Technical Data
4.18 Automatic Reclosing System 79
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
518
4.18
Automatic Reclosing System 79
Number of Reclosures
0 to 9 (separated for phase and ground)
Cycles 1 to 4 can be adjusted individually
The following Protective Functions initiate the AR 79
(no 79 start / 79 start / 79 blocked)
50-1, 50-2, 50-3, 51, 67-1, 67-2, 67-TOC, 50N-1, 50N-2,
50N-3, 51N,
67N-1, 67N-2, 67N-TOC, sens. ground fault detection,
unbalanced load, binary input
Blocking of 79 by
Pick up of protective elements for which 79 blocking is
set (see above)
three phase pickup (optional)
Binary input
last trip command after the reclosing cycle is complete
(unsuccessful reclosure)
Trip command from the breaker failure
Opening the circuit breaker without 79
External CLOSE Command
Breaker failure monitoring
Dead Time T
Dead
(separate for phase and ground and individual for
cycles 1 to 4)
0.01 s to 320.00 s
Increments 0.01 s
Extension of Dead Time
Using binary input with time monitoring
Blocking Duration for Manual-CLOSE Detection T
Blk
Manual Close
0.50 s to 320.00 s or
∞
Increments 0.01 s
Blocking Duration after Manual Close T
Blocking Time
0.50 s to 320.00 s
Increments 0.01 s
Blocking Duration after Dynamic Blocking T
Blk Dyn
0.01 s to 320.00 s
Increments 0.01 s
Start Signal Monitoring Time T
Start Monitor
0.01 s to 320.00 s or
∞
Increments 0.01 s
Circuit Breaker Monitoring Time T
CB Monitor
0.10 s to 320.00 s
Increments 0.01 s
Maximum Dead Time Extension T
Dead Exten
0.50 s to 320.00 s or
∞
Increments 0.01 s
Start delay of dead time
using binary input with time monitoring
Max. start delay of dead time
T
DEAD DELAY
0.0 s to 1800.0 s or
∞
Increments
1.0 s
Operating time T
Operat
0.01 s to 320.00 s or
∞
Increments 0.01 s
The following protection functions can be influenced
by the automatic reclosing function individually for
the cycles 1 to 4 (setting value T=T/ instantaneous
T=0/ blocked T=infinite):
50-1, 50-2, 50-3, 51, 67-1, 67-2, 67-TOC, 50N-1, 50N-2,
50N-3, 51N,
67N-1, 67N-2, 67N-TOC
Additional Functions
Lockout (Final Trip)
Circuit breaker monitoring using breaker auxiliary con-
tacts,
Synchronous closing (optionally with integrated or exter-
nal synchrocheck, 7SJ64 only)
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