Lucent Technologies Lineage
®
2000 125A Ferroresonant Rectifier J85502C-1
6 - 18 Testing
Issue 8 July 1999
Current Limit
Test (On Line)
Read the following notes before proceeding.
1. Connect a DMM to the REG test jacks to verify the battery
voltage.
2. Hold the RECT TEST switch in the full load (FL)
position to raise the rectifier output current to current limit.
The output current should indicate 125-126A, 100 to 101
percent of the rated output current.
3. If the output current is not within 125-126A, the current
limit needs adjustment. See “Adjust Current Limit” in
Section 7.
Isolated Current
Measuring (VI)
Test (MCS or
Galaxy
Controller)
This procedure checks the isolated current measuring circuit
(voltage proportional to current adjustment) on the rectifier’s
CM2 control board. The procedure is required only when CM2
is installed as part of a Lineage
®
2000 Battery Plant with an
MCS (Microprocessor Controlled System) or Galaxy
(Intelligent only) controller and when the output current reading
on the rectifier does not agree to within 2.5 percent of the MCS
or Galaxy Controller reading. This procedure must be performed
Notes
Adjust the current limit only after verifying that a current limit
circuit problem exists.
There must be two or more rectifiers with a plant load of at
least 25 percent higher than the capacity of the largest
rectifier.
This method applies to a working plant. If the conditions in
the following note cannot be met, the unit must be tested off
line.
In a working plant, the current limit set point can be found by
adjusting the OUTPUT VOLTS ADJ potentiometer on the
rectifier under test to obtain approximately 3/4 load and a
battery voltage of 52.08 volts.
Note
At the rated output current of the rectifier, the shunt voltage is
40 millivolts.
