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stage, which the ARC issues a three-phase trip signal (CB1_94TT or CB2_94TT) for the TRC
function; the ARC function abandons to reclose the CB#1 and CB#2 (ARC1 FT or ARC2 FT).
• CB is not ready for ARC operation
• Failure to issue ARC shot
• ARC block command has come through PLC connection points
• Multi-phase trip in SPAR mode
• Evolving fault (single phase to multiphase) in SPAR and TPAR mode
• No link within parallel lines in MPAR mode; ( final trip selected)
• Final trip selected for 3-phase fault (user settable)
• ARC close fail
• Shot number over
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