To meet the above criteria, typical overhead distribution circuits are sectionalized with numerous fault interrupting devices. Distribution transformersthat tap the lines to provide service to customers are usually protected withfuses. Taps off the main line are protected with fuses, automatic reclosers, andsectionalizers. Automatic reclosers and sectionalizers are also often installedin the main line. A relayed circuit breaker is typically installed at the lineterminal at the substation, although automatic reclosers are also sometimesapplied at the terminal location. In recent years, techniques to apply newtechnologies for obtaining a greater level of automation on distributioncircuits have been developed and applied in order to improve service reliability.
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