ABB COM600 series, User'S & Technical Manual, Page: 47 / 60

status monitoring can be described by using a module diagram. All the modules in the
diagram are explained in the next sections.
functional_module_diagram_for_monitoring_circuit_breaker_status.png
Figure 5.4.1-1 Functional module diagram for monitoring circuit breaker status
Phase current check
This module compares the three phase RMS currents to the setting RMS Current Level.
If the current in a phase exceeds the set level, information about the phase is reported to
the contact position indicator module.
Contact position indicator
Contact position indications are available in the main application.
Breaker contact travel time 5.4.2.
The Breaker contact travel time module calculates the breaker contact travel time for
the closing and opening operation. The operation of the breaker contact travel time
measurement can be described with a module diagram. All the modules in the diagram
are explained in the next sections.
functional_module_diagram_for_counting_circuit_breaker_operations.png
Figure 5.4.2-1 Functional module diagram for breaker contact travel time
Traveling time calculator
The travel time can be calculated using two different methods based on the setting Travel
time Clc mode.
When the setting Travel time Clc mode is “From Pos to Pos”, the contact travel time of
the breaker is calculated from the time between auxiliary contacts' state change. The
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COM600 series 5.1 1MRS758734
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