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lightning strike force

lightning strike force

lightning strike force

(OP)
Gents

I am trying to design a support structure for a EHV line, is there a method to calculate the force appears on cable due to  ? Cable manufacturer has some recommendations based on practical experiences  I want to know if its possible to calculate by theoretical means or not .

Thanks
 

RE: lightning strike force

Try the Southwire Overhead Conductor Manual.

RE: lightning strike force

The title of your question mentions lightning force, so I assume that is what the question mark in the body of the question is about.  There may be a physical force caused by a lightning strike, but it is not a factor in the strength of an EHV line structure.
 

RE: lightning strike force

(OP)
Its an underground cable from my XFMR to switchyard ,in case of having any fault on cable that would generate a massive force on cable , to be able to keep the cable in position it should be supporeted , i want to know if it possible to calculate that force then it would determine how to support the cable .

Thank , Marry xmas.

RE: lightning strike force

Have you done any Googling on bus bar supports? Treat the cables as bus bars and base your calculations on the maximum asymetrical short circuit current.  

Bill
--------------------
"Why not the best?"
Jimmy Carter

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