[dwzecbc1p2-161013, 2, en_US]
Figure 10-4 Structure of the Function
Test Procedure
The following conditions must be satisfied before the circuit-breaker test can start:
²
If a circuit-breaker auxiliary contact reports the position of the breaker pole to the device via the binary
inputs of the signal Position, the test cycle is not initiated unless the circuit breaker is closed.
²
If the circuit-breaker auxiliary contact has not been routed, you must ensure that the circuit breaker is
closed.
²
The circuit breaker must be ready for an open-closed cycle or an open-only cycle (indication >Ready).
²
A protection function must not have been picked up in the circuit-breaker protection function group
responsible for the circuit breaker.
[scCBTest3p, 1, en_US]
Figure 10-5 Circuit-Breaker Test Parameters
Figure 10-6 shows the chronological sequence of an open-closed cycle as an example. If you have activated
the Open only option, the close command is not executed and the dead time not taken into consideration.
If a circuit-breaker auxiliary contact is connected, the function waits for the indication circuit breaker Posi-
tion = open after the trip command is generated. When the indication Position = open is received, the
close command is transmitted during an open-closed cycle after a dead time (parameter (_:6151:101)
Dead time). If the feedback from the circuit-breaker positions is not received within the maximum transmis-
sion time (Dead time + 2 · Output time + 5 s), the circuit-breaker test is aborted and considered to be
failed. The proper functioning of the circuit breaker is monitored via the feedback on the circuit-breaker posi-
tions.
Functional Tests
10.5 Circuit-Breaker Test
1068 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
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