Lucent Technologies Lineage
®
2000 100A Ferroresonant Rectifier J85503A-1
6 - 16 Testing
Issue 6 October 1998
must be performed while connected to an MCS or Galaxy
controller and a battery.
Refer to Figure 2-3 for components on the CM2 control board.
Plant control cable connector J2A MUST be connected to P2A
on CM2 for this procedure.
1. Connect a DMM across the rectifier shunt (see Figure 5-4).
2. Increase the load so the rectifier delivers approximately
50A, 50 percent of its rated current capacity.
3. Observe the DMM and record the rectifier's shunt voltage.
The shunt is rated
, which means that each
millivolt of voltage drop across the shunt indicates 2.5A of
output current.
4. Convert the DMM's shunt voltage reading to amperes. For
example, if the DMM reads 40mV, then
of output current. As this calculation indicates, the rectifier
is operating at full load, and the rectifier shunt voltage is
40mV at full load.
5. Compare the amperes calculated in Step 4 with the rectifier
drain indication on the MCS or Galaxy controller.
6. If the rectifier drain indication is between 0 and 2% higher
than the amperes calculated in Step 4, this procedure is
completed.
7. If the rectifier drain indication is between 0 and 2% lower
than the amperes calculated in Step 4, adjust potentiometer
R86 on CM2 control board to obtain a rectifier drain
reading that is between 0 and 2% higher than the amperes
calculated in Step 4.
8. If the rectifier drain indication was not within the limits
specified in Step 6 or 7, the isolated current measuring
circuit needs adjustment. See “Adjust Isolated Current
Measuring Circuit (VI)” in Section 7, Troubleshooting and
Adjustments.
125A
50mV
---------------
2.5A
mV
-----------
=
40mVx
2.5A
mV
-----------
100A
=
