Answer / abdul wajid

The standard earthing for 440V system is less than 1 ohm ,
for 33000/440V the standard earth resistance is 5 ohm

Answer / saic~ehvvibes

Earthing resistance standard values:

Without Grid (Individual Earth Pit) = Less than 01Ohm
With Grid = less than 05Ohms

which one is the most common system for secondary ditibution

1 Answers  

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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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