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what is lightning arrester?

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In order to reduce the effect of natural lightening so that the transformer can be saved from the very high voltage and current caused by the lightning, a device or u can say a protective device is connected in parallel with the incoming terminals of the transformer which bypasses all the fault current and voltage of the lightning is called lightning arrestor
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I want to add...
It is non-linear resistor device
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A protective device use to conduct high voltage surge on power system to the ground
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Lighting arrester is a device which grounding the faulty or excess currents from the atmosphere thunders.  this device's gives protection from the natural higher voltages


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It is a protective device protects the high voltage surges
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To discharge the residual capacitive voltage
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Light arrester is a protecting device which is used at substation for protecting the devices in the substation from lighting phenomenon.

     

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