BS EN 62271-113. High-voltage switchgear and controlgear. Part 113. Alternating current circuit-breakers with intentionally non-simultaneous pole operation— 70 стр.
High-voltage switchgear and controlgear - Part 306: Guide to IEC 62271-100, IEC 62271-1 and other IEC standards related to alternating current circuit-breakers— 327 стр.