Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1
According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 90 Hz
Expanded tolerances
f < 10 Hz
f > 90 Hz
Inactive
Tolerances
Current
5 % of the setting value or 50 mA
Overcurrent release of the circuit breaker (for busbar-
protection tripping)
5 % of the setting value or 50 mA
k factor
5 % of the setting value
Times
5 % of the setting value or 50 ms
Remanence of the current transformers
Stable for external errors with up to 80 % remanence
Technical Data
11.3 Busbar Differential Protection
914
SIPROTEC 5, Low-Impedance Busbar Protection, Manual
C53000-G5040-C019-C, Edition 04.2021
