Lucent Technologies Lineage
®
2000 100A Ferroresonant Rectifier J85503A-1
6 - 10 Testing
Issue 6 October 1998
3. Reduce the test load to zero.
4. Press the HV switch on the test set. The rectifier should
continue to operate.
Selective High
Voltage
Shutdown
(SHVSD) and
Restart
1. Adjust the test load so that the rectifier delivers 10-15A, 10
to 15 percent of its rated amperage.
2. Momentarily press the HV switch on the test set. The
rectifier should shut down and the RFA lamps on the
rectifier and the test set should light.
3. Momentarily press the RS switch on the test set. The
rectifier should restart and both RFA lamps should go off.
Meter
Calibration Test
(Off Line)
1. Adjust the load so that the rectifier delivers approximately
50 amperes, 50% of its rated current capacity.
2. Connect a DMM, set on the dc millivolt scale, across the
rectifier’s 125A/50mV shunt.
3. Observe the DMM and record the rectifier’s shunt voltage.
The shunt is rated 125A/50mV = 2.5A/mV, which means
that each millivolt of voltage drop across the shunt
indicates 2.5A of output current.
4. Convert the DMM shunt voltage reading to amperes. For
example, if the DMM reads 20mV, then 20 mV x 2.5A/mV
= 50A of output current.
5. Compare the amperes calculated in Step 4 with the digital
display of the meter while the switch is in the AMPS
position.
6. If the digital display reading is between ±2% of the
amperes calculated in Step 4, this procedure is completed.
7. If the rectifier drain indication is not as indicated in Step 6,
calibrate the CM3 card via its R15 potentiometer as
specified in Section 7.
Off-Line Test
Completion
1. Reduce load so the rectifier delivers 20-30A, 20-30% of its
rated current.
