Type SGR-12 Reclosing Relay Manual

This document provides installation, operation, and maintenance instructions for the Type SGR-12 reclosing relay, which provides instantaneous reclosure of an electrically operated circuit breaker and automatically resets if the breaker remains closed for a predetermined time. It details the relay's construction, including a synchronous motor-driven time-delay element and a toggle-contact element, along with its application in attended or non-attended stations and its electrical characteristics for 115/230 V AC or DC control circuits.