Functions
6-2337SA522 Manual
C53000-G1176-C119-2
In most cases it is sufficient to furnish the status of the circuit breaker with its auxiliary
contacts via a binary input to the device. This always applies if the circuit breaker is
only switched three-pole. Then the NO auxiliary contact of the circuit breaker is con-
nected to a binary input which must be configured to the input function ">CB 3p
Closed" (FNo. 379). The other inputs are then not used and the logic is restricted in
principle to simply passing of this input information on.
If the circuit breaker poles can be switched individually, and only a parallel connection
of the NO individual pole auxiliary contacts is available, the relevant binary input (BI)
is again allocated to the function “>CB 3p Open” (FNo. 380). The activation of the
binary input must occur during the low state (configured in the matrix).
The remaining inputs are again not used in this case.
If the circuit breaker poles can be switched individually, and the individual auxiliary
contacts are available, an individual binary input should be used for each auxiliary
contact if this is possible and if the device can and should trip single-pole. With this
configuration, the device can process the maximum amount of information. Three bi-
nary inputs are used for this purpose:
− “!&%$X[/” (FNo. ), for the auxiliary contact of pole L1,
− “!&%$X[/” (FNo. ), for the auxiliary contact of pole L2,
− “!&%$X[/” (FNo. ), for the auxiliary contact of pole L3,
The inputs FNo. 379 and FNo. 380 are not used in this case.
If the circuit breaker can be switched individually, two binary inputs are sufficient if both
the parallel as well as series connection of the auxiliary contacts of the three poles are
available. In this case, the parallel connection of the auxiliary contacts is routed to the
input function “>CB 3p Open” (FNo. 380) and the series connection is routed to the
input function “>CB 3p Closed” (FNo. 379).
Please note that Figure 6-125 shows the complete logic for all connection alternatives.
For each particular application, only a portion of the inputs is used as described above.
The 8 output signals of the circuit breaker position logic can be processed by the indi-
vidual protection and supplementary functions. The output signals are blocked if the
signals provided by the circuit breaker are not plausible e.g. the circuit breaker can not
be open and closed simultaneously. Furthermore, the detection of current flow has
priority to the circuit breaker open detection via auxiliary contacts.
For the recloser circuit breaker test function, separate binary inputs are available,
which should be treated the same and configured additionally if necessary. These
have a similar significance as the inputs described above and are marked with "&%
..." to distinguish them, i.e.:
− ">CB1 3p Closed" (FNo. 410) for the series connection of the NO auxiliary
contacts of the CB
− ">CB1 3p Open" (FNo. 411) for the series connection of the NC auxiliary
contacts of the CB
− ">CB1 Pole L1" (FNo. 366) for the auxiliary contact of pole L1
− ">CB1 Pole L2" (FNo. 367) for the auxiliary contact of pole L2
− ">CB1 Pole L3" (FNo. 368) for the auxiliary contact of pole L3
To Next Page
Loading...
