Lucent Technologies Lineage
®
2000 100A Ferroresonant Rectifier J85503A-1
7 - 10 Troubleshooting and Adjustments
Issue 6 October 1998
Adjust Current
Limit
Off Line Adjustment: Use the “Current Limit Test (Off Line)”
in Section 6, Testing, to verify that the current limit circuit needs
adjustment, before continuing with this procedure.
In Steps 4 and 5 of the “Current Limit Test (Off Line)” in Section
6, Testing, if V
out
is not within the required range, adjust R88 on
CM2 (see Figure 2-3) until a correct voltage reading is obtained.
On Line Adjustment: Use the “Current Limit Test (On Line)”
in Section 6, Testing, to verify that the current limit circuit needs
adjustment before continuing with this procedure.
1. Hold the Rect Test switch in the full load (FL) position
and observe the output current.
2. If the output current is not within 100-102A, hold the Rect
Test switch in the full load (FL) position and adjust the
current limit potentiometer R88 on CM2, (see Figure 2-3)
until the rectifier delivers 100-102A.
Restore
Rectifier to
Service
1. Set the ac supply and rectifier controls as shown in Table
7-B.
2. If the rectifier voltage was NOT at the desired float voltage
before it was turned off, rotate the Output Volts Adj
potentiometer fully counterclockwise.
3. At the ac service panel, install the ac fuses or turn the ac
input circuit breaker ON.
Table 7-B: Control Settings Prior to Restoring Rectifier
to Service
Controls
Position/Status
Associated ac circuit breaker
or fuses at the ac service
distribution panel
Off or fuses removed and
holders tagged “Out of
Service”
Rectifier Power switch
Off (down)
Rectifier DC Output circuit
breaker
Off (down)
Rectifier REG fuse in the
plant controller
Removed
