GE C60, Instruction Manual

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5-226 C60 Breaker Protection System GE Multilin
5.7 CONTROL ELEMENTS 5 SETTINGS
5
BRK1
time greater than the maximum expected breaker close time plus at least 150 ms with a "Protection AND CB"
mode.
• 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. If the operand assigned to this setting and the AR
3P
INIT
setting are asserted simultaneously, then autoreclose will not activate the first and second shot timers at the same
time. Instead, the priority is given to the
AR 3P INIT
operand.
• 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 indicates
breaker status.
• AR 3-P DEAD TIME 1 : This is the dead time following the first three pole trip. This intentional delay can be used for a
high-speed three-pole autoreclose. However, it should be set longer than the estimated de-ionizing time following the
three-pole trip.
• AR 3-P DEAD TIME 2 : This is the dead time following the second three-pole trip or initiated by the
AR 3P TD INIT
input.
This intentional delay is typically used for a time delayed three-pole autoreclose (as opposed to high speed three-pole
autoreclose).
• AR 3-P DEAD TIME 3 : This setting represents the dead time following the third three-pole trip.
• AR 3-P DEAD TIME 4 : This setting represents the dead time following the third three-pole trip.
• AR EXTEND DEAD T 1 : This setting selects an operand that will adapt the duration of the dead time for the first shot
to the possibility of non-simultaneous tripping at the two line ends. Typically this is the operand set when the communi-
cation channel is out of service
• AR DEAD TIME 1 EXTENSION : This timer is used to set the length of the dead time 1 extension for possible non-
simultaneous tripping of the two ends of the line.
• AR RESET : This setting selects the operand that forces the autoreclose scheme from any state to reset. Typically this
is a manual reset from lockout, local or remote.
• AR RESET TIME : A reset timer output resets the recloser following a successful reclosure sequence. The setting is
based on the breaker time which is the minimum time required between successive reclose sequences.
• AR BKR CLOSED: This setting selects an operand that indicates that the breakers are closed at the end of the reset
time and the scheme can reset.
• AR BLOCK : This setting selects the operand that blocks the autoreclose scheme (it can be a sum of conditions such
as: time delayed tripping, breaker failure, bus differential protection, etc.). If the block signal is present before autore-
close scheme initiation the
AR DISABLED
FlexLogic operand will be set. If the block signal occurs when the scheme is
in the RIP state the scheme will be sent to lockout.
• AR PAUSE : The pause input offers the ability to freeze the autoreclose cycle until the pause signal disappears. This
may be done when a trip occurs and simultaneously or previously, some conditions are detected such as out-of step or