7)Calculation of forces generated because of short circuit

1) Peak electro-magnetic forces between phase conductors




Where, ip = peak value of 3 phase s/c current, in ka
l = distance between supports
a = centre to centre conductor distance


2) Peak electro-magnetic forces between sub-conductors



Where, ip = peak value of short circuit current, ka
ls = distance between supports/stiffeners
n = number of sub-conductors per phase
as = effective centre to centre distance


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