Basler Electric BE1-11t - Manual (Page 177)

9424200995 Rev H 165
Breaker Monitoring
Breaker monitoring helps manage equipment inspection and maintenance expenses by providing
extensive monitoring and alarms for the circuit breaker. Breaker monitoring functions include breaker
status and operations counter reporting, fault current interruption duty monitoring and trip-speed
monitoring. Each function can be set up as a programmable alarm. The
Alarms chapter has more
information about the use of programmable alarms. The breaker trip circuit voltage and continuity monitor
is a related function and is described in the
Trip Circuit Monitor (52TCM) chapter.
Breaker Status Reporting
The breaker status monitoring function monitors the position of the breaker for reporting purposes.
Opening breaker strokes are also counted and recorded in the breaker operations counter register. Circuit
breaker status is also used by the 50BF function, the 60FL function, and the 52TCM function. The
breaker status logic block is shown in Figure 120.
Figure 120. Breaker Status Logic Block
BESTlogic
™Plus Settings for Breaker Status
Since the BE1-11t is completely programmable, it is necessary to program which logic variable will
monitor breaker status. Breaker status is programmed using BESTCOMSPlus
®. Use the Settings Explorer
to open the BESTlogicPlus Programmable Logic tree branch and select the Breaker Status logic block
from the list of Elements. Use the drag and drop method to connect a variable or group of variables to the
input. Refer to the
BESTlogicPlus chapter for more information on setting BESTlogicPlus programmable
logic.
Table 61 summarizes the BESTlogicPlus settings for Breaker Status.
Table 61. BESTlogicPlus Settings for Breaker Status
Setting Range/Purpose Default
Breaker Status True when the breaker is closed (e.g., 52a logic). 0
Retrieving Breaker Status and Operation Counter Information
BESTCOMSPlus Navigation Path: Metering Explorer, Status, Breaker Status
HMI Navigation Path: Metering Explorer, Status, Breaker Status
Breaker status can be viewed through BESTCOMSPlus, the front-panel display, and the web page
interface.
To view breaker status using BESTCOMSPlus, use the Metering Explorer to open the Status, Breaker
Status screen shown in Figure 121. To view breaker status at the front-panel display, navigate to
Metering Explorer, Status, Breaker Status.
Figure 121. Breaker Status Screen
The number of breaker operations can be read at the front-panel display. The counter value can be
adjusted using the Edit key. This allows the BE1-11t counter value to be matched to an existing
mechanical cyclometer on a breaker mechanism. Write access to the reports functions must be gained to
BE1-11t Breaker Monitoring