Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
Issue 10 July 2000
Testing 6 - 15
b. Hold the meter selector switch in the Rect V position, and use a
small screwdriver to turn the Float Adj potentiometer
clockwise until the digital meter reads approximately battery
voltage, typically 52 volts.
c. Turn circuit breaker CB1 on (up).
d. Turn the Power switch Off.
5. For testing with a controller, connect plant control cable J5A to
P5A on CM4, and then replace the REG fuse in the controller. For
a controllerless application, leave J5A disconnected, and replace
the REG fuse in the remote bay.
6. Turn rectifier Power switch On. It may be necessary to readjust
the Float Adj potentiometer further clockwise in order for the
rectifier output to return to plant float voltage and assume any load
now that it has changed to external regulation mode.
Testing On
Line
On- and off-line testing require different procedures, although most tests
can be performed in either situation. If you have just tested the rectifier
off line, it is not necessary to repeat the tests on line.
If no load is present, connect a test load to the rectifier. Disable load
share by setting S1.9 on CM2 to 0.
If the rectifier fails any of the tests in this section, replace the CM2
board and begin testing again.
Regulation (NL/
FL) Test
Note: At least two rectifiers must be supplying some current when this
test is done, and the load requirement must be greater than 40A, 10% of
the rated output for the rectifier under test.
1. Observe the amperes reading on the Output meter. Hold the Rect
Test switch in the NL position. The output amperes should
decrease.
2. Observe the amperes reading on the Output meter. Hold the Rect
Test switch in the FL position. The output current should increase.
