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1MAC050144-MB C
Section 6
Supervision functions
615 series ANSI
419
Technical Manual
Figure 213:
Functional module diagram for calculating inactive days and alarm for
circuit breaker operation monitoring
Inactivity timer
The module calculates the number of days the circuit breaker has remained inactive, that
is, has stayed in the same open or closed state. The calculation is done by monitoring the
states of the
POSOPEN
and
POSCLOSE
auxiliary contacts.
The inactive days is available through the Monitored data view. It is also possible to set
the initial inactive days by using the parameter.
Alarm limit check
When the inactive days exceed the limit value defined with the setting, the alarm is
initiated. The time in hours at which this alarm is activated can be set with the parameter
as coordinates of UTC. The alarm signal can be blocked by activating the binary input
BLOCK
.
6.1.4.3
Breaker contact travel time
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 by using a module diagram. All the modules in the diagram
are explained in the next sections.
Figure 214:
Functional module diagram for breaker contact travel time
Traveling time calculator
The contact travel time of the breaker is calculated from the time between auxiliary
contacts' state change. The open travel time is measured between the opening of the
POSCLOSE
auxiliary contact and the closing of the
POSOPEN
auxiliary contact. Travel
time is also measured between the opening of the
POSOPEN
auxiliary contact and the
closing of the
POSCLOSE
auxiliary contact.
Содержание 615 Series ANSI
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Страница 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
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Страница 707: ...Section 15 1MAC050144 MB C Applicable standards and regulations 700 615 series ANSI Technical Manual ...
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