Breaker Monitoring; Breaker Status Reporting - Basler BE1-11g Instruction Manual

9424200994 Rev U 227

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, the 25A function, and the 52TCM
function. The breaker status logic block is shown in Figure 156.
Figure 156. Breaker Status Logic Block
BESTlogic™Plus Settings for Breaker Status
Since the BE1-11g 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 85 summarizes the BESTlogicPlus settings for Breaker Status.
Table 85. 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 157. To view breaker status at the front-panel display, navigate to
Metering Explorer, Status, Breaker Status.
Figure 157. 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 BE1-11g counter value to be matched to an existing
mechanical cyclometer on a breaker mechanism. Write access to the reports functions must be gained to
BE1-11g Breaker Monitoring