IEEE Draft Standard for Ratings and Requirements for AC High-Voltage Circuit Breakers with Rated Maximum Voltage Above 1000 V - Amendment 1

This amendment will address items discovered by users 1 related to discrepancies with other industry standards: Harmonize pollution levels for normal service condition. Further define requirements for capacitive switching class C0. Clarify required electrical service capability. Improve definition of interrupting time. Implement requirements from IEEE C37.11 which are more properly in C37.04 Align material imported from NEMA SG-4 with current industry practices.