8-18
Breaker/Recloser Monitor, Battery System Monitor,
Date Code 990430
Metering, and Load Profile Functions
SEL-351P Manual Técnico
SEL
OGIC
Control Equation to assert an output contact or perform other control functions, if
desired, or set to generate a row in the SER report.
Battery Load Test via Serial Port
You can initiate a battery load test via the serial communication port by sending the BTT NOW
command. The SEL-351P responds with one of the following results:
1. If the battery monitor/charger has a problem, the following message is displayed:
Battery Charger Board FAILED
The BATTERY PROBLEM LED already would be illuminated for this condition.
The battery load test is not performed for the execution of the BTT NOW
command.
2. If the battery is damaged or disconnected (it cannot charge or discharge), the
following message is displayed:
Battery failed or not present
The BATTERY PROBLEM LED already would be illuminated for this condition.
The battery load test is not performed for the execution of the BTT NOW
command.
3. If the battery is charging or discharging, the battery load test proceeds, and the
following message is displayed:
Battery test initiated. Duration 5 seconds
.
.
.
.
.
Battery test state is: OK/FAILED
The periods appear on each consecutive line at each second of the 5-second
battery load test. At the end of the test, OK or FAILED is displayed. If the
battery fails the 1-A load test (same criterion as described in the preceding
Automatic Battery Load Test
subsection), the BATTERY PROBLEM LED
illuminates and stays illuminated until the next battery load test is successful. The
“discharge test failure” Relay Word bit
DTFAIL
also asserts. Use this DTFAIL in
a SEL
OGIC
Control Equation to assert an output contact or perform other control
functions, if desired, or set to generate a row in the SER report.
Execute the BTT command to see how much time remains until the next automatic battery
discharge test. If the battery is charging or discharging, the following message is displayed:
Battery test state is: OK/FAILED
Time until next battery test: XX hours
The “next battery test” is the automatic load test described in the preceding
Automatic Battery
Load Test
subsection.
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