A Novel Approach to the Design of Metal-Clad Switchgear for a Distribution Substation, Using Vacuum Circuit Breakers

Modern metal-clad switchgear using vacuum circuit breakers allows design flexibility not available in previous designs of metal-clad switchgear. A distribution substation using the breaker-and-a-half scheme in metal-clad construction is described, and the physical requirements of an eight-circuit substation are traced through three different generations of metal-clad switchgear design.