Q.

Insulation coordination for UHV lines (above 500 kV) is done based on

  • ALightning surges
  • BLightning surges and switching surges
  • CSwitching surges
  • DNone of the above 
Correct Answer : (C)

Switching surges

Hints :

Insulation coordination for UHV lines (above 500 kV) is done based on Switching surges.

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