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Definition of "Lightning Arrestor" |
A protective spark gap device for protecting different pieces of equipment such as, power poles and towers, power transformers, and circuit breakers from damage from lightning strikes by shunting the currents to ground. / a voltage-dependent resistor which is connected in parallel with lightning-susceptible electrical equipment. It provides a low-resistance electrical path to ground during overvoltage conditions, thus diverting destructive lightning energy around the protected equipment. |
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