GE F60 - Page 395

GE Multilin F60 Feeder Protection System 5-263
5 SETTINGS 5.7 CONTROL ELEMENTS
5
Figure 5–122: HI-Z SCHEME LOGIC
827838A9.CDR
SETTING SETTING
SETTING
SETTING
SETTING
SETTING
SETTING
SETTING
LOAD ANALYSIS ALG.
SETTING
ENERGY ALGORITHM
RANDOMNESS ALGORITHM
EXPERT ARC DETECTOR
FLEXLOGIC OPERANDS
FLEXLOGIC OPERAND
FLEXLOGIC OPERANDS
FLEXLOGIC OPERANDS
SETTINGS
SETTINGS
HI-Z FUNCTION: HI-Z ARCING SENSITIVITY:
HI-Z 3-PHASE EVENT
THRESHOLD:
HI-Z PHASE RATE OF
CHANGE:
HI-Z VOLTAGE SUPV
DELAY:
HI-Z PHASE OC MIN
PICKUP:
HI-Z NEUTRAL OC MIN
PICKUP:
HI-Z LOSS OF LOAD
THRESHOLD:
HI-Z EVEN HARMONIC
RESTRAINT:
LOAD ANALYSIS IN
NORMAL STATE
HI-Z VOLTAGE SUPV
THRESHOLD:
HI-Z NEUTRAL RATE OF
CHANGE:
HI-Z IOC-A
LATCH O/C
VALUES
LATCH LOL
VALUES
HI-Z IOC-B
HI-Z IOC-C
HI-Z IOC-N
HI-Z LOSS OF LOAD
HI-Z ARC DETECTED
HI-Z ARC DETECTED-A
HI-Z ARC DETECTED-B
HI-Z ARC DETECTED-C
HI-Z ARC DETECTED-N
HI-Z DOWNED COND
HI-Z DOWNED COND-A
HI-Z DOWNED COND-B
HI-Z DOWNED COND-C
HI-Z DOWNED COND-N
HI-Z OC PROTECTION
COORD TIMEOUT:
HI-Z PHASE EVENT
COUNT:
LOAD ANALYSIS ALGORITHM
INDIRECT SETTING
EAD COUNT LIMIT:
HI-Z GROUND EVENT
COUNT:
INDIRECT SETTING
EAD THRESHOLD:
HI-Z EVENT COUNT
TIME:
IA RMS
VA RMS
VB RMS
VC RMS
IB RMS
IC RMS
IG RMS
Enabled=1
OR
OR
RUN
RUN
RUN
RUN
RUN
RUN
RUN
RUN
RUN
LOAD EVENT DETECTOR ALGORITHM
EVEN HARM RESTR. ALG.
VOLTAGE SUPERVISION ALG.
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
IA > Threshold
IB > Threshold
IC > Threshold
IA > Threshold
IB > Threshold
IC > Threshold
IA > PKP
IB > PKP
IC > PKP
IG > PKP
IA% > Threshold
IB% > Threshold
IC% > Threshold
IA EVEN % > PKP > 0
IB EVEN % > PKP > 0
IC EVEN % > PKP > 0
RUN
VA % > PKP
VB % > PKP
VC % > PKP
IG > Threshold
PH A
PH B
PH C
GND
PH A
Arcing Confidence Ph B
Arcing Confidence Ph C
Arcing Confidence G
Zero Confidence Level
PH B
PH C
GND
AND
OR
OR
0
0
1 sec
OR
OR
Arcing Confidence Ph A
HIGH EADs (A) > LIMIT
HIGH EADs (C) > LIMIT
HIGH EADs (B) > LIMIT
HIGH EADs (G) > LIMIT
Any CL > EAD Thresh.
FROM
SOURCE
IG
IG-FFT
COUNT PH A > PH COUNT
in COUNT TIME
COUNT PH B > PH COUNT
in COUNT TIME
COUNT PH C > PH COUNT
in COUNT TIME
COUNT G > GND COUNT
in COUNT TIME
HI-Z ARC SUSPECTED-A
HI-Z ARC SUSPECTED-B
HI-Z ARC SUSPECTED-C
HI-Z ARC SUSPECTED-N
HI-Z ARC SUSPECTED
PHASE
SELECTION
LOGIC AND
ARC ALARM
VS. DOWNED
CONDUCTOR
DISCRIMINATOR
AND
AND
EVEN, ODD AND
NON HARMONICS
CT
SATURATION
DETECTOR
(Selects
the
source
of
harmonic
signals)
HI-Z MODULE
HI-Z SOURCE:
EVEN, ODD AND
NON HARMONICS
SETTING