2 Functions
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7SD610 Manual
C53000-G1176-C145-4
2.4 Breaker Intertrip and Remote Tripping
7SD610 allows to transmit a tripping command created by the local differential protec-
tion to the other end of the protected object (intertripping). Likewise, any desired
command of another internal protection function or of an external protection, monitor-
ing or control equipment can be transmitted for remote tripping.
The reaction when receiving such a command can be set individually for each device.
Commands are transmitted separately for each phase, so that a simultaneous single-
pole auto-reclosure is always possible, provided that devices and circuit breakers are
designed for single-pole tripping.
2.4.1 Function Description
Transmission
Circuit
The transmission signal can originate from two different sources (Figure 2-23). If the
parameter I-TRIP SEND is set to YES, each tripping command of the differential pro-
tection is routed immediately to the transmission function „ITrp.sen. L1“ to "...L3“ (in-
tertrip) and transmitted via the protection data interface and communication link.
Furthermore, it is possible to trigger the transmission function via binary inputs
(remote tripping). This can be done either separately for each phase via the input func-
tions „>Intertrip L1“, „>Intertrip L2“ and „>Intertrip L3“, or for all
phases together (three-pole) via the binary input function „>Intertrip 3pol“. The
transmission signal can be delayed with T-ITRIP BI and prolonged with T-ITRIP
PROL BI.
Figure 2-23 Logic diagram of the intertrip — transmission circuit
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