[lostrom1-030211-01.tif, 4, en_US]
Figure 7-10
Current-Flow Criterion
Circuit-Breaker Auxiliary-Contact Criterion
Settings allow you to specify whether the circuit-breaker auxiliary contacts are permitted for determining the
circuit-breaker position.
The double-point indication 3-pole position (from the Circuit-breaker function block) is used to deter-
mine whether all 3 poles of the circuit breaker are closed. With the 1/3-pole circuit breaker, the position is
determined pole-selectively via the double-point indications.
If the double-point indication is not routed, the output is an error message. Furthermore, the Health signal
changes to the state
Warning
.
The detection of a static disturbed position (not an intermediate position) has the effect that the circuit-
breaker auxiliary contact criterion is not used (the internal signal Aux.co.crit.: CB Clsd is disabled).
Protection and Automation Functions
7.1 Circuit-Breaker Failure Protection
SIPROTEC 5, High-Voltage Bay Controller, Manual 523
C53000-G5040-C015-9, Edition 11.2017
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