Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
6 - 10 Testing
Issue 8 July 1999
on the test set should light and remain lit as long as the
rectifier is turned On.
Regulation
(NL/FL) Test
(Off Line)
1. Hold the meter selector switch in the RECT V position.
Watch the test meter and move the RECT TEST switch to
NL. In the NL position, the voltage should drop between
0.3 and 0.6 volt.
2. Repeat Step 1 with the RECT TEST switch in the FL
position. The voltage should increase between 0.1 and 0.4
volt.
Rectifier Failure
Alarm/Fuse
Alarm Test (Off
Line)
1. Insert a piece of bare wire or the end of a paper clip into a
pencil eraser. Holding the pencil, insert the wire next to the
alarm indicator of the +V fuse on the control panel. Note
that the rectifier shuts down and the RFA lamps on the
control panel and test set light. The FA LED on the control
panel should also light.
2. Turn the POWER switch Off, then back On. The RFA
light should go off.
3. Repeat Steps 1 and 2 at the -V fuse.
Current Limit
Test (Off Line)
Read the following notes before proceeding.
1. Connect the test meter to the input conductor at the top of
CBA1 and the rectifier ground bus.
2. Strap a short across capacitor C24 on CM2, see Figure
6-3.
3. At I
load
= 125-126A, 100 to 101 percent of rated output
current, use the OUTPUT VOLTS ADJ potentiometer to
adjust V
out
to
Notes
Adjust the current limit only after verifying that a current limit
problem exists.
V
out
is the voltage reading between the rectifier output
terminal and return, see Figure 5-4.
