Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
7 - 12 Troubleshooting and Adjustments
Issue 8 July 1999
In Steps 4 and 5 of “Current Limit Test (Off Line),” if V
out
is
not within the required range, adjust R52 on CM2, (see Figure
6-3), until a correct voltage reading is obtained.
On Line Adjustment: Use “Current Limit Test (On Line)” in
Section 6 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 125-126A, hold the
RECT TEST switch in the full load (FL) position and
adjust the current limit potentiometer R52 on CM2, (see
Figure 6-3), until the rectifier delivers 125-126A.
Restoring a
Rectifier to
Service
1. Set the ac supply and rectifier controls as shown in Table
7-C.
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.
4. To bring the rectifier into service,
Table 7-C: 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
