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GE Multilin
L60 Line Phase Comparison System
5-241
5 SETTINGS
5.6 CONTROL ELEMENTS
5
AR PROGRAMS:
The autorecloser provides four programs that can cause from one to four reclose attempts (shots). After the first shot, all
subsequent recloses will always be three-pole. If the maximum number of shots selected is “1” (only one reclose attempt)
and the fault is persistent, after the first reclose the scheme will go to lockout upon another Initiate signal.
For the 3-pole reclose programs (modes 3 and 4), an
AR FORCE 3-P
FlexLogic™ operand is set. This operand can be used
in connection with the tripping logic to cause a three-pole trip for single-phase faults.
The four autoreclose modes are described below:
1.
“1 & 3 Pole”: In this mode, the autorecloser starts the
AR 1-P DEAD TIME
timer for the first shot if the autoreclose is sin-
gle-phase initiated, the
AR 3-P DEAD TIME 1
timer if the autoreclose is three-pole initiated, and the
AR 3-P DEAD TIME 2
timer if the autoreclose is three-phase time delay initiated. If two or more shots are enabled, the second, third, and
fourth shots are always three-pole and start the
AR 3-P DEAD TIME 2(4)
timers.
2.
“1 Pole”: In this mode, the autorecloser starts the
AR 1-P DEAD TIME
for the first shot if the fault is single phase. If the
fault is three-phase
or a three-pole trip on the breaker occurred during the single-pole initiation
, the scheme goes to
lockout without reclosing. If two or more shots are enabled, the second, third, and fourth shots are always three-pole
and start the
AR 3-P DEAD TIME 2(4)
timers.
3.
“3 Pole-A”: In this mode, the autorecloser is initiated only for single phase faults, although the trip is three pole. The
autorecloser uses the
AR 3-P DEAD TIME 1
for the first shot if the fault is single phase. If the fault is multi phase the
scheme will go to Lockout without reclosing. If two or more shots are enabled, the second, third, and fourth shots are
always three-phase and start the
AR 3-P DEAD TIME 2(4)
timers.
4.
“3 Pole-B”: In this mode, the autorecloser is initiated for any type of fault and starts the
AR 3-P DEAD TIME 1
for the first
shot. If the initiating signal is
AR 3P TD INIT
the scheme starts
AR 3-P DEAD TIME 2
for the first shot. If two or more shots
are enabled, the second, third, and fourth shots are always three-phase and start the
AR 3-P DEAD TIME 2(4)
timers.
BASIC RECLOSING OPERATION:
Reclosing operation is determined primarily by the
AR MODE
and
AR BKR SEQUENCE
settings. The reclosing sequences are
started by the initiate inputs. A reclose initiate signal will send the scheme into the reclose-in-progress (RIP) state, asserting
the
AR RIP
FlexLogic™ operand. The scheme is latched into the RIP state and resets only when an
AR CLS BKR 1
(autore-
close breaker 1) or
AR CLS BKR 2
(autoreclose breaker 2) operand is generated or the scheme goes to the Lockout state.
The dead time for the initial reclose operation will be determined by either the
AR 1-P DEAD TIME
,
AR 3-P DEAD TIME 1
, or
AR
3-P DEAD TIME 2
setting, depending on the fault type and the mode selected. After the dead time interval the scheme will
assert the
AR CLOSE BKR 1
or
AR CLOSE BKR 2
operands, as determined by the sequence selected. These operands are
latched until the breaker closes or the scheme goes to Reset or Lockout.
STATE
CHARACTERISTICS
Enabled
Scheme is permitted to operate
Disabled
Scheme is not permitted to operate
Reset
Scheme is permitted to operate and shot count is reset to 0
Reclose in progress
Scheme has been initiated but the reclose cycle is not finished (successful or not)
Lockout
Scheme is not permitted to operate until reset received
Table 5–24: AUTORECLOSE PROGRAMS
MODE
AR MODE
FIRST SHOT
SECOND SHOT
THIRD SHOT
FOURTH SHOT
SINGLE-
PHASE
FAULT
MULTI-
PHASE
FAULT
SINGLE-
PHASE
FAULT
MULTI-
PHASE
FAULT
SINGLE-
PHASE
FAULT
MULTI-
PHASE
FAULT
SINGLE-
PHASE
FAULT
MULTI-
PHASE
FAULT
1
1 & 3 POLE
1 POLE
3 POLE
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
2
1 POLE
1 POLE
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3
3 POLE-A
3 POLE
LO
3 POLE or
LO
LO
3 POLE or
LO
LO
3 POLE or
LO
LO
4
3 POLE-B
3 POLE
3 POLE
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
3 POLE or
LO
Summary of Contents for UR series
Page 2: ......
Page 4: ......
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 ...