how much kn lightning arrestor is used in 11kv line
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Answer Posted / nirajan poudel
9 kv surge arrestor is used in 11 kv (incoming feeder)
line so that to prevent the high voltage entering the main
substation when lightening occurs.The lightening arrestors
do not let the lightening to fall on the station.If some
lightening occurs the arrester pulls the lightening and
ground it to the earth.The LA are grounded to the earth.It
works with an angle of 30 to 40 degree making a cone.
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