Shielding angle for transmission line

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setcc.akl

Joined Jul 1, 2009
2
For lightening protection shielding angle for transmission line is taken 30° & in EPRI transmission line of reference book it is taken as 63°, whereas state government is taking shielding angle of L.A. 68° for protection of village areas & in ISS Shielding angle is taken as 45°. kindly inform resons for change in shielding angle in various practices.
 
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