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RET620 V2.0 ANSI Protective Relay Single Line Diagram
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This document is a technical drawing set for ABB RET620 V2.0 ANSI protective relays, detailing a typical single line diagram for a 2 or 3 breaker bus configuration with associated protective functions, trip circuits, and binary I/O. It also includes the relay order code, front panel elevation, and FT-1 switch arrangement for wiring and configuration of protective elements such as overcurrent, distance, and breaker failure relays.
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