User Manual
Alarms Testing – continued
PRELIMINARY
SC 4812ETL BTS Optimization/ATP
08/15/2000
3-88
Table 3-51: Multiple Rectifier Failure or Major Alarm
Step Action
1 With the rectifier module still in the unused shelf position fromTable 3-50 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 illuminate two (2)
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 illuminate.
3 Verify that the LMF reports both alarm conditions. (BTS #29, BTS #21, and BTS #24)
4 Turn the AC breaker for the 1st shelf ON. Verify that all alarms have cleared.
5 Return the rectifier module to its original location. This completes the multiple rectifier alarm test.
Single Rectifier Failure
(Six Rectifier System)
Table 3-52 gives instructions on testing single rectifier failure or minor
alarm in a six (6) rectifier system.
Table 3-52: Single Rectifier Fail or Minor Alarm
Step Action
1 Remove two(2) rectifier modules from shelf #2.
2 Turn the AC breaker OFF, for shelf #2.
3 Verify that a rectifier fail alarm is generated. The single rectifier module will illuminate two (2) 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 illuminate.
4
Check that the LMF reports both of these alarm conditions (BTS #24 and BTS #21)
4
Ch
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at t
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e
LMF
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ot
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ese a
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(BTS
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an
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BTS
#21)
5 Turn the AC breaker for this shelf ON and verify that Rectifier Fail and Minor Alarm conditions have
cleared.
Multiple Rectifier Failure (Six
Rectifier System)
Table 3-53 gives instructions on testing multiple rectifier failure or major
alarm in a six (6) rectifier system.
Table 3-53: Multiple Rectifier Failure or Major Alarm
Step Action
1 Replace one rectifier module previously removed and turn the AC breaker for this shelf, OFF.
2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will illuminate a RED fail
LED, and the Meter Alarm Panel will indicate a major alarm (Rectifier Fail, Major and Minor
Alarm).The RECTIFIER FAIL LED will illuminate.
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