Posted / thuranga
L-G fault is most common in distribution systems,as the
trees and buildings are near by the distribution lines,
while in transmission lines any of the fault can
occur....but occurrence of fault is very rare,as all the
protection steps are taken,and the fault may occur mostly on
the degradation of the suspended disc insulators.....where
the leakage current flows through the pole/tower to the
ground, through insulator.
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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,
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