GE P4A Technical Manual page 763

P54A/B/C/E
MENU TEXT
This setting determines which auto-reclose modes are permitted for the circuit breaker : single phase (AR 1P) only, both single phase and
three phase (AR 1/3P), three phase only (AR 3P), or the auto-reclosing mode is controlled by opto input signals (AR Opto) mapped via DDB's
(1497) AR Mode 1P and (1498) AR Mode 3P.
AR Mode
Setting determines which auto-reclose modes are permitted for leader /follower circuit breakers.
The auto-reclose scheme provides single phase or three phase auto-reclosing of a feeder switched by two circuit breakers. The two circuit
breakers are normally arranged to reclose sequentially with one, designated the 'Leader' circuit breaker, reclosing after a set dead time
followed, if the leader CB remains closed, by the second circuit breaker, designated the 'Follower' circuit breaker after a further delay
(follower time).
L1P F1P : both leader and follower are configured for single phase auto-reclosing.
L1P F3P : the leader is configured for single phase auto-reclosing, whilst the follower is configured for three phase auto-reclosing.
L3P F3P : both leader and follower are configured for three phase auto-reclosing.
L1/3P F1/3P : both leader and follower are configured for either single phase or three phase auto-reclosing.
L1/3P F3P : the leader is configured for single phase or three phase auto-reclosing, while the follower is configured for three phase auto-
reclosing only.
AR Opto : the auto-reclosing mode of the leader and follower are controlled by opto input signals (Opto) mapped via DDBs (1497) Lead AR 1P,
(1498) Lead AR 3P, (1409) Follower AR 1P, and (1410) Follower AR 3P.
Lead/Foll ARMode
Setting which determines how the preferred leader CB is selected - can be by menu setting, HMI command or by designated opto input.
If Leader Select By: is set to Leader by Opto, then preferred leader CB is :-
• CB1 if input DDB(1408) CB2 Lead is low, or
• CB2 if input DDB (1408) CB2 Lead is high.
If Leader Select By: is set to Leader by Control, then user control setting CTRL CB2 Lead under CB CONTROL in the IED menu determines the
preferred leader by applying set/reset commands (If Set then CB2 is leader ,If Reset then CB1 is leader).
Dynamic F/L
Dynamic F/L = Dynamic change from follower to leader status during an auto-reclose cycle if the leader CB fails to close.
If setting BF if Lfail Cls is set to Disabled, then setting Dynamic F/L becomes visible and determines whether the follower CB should assume
leader status and reclose immediately if the leader CB should fail to close, or whether it should continue as follower and reclose after the
Follower Time delay.
Dynamic F/L set to Enabled selects immediate follower reclose if the leader CB fails to close;
Dynamic F/L set to Disabled selects the follower to reclose after the Follower Time if leader CB fails to close.
AR Shots
This setting determines how many reclose attempts (shots) are permitted for any single fault incident before it is treated as persistent and
auto-reclosing is locked out. For example if AR Shots = 2, a second reclose attempt is initiated if the protection retrips during the reclaim
time following one reclose attempt, but locks out if the protection retrips during the reclaim time after a second reclose attempt.
AR Shots
This setting determines how many reclose attempts (shots) are permitted for any single fault incident before it is treated as persistent and
auto-reclosing is locked out. For example if AR Shots = 2, a second reclose attempt is initiated if the protection retrips during the reclaim
time following one reclose attempt, but locks out if the protection retrips during the reclaim time after a second reclose attempt.
AR Skip Shot 1
P54xMED-TM-EN-1
COL ROW DEFAULT SETTING
49 51 AR 3P
49 53 L 3P, F 3P
49 58 Disabled
49 59 1
49 59 1
49 5A Disabled
DESCRIPTION
AR 3P
AR Opto
[Indexed String]
AR 1P
AR 1/3P
AR 3P
AR Opto
AR 3P
AR Opto
[Indexed String]
L 1P, F 1P
L 1P, F 3P
L 3P, F 3P
L 1/3P, F 1/3P
L 1/3P, F 3P
AR Opto
[Indexed String]
Disabled
Enabled
[Indexed String]
From 1 to 4 in steps of 1
[Unsigned Integer (16 bits)]
From 1 to 4 in steps of 1
[Unsigned Integer (16 bits)]
Disabled
Enabled
[Indexed String]
Appendix B - Settings and Signals
AVAILABLE OPTIONS
B197