615 Series ANSI Protective Relay System Technical Drawing Set

This document is a technical drawing set (8 sheets) for an ABB protective relay system, detailing single-line diagrams, front panel elevations, and relay order codes. It includes logic configurations for breaker failure, lockout relay trips, and various protective functions (e.g., 50BF, 86T, 67/51N) with notes on PCM600 ACT settings, rotary switch emulation, and VT connection types.