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OPERATION AND MAINTENANCE, MODULE B1
2.4.2
Battery Test
Every 6 months, and always before visiting a BRU3 site for regular
maintenance work, it is recommended to perform a battery test. The battery test,
which is described below, is executed from NODOP or from OM at the NCC.
Description
The Battery Test is performed by switching the node power supply to battery
power supply and measuring the time for the battery to get discharged below a
certain limit. When the limit is reached, the node power is switched back to
normal power supply and an alarm is sent to the NCC.
Requirements
The time for the battery test is defined by the operator.
Test procedure
1.
Start the test by the OM/NODOP command ACTIVATE
BATTERY_TEST. The node power supply is switched to battery power
and the time for the batteries to get discharged is measured.
When the batteries are discharged, the node power is switched back to
normal power supply and an alarm is sent to the NCC.
2.
Read the measured value on the display. The OM/NODOP command
SHOW BATTERY_TEST presents the result of both the current, and last
completed, battery test.
Recommended:
39xx: 30 min. (15 min. for the 6W version)
34xx and 38xx: 15 min.
3.
Check the result against the requirements specified.
4.
Replace the battery unit, if necessary.
Note!
The battery should be in operation for at least 60 hours before an
initial battery test may be performed for the first time after power-
up.
BRU3 MANUAL, Doc.no: 1543-ANNA 805 08 Uen Rev H, 2003-06-10
33 (60)
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