Figure. 5.3.2 - 78. CBFP when "Current" is the selected criterion.
When the current threshold setting of
I
set
and/or
I0
set
is exceeded, the current-based protection is
activated and the counter for CBFP starts calculating the set operating time. The tripping of the
primary protection stage is not monitored in this configuration. Therefore, if the current is not reduced
below the setting limit, a CBFP signal is sent to the incomer breaker. If the primary protection function
clears the fault, the counter for CBFP resets as soon as the measured current is below the threshold
settings.
A
AQ
Q-V211
-V211
Instruction manual
Version: 2.04
87