5-200
L30 Line Current Differential System
GE Multilin
5.7 CONTROL ELEMENTS
5 SETTINGS
5
•
The ‘Incomplete Sequence’ timer times out.
The recloser will be latched in the Lockout state until a ‘reset from lockout’ signal is asserted, either from a manual close of
the breaker or from a manual reset command (local or remote). The reset from lockout can be accomplished by operator
command, by manually closing the breaker, or whenever the breaker has been closed and stays closed for a preset time.
After the dead time elapses, the scheme issues the close signal. The close signal is latched until the breaker closes or the
scheme goes to Lockout.
A reset timer output resets the recloser following a successful reclosure sequence. The reset time is based on the breaker
‘reclaim time’ which is the minimum time required between successive reclose sequences.
SETTINGS:
•
AR1 INITIATE:
Selects the FlexLogic™ operand that initiates the scheme, typically the trip signal from protection.
•
AR1 BLOCK:
Selects the FlexLogic™ operand that blocks the autoreclosure initiate (it could be from the breaker fail-
ure, bus differential protection, etc.).
•
AR1 MAX NUMBER OF SHOTS:
Specifies the number of reclosures that can be attempted before reclosure goes to
“Lockout” because the fault is permanent.
•
AR1 REDUCE MAX TO 1(3):
Selects the FlexLogic™ operand that changes the maximum number of shots from the
initial setting to 1, 2, or 3, respectively.
•
AR1 MANUAL CLOSE:
Selects the logic input set when the breaker is manually closed.
•
AR1 MNL RST FRM LO:
Selects the FlexLogic™ operand that resets the autoreclosure from Lockout condition. Typi-
cally this is a manual reset from lockout, local or remote.
•
AR1 RESET LOCKOUT IF BREAKER CLOSED:
This setting allows the autoreclose scheme to reset from Lockout if
the breaker has been manually closed and stays closed for a preset time. In order for this setting to be effective, the
next setting (
AR1 RESET LOCKOUT ON MANUAL CLOSE
) should be disabled.
•
AR1 RESET LOCKOUT ON MANUAL CLOSE:
This setting allows the autoreclose scheme to reset from Lockout
when the breaker is manually closed regardless if the breaker remains closed or not. This setting overrides the previ-
ous setting (
AR1 RESET LOCKOUT IF BREAKER CLOSED
).
•
AR1 BLK TIME UPON MNL CLS:
The autoreclose scheme can be disabled for a programmable time delay after the
associated circuit breaker is manually closed. This prevents reclosing onto a fault after a manual close. This delay
must be longer than the slowest expected trip from any protection not blocked after manual closing. If no overcurrent
trips occur after a manual close and this time expires, the autoreclose scheme is enabled.
•
AR1 DEAD TIME 1 to AR1 DEAD TIME 4:
These are the intentional delays before first, second, third, and fourth
breaker automatic reclosures (1st, 2nd, and 3rd shots), respectively, and should be set longer than the estimated
deionizing time following a three pole trip.
•
AR1 ADD DELAY 1:
This setting selects the FlexLogic™ operand that introduces an additional delay (Delay 1) to the
initial set Dead Time (1 to 4). When this setting is “Off”, Delay 1 is by-passed.
•
AR1 DELAY 1:
This setting establishes the extent of the additional dead time Delay 1.
•
AR1 ADD DELAY 2:
This setting selects the FlexLogic™ operand that introduces an additional delay (Delay 2) to the
initial set Dead Time (1 to 4). When this setting is “Off”, Delay 2 is by-passed.
•
AR1 DELAY 2:
This setting establishes the extent of the additional dead time Delay 2.
•
AR1 RESET LOCKOUT DELAY:
This setting establishes how long the breaker should stay closed after a manual
close command, in order for the autorecloser to reset from Lockout.
•
AR1 RESET TIME
: A reset timer output resets the recloser following a successful reclosure sequence. The setting is
based on the breaker ‘reclaim time’ which is the minimum time required between successive reclose sequences.
•
AR1 INCOMPLETE SEQ TIME
: This timer defines the maximum time interval allowed for a single reclose shot. It is
started whenever a reclosure is initiated and is active when the scheme is in the ‘reclose-in-progress’ state. If all condi-
tions allowing a breaker closure are not satisfied when this time expires, the scheme goes to “Lockout”.
This timer must be set to a delay less than the reset timer.
NOTE
Summary of Contents for L30
Page 10: ...x L30 Line Current Differential System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 L30 Line Current Differential System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 370: ...5 244 L30 Line Current Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 464: ...A 10 L30 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 600: ...C 30 L30 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 610: ...D 10 L30 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 622: ...E 12 L30 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 634: ...F 12 L30 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 644: ...x L30 Line Current Differential System GE Multilin INDEX ...
