User Manual
Alarms
68P09255A57-2
Aug 2002
SC4812ET Optimization/ATP Manual Software Release R16.1.x.x
PRELIMINARY
3-98
Table 3-57: Minor Alarm
Step Action
1 Turn the Temperature Compensation Panel (TCP) power switch OFF. This will generate a minor
alarm. Verify that the minor alarm LED (amber) is illuminated on the Meter Alarm Panel and the
LMF reports this minor alarm.
2 Alarm condition will be reported as BTS Relay #24 “Minor Alarm” makes contact.
3 Turn the TCP power switch ON. The alarm condition should clear.
Rectifier Alarms
The following series of tests are for single rectifier modules in a multiple
rectifier system. The systems include a three rectifier and a six rectifier
system.
Single Rectifier Failure (Three Rectifier System)
Table 3-58 gives instructions on testing single rectifier failure or minor
alarm in a three rectifier system.
Table 3-58: Single Rectifier Fail or Minor Alarm
Step Action
1 Remove a single rectifier module and place it into the unused rectifier shelf #2.
2 Turn the AC breaker OFF, for this 2nd shelf.
3 Verify that a rectifier fail alarm is generated. The single rectifier module will lite two RED fail LED
(DC and Power), and the Meter Alarm Panel and LMF will also indicate a minor alarm and rectifier
fail status. The RECTIFIER FAIL LED will lite.
4 Check that the LMF reports both of these alarm conditions.
NOTE
Alarm conditions reported as BTS #24 and BTS #21, contacts respectively.
5 Turn the AC breaker for the 2nd shelf ON and verify that Rectifier Fail and minor alarm conditions
clear on the Meter Alarm Panel and LMF.
Multiple Rectifier Failure
Table 3-59 gives instructions on testing multiple rectifier failure or major
alarm in a three rectifier system.
Table 3-59: Multiple Rectifier Failure or Major Alarm
Step Action
1 With the rectifier module still in the unused shelf position fromTable 3-58 test procedures, turn the
AC breaker for the 1st shelf OFF.
2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will lite two RED fail LED
(DC and Power), and the Meter Alarm Panel and LMF will indicate a major alarm (Rectifier Fail and
Major Alarm). The RECTIFIER FAIL LED will lite.
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