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What is the function of Lightning Arrester & Wavetrap in
Power system ??
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Answer Posted / nirmal karmakar
Lightning Arrester or Surge Arrester is a electric device
which protects the equipments from extra high voltage or
surge voltage. It provides a low resistance path for surge
voltage or high voltage. When lightning occures then for
micro sec a very high voltage produces which may damage the
equipments. So to protects such equipments LA connceted
Parally or shunt with equiments.Although it provides low
resistance path for EHV, so all surge voltages directly
grounded and equipment save from damage.
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