Lucent Technologies Lineage
®
2000 25A Ferroresonant Rectifier J85502A-1
Issue 4 May 1998
Troubleshooting and Adjustments 7 - 11
In Steps 4 and 5 of the Current Limit Test (Off Line) in Section
6, 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 the “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 25-25.25A, 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 25-25.25A.
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,
a.
Turn the rectifier POWER switch On. The green
POWER LED must light. Wait 10 seconds.
Table 7-C: Control Settings Prior to Restoring Rectifier to
Service
Controls
Status/Position
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
