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This paper details advancements in the field of dead-front separable insulated connectors for underground distribution systems. Heretofore, all dead-front loadbreak separable insulated connectors have been limited to 200 A of load current. This work describes in detail the latest technology in dead-front separable insulated connectors: the 600 A loadbreak connector system.
This paper details advancements in the grounding of dead-front underground distribution (UD) systems that yield safer operation and prevent outages. Standard 200 A grounding elbows for UD systems are rated for a maximum fault-closure of 10 kA. A very hazardous fault accompanied by flying bushing fragments will generally result if a fault-closure occurs above 10kA. Some utilities have been forced to...
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