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How to design the earth grid for lightning protection in an
industry
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Answer Posted / vishal ingle
lighteining protection can be achieved by using lightening
arrestors at the highest points in an industry if its area
is less. but for larger area to be covered, several
lightening areestors are to be used. or
in the EHV substations, continuous earth wire mesh is
formed covering entire area.
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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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