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The insulation strength of an EHV transmission line is mainly governed by
  • a)
    Load power factor
  • b)
    Switching over – voltage
  • c)
    Harmonics
  • d)
    Corona
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The insulation strength of an EHV transmission line is mainly governed...
Voltagesc)Conductor spaced)Type of insulating materiale)All of the above.
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Community Answer
The insulation strength of an EHV transmission line is mainly governed...
Switching surges are the governing factor in the design of insulation for EHV and UHV transmission lines.
Origins of switching overvoltage:
  • Energization of transmission lines and cables
  • Switching of high-voltage reactors
  • Switching of transformers that are loaded by a reactor on their tertiary winding
  • Switching of a transformer at no load
  • Switching at intermediate substations
  • Fault initiation and clearing
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The insulation strength of an EHV transmission line is mainly governed bya)Load power factorb)Switching over – voltagec)Harmonicsd)CoronaCorrect answer is option 'B'. Can you explain this answer?
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