Functions
6-2997SA6 Manual
C53000-G1176-C156-2
General Trip All trip signals from the protection functions are combined with an OR function and
cause the alarm “
Relay TRIP”. This can be allocated to LED or output relay.
Reset of the
Trip Command
Once a trip command is initiated, it is phase segregatedly latched (in the event of
three-pole tripping for each of the three poles) (refer to Figure 6-152). At the same time
a minimum trip command duration
TMin TRIP CMD is started. This ensures that the
trip command is output for a sufficiently long time to the circuit breaker even if the trip-
ping protection function resets very rapidly. Only after the last protection function has
reset (no function is picked up any more)
AND the minimum trip command duration
has expired, the trip commands can reset.
A further condition for the reset of the trip command is that the circuit breaker has
opened, in the event of single-pole tripping the relevant circuit-breaker pole. In the
function control of the device this is checked by means of the circuit-breaker position
feedback (Subsection 6.22.2) and the current flow.
The residual current
PoleOpenCurrent that is certainly undershot when the circuit
breaker pole is open is set in address
1130A.Address1135 Reset Trip CMD de-
termines under which conditions a trip command is reset. If
CurrentOpenPole is
set, the trip command is reset as soon as the current disappears. It is important that
thevaluesetinaddress
1130A PoleOpenCurrent (see above) is undershot. If Cur-
rent AND CB
is set, the circuit-breaker auxiliary contact must send a message that
the circuit breaker is open. It is a prerequisite for this setting that the position of the
auxiliarycontactsisallocatedviaabinaryinput.
Figure 6-152 Latching and reset of the trip command
T
0240TMin TRIP CMD
S
R
Q
&
TRIP L1
from the protection functions
≥1
L1 open
Relay TRIP L1
&
FNr 507
1130
1135
only I<
CBaux and I<
Reset Trip CMD
from Figure 6-151
I
L1
with CBaux and
S
R
Q
TRIP L2
L2 open
&
from Figure 6-151
I
L2
with CBaux and
S
R
Q
TRIP L3
L3 open
&
from Figure 6-151
I
L3
with CBaux and
Relay TRIP L2
FNr 508
Relay TRIP L3
FNr 509
Pole Open Current <
Pole Open Current <
Pole Open Current <
Pole Open Current <
Pole Open Current
Pole Open Current
Pole Open Current
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