GE F60 Instruction Manual page 246

5.6 CONTROL ELEMENTS
SETTING
HI-Z FUNCTION:
Disabled=0
Enabled=1
HI-Z MODULE
EVEN, ODD AND
NON HARMONICS
CT
SATURATION
DETECTOR
(Selects
SETTING the
source
of
HI-Z SOURCE:
harmonic
signals)
EVEN, ODD AND
NON HARMONICS
IA RMS
5 IB RMS
IC RMS
IG RMS
VA RMS
VB RMS
VC RMS
5-158
SETTING
HI-Z ARCING SENSITIVITY:
RUN
ENERGY ALGORITHM
}
RUN
}
PH A
}
PH B
}
PH C
}
GND
RANDOMNESS ALGORITHM
}
RUN
}
}
PH A
}
}
PH B
}
}
PH C
}
}
GND
LOAD EVENT DETECTOR ALGORITHM
SETTING
HI-Z 3-PHASE EVENT
THRESHOLD:
RUN
IA > Threshold
IB > Threshold AND
IC > Threshold
SETTING
HI-Z PHASE RATE OF
CHANGE:
HI-Z NEUTRAL RATE OF
CHANGE:
RUN
IA > Threshold
IB > Threshold
OR
IC > Threshold
IG > Threshold
SETTING
HI-Z PHASE OC MIN
PICKUP:
HI-Z NEUTRAL OC MIN
PICKUP:
RUN
IA > PKP
IB > PKP
OR
IC > PKP
IG > PKP
SETTING
HI-Z LOSS OF LOAD
THRESHOLD:
RUN
IA% > Threshold
IB% > Threshold OR
IC% > Threshold
EVEN HARM RESTR. ALG.
SETTING
HI-Z EVEN HARMONIC
RESTRAINT:
RUN
IA EVEN % > PKP > 0
IB EVEN % > PKP > 0 OR
IC EVEN % > PKP > 0
VOLTAGE SUPERVISION ALG.
SETTING
HI-Z VOLTAGE SUPV
THRESHOLD:
RUN
VA % > PKP
VB % > PKP OR
VC % > PKP
Figure 5–87: HI-Z SCHEME LOGIC
F60 Feeder Management Relay
SETTINGS
HI-Z PHASE EVENT
COUNT:
HI-Z GROUND EVENT
COUNT:
HI-Z EVENT COUNT
TIME:
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
SETTINGS
HI-Z OC PROTECTION
COORD TIMEOUT:
INDIRECT SETTING
EAD COUNT LIMIT:
INDIRECT SETTING
EAD THRESHOLD:
EXPERT ARC DETECTOR
HIGH EADs (A) > LIMIT
Arcing Confidence Ph A
Arcing Confidence Ph B HIGH EADs (B) > LIMIT
Arcing Confidence Ph C HIGH EADs (C) > LIMIT
HIGH EADs (G) > LIMIT
Arcing Confidence G
Zero Confidence Level
Any CL > EAD Thresh.
}
G
FROM
I
SOURCE G-FFT
I
OR
FLEXLOGIC OPERANDS
HI-Z IOC-A
HI-Z IOC-B
HI-Z IOC-C
HI-Z IOC-N
LATCH O/C
AND
VALUES
FLEXLOGIC OPERAND
HI-Z LOSS OF LOAD
LATCH LOL
AND
VALUES
LOAD ANALYSIS ALG.
RUN
LOAD ANALYSIS IN
NORMAL STATE
0
1 sec
SETTING
HI-Z VOLTAGE SUPV
DELAY:
0
5 SETTINGS
FLEXLOGIC OPERANDS
HI-Z ARC SUSPECTED-A
HI-Z ARC SUSPECTED-B
HI-Z ARC SUSPECTED-C
HI-Z ARC SUSPECTED-N
HI-Z ARC SUSPECTED
LOAD ANALYSIS ALGORITHM
FLEXLOGIC OPERANDS
HI-Z ARC DETECTED
HI-Z ARC DETECTED-A
HI-Z ARC DETECTED-B
PHASE
HI-Z ARC DETECTED-C
SELECTION
LOGIC AND HI-Z ARC DETECTED-N
ARC ALARM
HI-Z DOWNED COND
VS. DOWNED
HI-Z DOWNED COND-A
CONDUCTOR
HI-Z DOWNED COND-B
DISCRIMINATOR
HI-Z DOWNED COND-C
HI-Z DOWNED COND-N
827838A8.CDR
GE Multilin