5-244
L60 Line Phase Comparison System
GE Multilin
5.6 CONTROL ELEMENTS
5 SETTINGS
5
•
Autoreclose mode is programmed for three-pole operation
•
The shot counter is not at 0; that is, the scheme is not in the reset state. This ensures a second trip will be three-pole
when reclosing onto a permanent single phase fault.
•
1.25 cycles after the single-pole reclose is initiated by the
AR 1P INIT
signal.
ZONE 1 EXTENT:
The zone 1 extension philosophy here is to apply an overreaching zone permanently as long as the relay is ready to
reclose, and reduce the reach when reclosing. Another zone 1 extension approach is to operate normally from an under-
reaching zone, and use an overreaching distance zone when reclosing the line with the other line end open. This philoso-
phy could be programmed via the line pickup scheme.
The “Extended Zone 1" is 0 when autoreclose is in lockout or disabled and 1 when autoreclose is in reset.
1.
When "Extended Zone 1" is 0, the distance functions shall be set to normal underreach Zone 1 setting.
2.
When "Extended Zone 1" is 1, the distance functions may be set to Extended Zone 1 Reach, which is an overreaching
setting.
3.
During a reclose cycle, "Extended Zone 1" goes to 0 as soon as the first
CLOSE BREAKER
signal is issued (
AR SHOT
COUNT > 0
) and remains 0 until the recloser goes back to reset.
USE OF SETTINGS:
The single-phase autoreclose settings are described below.
•
AR MODE
: This setting selects the Autoreclose operating mode, which functions in conjunction with signals received
at the initiation inputs as described previously.
•
AR MAX NUMBER OF SHOTS
: This setting specifies the number of reclosures that can be attempted before reclo-
sure goes to lockout when the fault is permanent.
•
AR BLOCK BKR1
: This input selects an operand that will block the reclose command for breaker 1. This condition can
be for example: breaker low air pressure, reclose in progress on another line (for the central breaker in a breaker and
a half arrangement), or a sum of conditions combined in FlexLogic™.
•
AR CLOSE TIME BKR1
:This setting represents the closing time for the breaker 1 from the moment the “Close” com-
mand is sent to the moment the contacts are closed.
•
AR BKR MAN CLOSE:
This setting selects a FlexLogic™ operand that represents manual close command to a
breaker associated with the autoreclose scheme.
•
AR BLK TIME UPON MAN CLS
: The autoreclose scheme can be disabled for a programmable time delay after an
associated circuit breaker is manually commanded to close, preventing reclosing onto an existing fault such as
grounds on the line. This delay must be longer than the slowest expected trip from any protection not blocked after
manual closing. If the autoreclose scheme is not initiated after a manual close and this time expires the autoreclose
scheme is set to the reset state.
•
AR 1P INIT
: This setting selects a FlexLogic™ operand that is intended to initiate single-pole autoreclosure.
•
AR 3P INIT
: This setting selects a FlexLogic™ operand that is intended to initiate three-pole autoreclosure, first timer
(
AR 3P DEAD TIME 1
) that can be used for a high-speed autoreclosure.
•
AR 3P TD INIT
: This setting selects a FlexLogic™ operand intended to initiate three-pole autoreclosure. second timer
(
AR 3P DEAD TIME 2
) can be used for a time-delay autoreclosure.
•
AR MULTI-P FAULT:
This setting selects a FlexLogic™ operand that indicates a multi-phase fault. The operand value
should be zero for single-phase to ground faults.
•
BKR ONE POLE OPEN:
This setting selects a FlexLogic™ operand which indicates that the breaker has opened cor-
rectly following a single phase to ground fault and the autoreclose scheme can start timing the single pole dead time
(for 1-2 reclose sequence for example, breaker 1 should trip single pole and breaker 2 should trip 3 pole).
The scheme has a pre-wired input that indicates breaker status.
•
BKR 3 POLE OPEN:
This setting selects a FlexLogic™ operand which indicates that the breaker has opened three
pole and the autoreclose scheme can start timing the three pole dead time. The scheme has a pre-wired input that indi-
cates breaker status.
Summary of Contents for UR series
Page 2: ......
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Page 12: ...xii L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 32: ...1 20 L60 Line Phase Comparison System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 54: ...2 22 L60 Line Phase Comparison System GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 438: ...7 8 L60 Line Phase Comparison System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 478: ...8 40 L60 Line Phase Comparison System GE Multilin 8 3 FAULT LOCATOR 8 THEORY OF OPERATION 8 ...
Page 502: ...A 10 L60 Line Phase Comparison System GE Multilin A 1 PARAMETER LIST APPENDIXA A ...
Page 584: ...B 82 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIXB B ...
Page 622: ...D 10 L60 Line Phase Comparison System GE Multilin D 1 PROTOCOL APPENDIXD D ...
Page 634: ...E 12 L60 Line Phase Comparison System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...
Page 642: ...F 8 L60 Line Phase Comparison System GE Multilin F 3 WARRANTY APPENDIXF F ...