Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
7 - 16 Troubleshooting and Adjustments
Issue 10 July 2000
Adjust Current
Limit
Off Line Adjustment: Use the Current Limit Test (Off Line) to verify
that the current limit circuit needs adjustment, before continuing with
this procedure.
In Steps 4 and 5 of the Current Limit Test, Section 6, if V
out
is not within
the required range, adjust R88 on CM2, (see Figure 6-3), until a correct
voltage reading is obtained.
On Line Adjustment: Use the Current Limit Test (On Line), 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 400-404A, hold the Rect Test
switch in the full load (FL) position and adjust the current limit
potentiometer R88 on CM2, (see Figure 6-3), until the rectifier
delivers 400-404A.
Warning: The rectifier is designed to provide 400 amperes. If the
current limit is set beyond this rating, the unit may overheat, and its
useful life may be severely shortened.
ISHVSD in Plants
Without a
Controller
To avoid overvoltage conditions on the actual battery plant loads,
perform this procedure with the rectifier disconnected from the battery.
A portable test load that can supply at least 440A, 10 percent above the
rectifier's current rating, is required.
1. Connect the test load as specified in Section 6. Then restore ac
power to the rectifier.
2. Turn the Power switch On.
3. Turn the CB1 circuit breaker On.
4. Adjust test load to 440A or greater. Read load current on control
panel meter.
5. Open switch contacts S3.7 and S3.8 on CM2.
6. Adjust the Float Adj potentiometer to obtain a rectifier voltage of
55.0 ± 0.6 volts. Read voltage on control panel meter by holding
meter switch in Rect V position. The rectifier should shut down.
7. Decrease the load to less than 2 percent and restart the rectifier.
The rectifier should start and operate normally. If the rectifier does