Sel 411L - Page 491

P.4.37
Date Code 20151029 Protection Manual SEL-411L Relay
Autoreclosing and Synchronism-Check
Autoreclose Logic Diagrams
Figure 4.14 Two Circuit Breakers Three-Pole Cycle State (79CY3) When E79 := Y (continued)
D
12
3
6
9
Is 79BRCT Asserted?
Determine
Active Breakers
Determine Leader
Timing
3PARC
3PARC
To Beginning
of 79CY3
*Send Breakers (not already
in the Lockout State; BKnL0)
to the Reset State (BKnRS)
Breaker #1
Ready State (BK1RS)
Breaker #2
Ready State (BK2RS)
No
Yes
NBK1
LEADBK1
LEADBK2
NBK2
Timed Out
Reclaim Timer
(3PRCD)
Breaker Open
Lockout
(BKnLO)