GE Multilin 850

CHAPTER 4: SETPOINTS CONTROL
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–393
Figure 4-167: Autoreclose - AR1 Zone Coordination - “PAGE 5”
892766A2.cdr
SETPOINTS
AR1 ZC FUNCTION: Disabled = 0 Enabled Phase B fault current Phase C fault current Phase A fault current
SETPOINTS
AR1 ZC PH CURRENT PKP: Ia >= I
PKP
RUN Ib >= I
PKP
RUN Ic >= I
PKP
RUN In >= I
PKP
RUN
SETPOINTS
AR1 ZC NTRL CURRENT PKP:
AND
OR
AND
SETPOINTS
AR1 ZC PICKUP/ DROPOUT TIME:
AND AND AND
AND
}
From Page 1
AR1 Breaker is closed
AR1 Initiate
From Page 2
AR1 Shot Count = MAX
AND
AR1 Coordinating lockout
AR1 Coordinating
To Page 2
To Page 1
FLEXLOGIC OPERAND
AR1 Coordinating
PAGE 5 (AR1 ZONE COORDINATION)
Tp
Td
Tp
Td
Tp
Td
Tp
Td
Tp= AR1 ZC PICKUP
TIME
Td= AR1 ZC DROPOUT
TIME
SETPOINTS
SIGNAL INPUT: CT Bank 1 - J1
3Io (Residual)