GE Multilin 850

CHAPTER 4: SETPOINTS CONTROL
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–391
Figure 4-166: Autorecloser - AR1 Current Supervision logic diagram - “PAGE 4”
894074A2.cdr
AND
SETPOINTS
AR1 2 SHOTS FOR CURRENT ABOVE:
I >= Setting
AR1 LOCKOUT FOR CURRENT ABOVE:
AND AND AND
SETPOINTS
AR1 CUR SUPERV FUNCTION: Disabled = 0 Enabled
Phase B fault current Phase C fault current Phase A fault current
AND
SELECT HIGHEST CURRENT RUN
SETPOINTS
AR1 CUR SUPERV LOCKOUT: Enabled Disabled = 0
RUN
SETPOINTS
AR1 3 SHOTS FOR CURRENT ABOVE:
I >= Setting
RUN
SETPOINTS
AR1 1 SHOT FOR CURRENT ABOVE:
I >= Setting
RUN
SETPOINTS
I >= Setting
RUN
FLEXLOGIC OPERAND
AR1 ShotRdc to 3
FLEXLOGIC OPERAND
AR1 ShotRdc to 1
FLEXLOGIC OPERAND
AR1 ShotRdc to 2
FLEXLOGIC OPERAND
AR1 ShotRdc to LO
AR1 MAX NUMBER OF SHOTS = 1 AR1 MAX NUMBER OF SHOTS = 2 AR1 MAX NUMBER OF SHOTS = 3
AR1 SHOTS REDUCED TO 1 AR1 SHOTS REDUCED TO 2 AR1 SHOTS REDUCED TO 3 AR1 SHOTS REDUCED TO LO
From
Page 1
AR1 Initiate
OR OR
From
Page 2
}
}
To
Page 2
PAGE 4 (AR1 CURRENT SUPERVISION)
Phase Currents
SETPOINTS
SIGNAL INPUT: CT Bank 1 - J1