Functions
2.1 General
SIPROTEC, 7SD80, Manual
E50417-G1140-C474-A1, Release date 09.2011
46
Note
For CB Test and automatic reclosure the CB auxiliary contact status derived with the binary inputs >CB1 ... No.
371, 410 and 411) are relevant for the circuit-breaker test and for automatic reclosure to be able to indicate the
circuit-breaker position. The other binary inputs >CB ... (no. 379 and 380) are used to detect the status of the
line (address 1134) and to reset the trip command (address 1135). Address 1135 is also used by other pro-
tection functions, e.g. switching on overcurrent. For applications with 2 circuit breakers per feeder (1.5 circuit-
breaker systems or ring bus), the binary inputs >CB1... must be connected to the correct circuit breaker. The
binary inputs >CB... then need the correct signals for detecting the circuit-breaker status. In certain cases, an
additional CFC logic may be necessary.
For commands via the integrated control (local control, DIGSI, serial interface) address 1152 Man.Clos.
Imp. determines whether a close command via the integrated control function should be treated by the pro-
tection regarding the MANUAL CLOSE (like instantaneous re-opening when switching onto a fault). This
address also informs the device to which switchgear this applies. You can select from the switching devices
which are available to the integrated control. Select the circuit breaker which operates for manual closure and,
if required, for automatic reclosure (usually Q0). If none is set here, a CLOSE command via the control will not
generate a MANUAL CLOSE impulse for the protection function.
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