Siemens siprotec 7SA522, User Manual

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