An Improved Reclosing Relay

This paper describes a new reclosing relay which offers several features not included in available automatic, reclosing relays. Among the features included are: reset of the relay a short interval after any successful reclosure, to eliminate needless delay in subsequent reclosures and reduce unnecessary lockouts; a simple internal means of blocking the instantaneous trip circuit after initial circuit breaker trip-out, to facilitate system sectionalizing; immediate first reclosure through an initially closed contact in the relay to reduce first-reclosure time. Operation of the relay and circuit is completely described with emphasis on the operating conditions creating a demand for and the advantages offered by the several improvements. Possible settings and adjustments are discussed which provide a wide degree of versatility in application.