Lucent Technologies 415B Battery Plant for 4ESS
7 - 24 Retrofit of 415A Battery Plant
Issue 6 September 1999
Internal Tests
1. Disable the internal selective high voltage shutdown by
opening S205.1 and S205.2 on CM2 (see Figure 7-9).
Then adjust the Output Volts Adjust until the rectifier
shuts down.
2. Adjust the Output Volts Adjust down, restart the rectifier,
and adjust the voltage to 151.9 volts. The RFA Alarm
LED on the rectifier and the RFA LED on the test box
should go out. Restore internal selective high voltage
shutdown to 160V (S205.1 and S205.2).
3. Connect the test meter to the rectifier input conductor to
CB1 and DC OUTPUT RETURN. On the rectifier, hold
the Rect V - Amps - Plt V switch in the Rect V position.
The digital display should agree with the digital test meter
within ±0.1 volt. Release the switch.
4. Hold the same switch in the Plt V position. The digital
display should agree with the digital test meter within ±0.1
volt. If not, refer to the paragraph “Check Calibration of
CM3 Digital Meter” in this section.
5. Hold the Rect V- Amps - Plt V switch in the Rect V
position. Watch the digital test meter and operate the Rect
Figure 7-10: CM1 (329B) Fuse Board
SHUNT
Shunt Test Points
Note
When the rectifier shuts down, the RFA LED on the front
panel should light and the rectifier should shut down at 163 ±2
volts. When this step is completed, restore the original
conditions of S205.1 and S205.2.
