5-146
F35 Multiple Feeder Protection System
GE Multilin
5.6 CONTROL ELEMENTS
5 SETTINGS
5
Figure 5–73: ILLUSTRATION OF THE INCIPIENT FAULT DETECTOR ALGORITHM
The following settings are available for each incipient cable fault detector.
•
INCIPIENT FAULT 1 FUNCTION
: This setting enable and disables operation of the incipient fault detection element.
•
INCIPNT FLT 1 BLOCK
: This setting is used to block operation of the incipient cable fault detector element. Assertion
of the FlexLogic™ operand assigned to this setting block operation.
•
INCIPIENT FAULT 1 SOURCE
: This setting selects a current source for the incipient cable fault detector element. This
source must be assigned a valid CT bank.
•
INCIPIENT FAULT 1 PICKUP
: This setting specifies pickup level of the overcurrent detector in per-unit values of the
CT nominal current.
•
INCIPNT FLT 1 MODE
: There are two modes of operation available for the incipient cable fault detector element. In
the “Number of counts” mode, a trip will be initiated only after the selected number of faults is detected. In the “Counts
per window” mode, a trip will be initiated only after the selected number of faults is detected within the time specified by
the
INCIPNT FLT 1 DETECT WINDOW
setting.
•
INCIPIENT FLT 1 TRIP COUNTS NUMBER
: This setting selects the number of faults required to initiate a trip.
•
INCIPNT FLT 1 DETECT WINDOW
: This setting specifies a time window for “Counts per window” mode of operation.
•
INCIPIENT FAULT 1 RESET DELAY
: This setting specifies a reset time for the output after the trip is initiated.
0.62
0.64
0.66
0.68
0.70
0.72
0.74
0
1.0
2.0
0.62
0.64
0.66
0.68
0.7
0.72
0.74
–2.0
–1.0
0
1.0
2.0
I
N
(neutral current)
I
FB
–0.5
Phase B
Phase C
Phase A
Incipient phase B fault
Curr
ent
(amps)
Curr
ent
(amps)
832774A1.CDR
PHASE CURRENTS
CALCULATED NEUTRAL AND
SUPERIMPOSED PHASE B CURRENT
Summary of Contents for F35
Page 2: ......
Page 4: ......
Page 296: ...5 174 F35 Multiple Feeder Protection System GE Multilin 5 9 TESTING 5 SETTINGS 5 ...
Page 328: ...7 8 F35 Multiple Feeder Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 350: ...A 16 F35 Multiple Feeder Protection System GE Multilin A 1 PARAMETER LIST APPENDIXA A ...
Page 422: ...B 72 F35 Multiple Feeder Protection System GE Multilin B 4 MEMORY MAPPING APPENDIXB B ...
Page 472: ...E 12 F35 Multiple Feeder Protection System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...