A. Manufacturer qualifications: Engage a firm with at least 30 years’ experience in manufacturing medium-voltage, gasinsulated, vacuum circuit breaker switchgear. The manufacturer’s proposed product shall have been produced for at least 20 years prior to the due date for the equipment proposal. The manufacturer of the switchgear assembly shall also manufacture the medium-voltage circuit breakers. B. Comply with requirements of latest revisions of applicable industry standards, specifically including the following: 1. Gas-insulated switchgear. a. IEC 62271-200 - High-voltage switchgear b. IEC 62271-1 - High-voltage common requirements c. IEC 60044-7 – Current transformers d. IEC 60044-8 – Voltage transformers e. ANSI/IEEE C37.20.2 (Where applicable.) – Metal-clad switchgear f. ANSI C37.55 (Where applicable.) – Conformance tests g. UL-Listed (Optional. Availability depends on section detailed requirements.) h. ANSI/IEEE C37.20.7-2017 – Internal arcing tests. 2. Circuit breakers. a. IEC 62271-100 – High-voltage circuit breakers b. ANSI/IEEE C37.04 - Rating structure for high-voltage circuit breakers c. ANSI/IEEE C37.09 – High-voltage circuit breaker testing d. ANSI/IEEE C37.06 – Preferred ratings for high-voltage circuit breakers
