Siemens SIPROTEC 7ST6, Руководство пользователя, Страница: 276 / 356

4 Technical Data
276
7ST6 Manual
E50417-G1176-C251-A3
4.6 Circuit Breaker Failure Protection (optional)
Circuit Breaker Monitoring
Current flow monitoring For I
N
= 1 A 0.05 A to 20.00 A Increments 0.01 A
For I
N
= 5 A 0.25 A to 100.00 A
Dropout to pickup ratio Approx. 0.95
Tolerance For I
N
= 1 A 5 % of the set value or 0.01 A
For I
N
= 5 A 5 % of the set value or 0.05 A
Pickup time Approx. 1/4 cycle with measured
values present
Dropout time <= 3/4 cycle with sinusoidal mea-
sured values
<= 1 1/4 cycles max.
Delay times 0.10 s to 10.00 s;
∞
Increments 0.01 s
Tolerance 1 % of setting value or 10 ms
www
. ElectricalPartManuals
. com