4.12 Instantaneous High-Current Switch-onto-Fault Protection
467
7SA522 Manual
C53000-G1176-C155-3
4.12 Instantaneous High-Current Switch-onto-Fault Protection
Pickup
Times
High current pick-up I>>> for I
N
= 1 A 1.00 A to 25.00 A Increments 0.01 A
for I
N
= 5 A 5.00 A to 125.00 A
Drop-off to pick-up ratio Approx. 90 %
Pick-up tolerance 3 % of set value or 1 % of I
N
Shortest trip time Approx. 13 ms for fast relays and
Approx 8 ms for high-speed relays
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