4 Technical Data
446
7SA522 Manual
C53000-G1176-C155-3
Times
Emergency Operation
Shortest trip time Approx. 17 ms (50 Hz) / 15 ms (60 Hz) with fast relay and
approx. 11 ms (50 Hz) / 10 ms (60 Hz) with high-speed relay
Drop-off time Approx. 30 ms
Stage timers 0.00 s to 30.00 s; ∞
for all zones; separate time setting
possibilities for single-phase and
multi-phase faults for the zones Z1,
Z2, and Z1B
Increments 0.01 s
Time expiry tolerances 1 % of setting value or 10 ms
The set time is a pure delay time.
In case of measured voltage failure, e.g. voltage transformer mcb trip see Subsection 4.11 “Time Overcurrent Protec-
tion”
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