Automatic Reclosing System 79 - Siemens SIPROTEC 7SJ61 Manual

4.15

Automatic Reclosing System 79

Number of Reclosures
The following Protective Functions initiate the AR
79 (no 79 start / 79 start / 79 blocked)
Blocking of 79 by
Dead Time T
(separate for phase and ground and individual for
shots 1 to 4)
Extension of Dead Time
Blocking Duration for Manual-CLOSE Detection
T
Blk Manual Close
Blocking Duration after Manual Close T
Blocking Duration after Dynamic Blocking T
Start Signal Monitoring Time T
Circuit Breaker Monitoring Time T
Maximum Dead Time Extension T
Start delay of dead time
Max. start delay of dead time T
Operating time T
The following protection functions can be influ-
enced by the automatic reclosing function individ-
ually for the cycles 1 to 4 (setting value T=T/ in-
stantaneous T=0/ blocked T=infinite):
Additional Functions
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
Dead
Start Monitor
CB Monitor
Dead Exten
Dead delay
Operat
0 to 9 (segregated into phase and ground settings)
Cycles 1 to 4 can be adjusted individually
50-3, 50-2, 50-1, 51, 50N-3, 50N-2, 50N-1, 51N,
Sensitive Ground Fault Protection, 46, Binary Inputs
Pickup of protective elements for which 79 blocking is set
(see above)
Three phase pickup (optional)
Binary Input
Last TRIP command after the reclosing cycles is complete
(unsuccessful reclosing)
CLOSE Command of the breake failure protection
Opening the circuit breaker without 79
External CLOSE Command
Breaker failure monitoring
0.01 s to 320.00 s
Using binary input with time monitoring
0.50 s to 320.00 s or ∞
0.50 s to 320.00 s
Blocking Time
0.01 s to 320.00 s
Blk Dyn
0.01 s to 320.00 s or ∞
0.10 s to 320.00 s
0.50 s to 320.00 s or ∞
Using binary input with time monitoring
0.0 s to 1800.0 s or ∞
0.01 s to 320.00 s or ∞
50-3, 50-2, 50-1, 51,50N-3, 50N-2, 50N-1, 51N
Lockout (Final Trip)
Circuit breaker monitoring using breaker auxiliary contacts
Technical Data
4.15 Automatic Reclosing System 79
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 1.0 s
Increments 0.01 s
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