Automatic Fault Isolation Case Study Solution After considerable investigation of possible switchgear providers, the agency liked the flexibility of the G&W Electric Automated 15kV, SF6 insulated, padmount vacuum interrupters (TNI style) with SEL 451relays and SEL 2100 logic processor solution. For their immediate Stage 1 requirements for a critical load area, three G&W Electric padmount fault interrupting switches were installed on their radial system for fault isolation. The switches were configured with two source ways and four tap circuits. The four tap circuits utilized vacuum interrupters for fault protection and were electronically controlled using G&W Electric Type 3 controls. The tap circuits presently require manual reset if tripped by a fault but can easily be aut

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