Figure. 5.3.8 - 103. Retrip and 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 counters for RETRIP and CBFP start 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 RETRIP signal is sent to the redundant trip coil. If the current is not
reduced within the set time limit, the function also sends a CBFP signal to the incomer breaker. If the
primary protection function clears the fault, both counters (RETRIP and CBFP) are reset as soon as the
measured current is below the threshold settings.
A
AQ
Q-T215
-T215
Instruction manual
Version: 2.04
147
