Functions
2.8 Function Control
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
153
Please note that Figure 2-60 shows the complete logic for all connection alternatives. For each particular ap-
plication, only a portion of the inputs is used as described above.
The eight output signals of the circuit breaker position logic can be processed by the individual protective and
supplementary functions. The output signals are blocked if the signals transmitted from the circuit breaker are
not plausible: for example, the circuit breaker cannot be open and closed at the same time. Furthermore, no
current can flow over an open breaker contact.
The evaluation of the measuring quantities is according to the local conditions of the measuring points (see
Section 2.1.5.1 at margin heading „Circuit Breaker Status“).
The phase currents are available as measuring quantities. A flowing current excludes that the circuit breaker
is open (exception: A fault between current transformer and circuit breaker). If the circuit breaker is closed, it
may, however, still occur that no current is flowing. The decisive setting for the evaluation of the measuring
quantities is
PoleOpenCurrent
(address
1130
) for the presence of the currents.
Figure 2-60
Circuit breaker position logic
Summary of Contents for Siprotec 7VK61
Page 8: ...Preface SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 8 ...
Page 14: ...Contents SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 14 ...
Page 316: ...Literature SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 316 ...
Page 328: ...Glossary SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 328 ...
