what is the meaning of the parameters labeled on the surge
arrestor like 150/20 ???

Answer Posted / ashish

I Am Not getting u r Question Actually The Surge Arrestor
For Medium & High Voltage Substation is as
Voltage Rating Of LA ( KV )= 0.8* LINE Volgage of the
Substation.

here 0.8 is earthing coefficent factor for solidely
grounded system.....

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