High-Current Switch-On-To-Fault Protection - Siemens siprotec 7SA522 User Manual

10.10 High-Current Switch-On-To-Fault Protection

Pick-up
Times
10.11 Automatic Re-closure Function
Automatic
Re-closures
Adaptive Dead
Time
7SA522 Manual
C53000-G1176-C119-2
High current pick-up
Drop-out to pick-up ratio
Pick-up tolerance
Shortest tripping time
Number of re-closures
Operating modes
Control
Action times
Initiation possible without pick-up
and action time
Different dead times before
re-closure can be set for all
operating modes and cycles
Dead times after evolving fault
recognition
Reclaim time after reclosure
Blocking time after dynamic blocking 0.5
Blocking time after manual closing 0.50 s to 300.00 s ; 0
Start signal monitoring time
Circuit-breaker supervision time
Operating modes
Action time
Initiation possible without pick-up
and action time
Maximum dead time
Voltage measurement dead-line
or bus
I>>> 1.00 A to 25.00 A
approx. 0.90
≤ 3 % of set value or 1% of I
approx. 13 ms
max. 8,
first 4 with individual settings
1-pole, 3-pole or 1-/3-pole
with pick-up or trip command
0.01 s to 300.00 s; ∞
(steps 0.01 s)
0.01 s to 1800.00 s; ∞
(steps 0.01 s)
0.01 s to 1800.00 s;
(steps 0.01 s)
0.50 s to 300.00 s
(steps 0.01 s)
(steps 0.01 s)
0.01 s to 300.00 s
(steps 0.01 s)
0.01 s to 300.00 s
(steps 0.01 s)
with voltage measurement or
with close command transmission
0.01 s to 300.00 s; ∞
(steps 0.01 s)
0.50 s to 3000.00 s; ∞
(steps 0.01 s)
2 V to 70 V (phase-to-earth)
(steps 1 V)
Technical Data
1
) (steps 0.01 A)
N
10-23