Lucent Technologies Lineage
®
2000 200A Ferroresonant Rectifier J85503B-2
Issue 8 January 1999
Testing 6 - 25
5. Remove the simulated failure. If the rectifier is providing a
load greater than 12 amperes, the LCA LED should go off.
6. With the rectifier load sharing, turn the Float Adj
potentiometer fully counterclockwise. The LCA LED
should light and generate an alarm on TB3-5 and TB3-6 of
CM4.
7. Restore the rectifier voltage.
Special
Application
Load Share
(NLS)
Note
This test applies only to -48V rectifiers.
1. Remove the controller cables or remote sense leads.
Connect test the load. Although adjustment is made
off-line, special application load share can only be used in
a remote sense mode.
2. Disconnect and insulate the NLS bus leads from TB3-11
and 12 of CM4, shown in Figure 5-6.
3. Turn the rectifier on and adjust the test load until the
rectifier output equals full load.
4. Enable load share by closing S2.7. If not already adjusted
in a previous procedure, adjust the output voltage to the
desired level. You may need to readjust the test load so that
output current equals full load again.
5. Using a DDM, measure the NLS voltage across TB1-2
(R-) and TB3-12 (NLS) of CM4. The measured voltage
should be 8Vdc± 1%. If the voltage is other than specified,
adjust R20 on CM4 until the measured voltage is 8 volts.
6. Remove the test load. Bring the rectifier on line and restore
the controller cables or remote sense leads. Readjust output
voltage to desired float voltage if necessary.
7. Reconnect NLS bus connections.
8. Repeat Steps (1) through (7) on each rectifier in the plant.
Adjust non-Lucent according to their respective manuals.
9. After all adjustments have been made, turn on all rectifiers.
Total load current should be shared in proportion to the full
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