Surge Arresters Application and Selection
BIL of Arresters Housing 1. Surge Arresters are voltage sensitive devices 2. Clamp the over voltage down below the BIL of the equipment 3. BIL of the Arresters’ housing is irrelevant 4. Check insulator withstand capability of the housing (Use paragraph 8.1.2.4 of C62.11 and manufacturer’s data sheet).
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