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B. Surge protection (IEEE C62)

Insulation coordination, BIL, surge arresters, MCOV.

Lessons

Lesson 1

Insulation coordination + BIL + surge arresters

BIL (Basic Insulation Level), MOV surge arresters (MCOV / V_pr), coordination margin (BIL − V_pr) / V_pr ≥ 20-25%. IEEE 1313 / IEC 60071 standards. Lightning vs switching surges; arrester placement within 60-80 ft of equipment.

Senior ~12 min