M4000 Insulation Analyzer User Guide
72A-1230 Rev. F 3-27
July 22, 2005
Accurate tuning of the Resonator is obtained by turning the tuning control
until the current taken from the 120 volt supply is a minimum. To do this in
the Clipboard test mode
, follow this procedure:
1. Set the test for Line Sync Reversal (Under the LC column, select C).
2. Connect the M4000, the resonator, and the specimen as shown in
Figure 3.17
3. Select the “System” tab from the “Tools/Configuration” menu of the
M4000.
4. Set the M4000 to the “Manual Set Voltage” Ramp Mode.
NOTE Do not raise the test voltage beyond the allowed limit for the attached
specimen.
5. Unclamp the Resonator Core.
6. Raise the test voltage to about 2 kV, using the Page Up (fast) or Up Arrow
(slow) keys.
7. Observe the “input current” in the “Test Results” box.
8. Tune the Resonator until the “input current” of the M4000 is at a
minimum.
9. To fine tune, raise the voltage to the final test voltage, or as close to it as
possible, and repeat steps 7 and 8.
10. Reclamp the Resonator core.
11. Lower the voltage. The Resonator is tuned and you are ready to enter
information on the row in the clipboard you are using for the test.
12. When filling in the clipboard row prior to starting the test, remember to
select one of the “Line Sync Reversal” choices, C or F, in the LC (Line
Configuration) column. For a description of all the Line Configuration
choices, see “Glossary”, in the “Contents” selection of the M4000 “Help”
menu.
13. When finished using the Resonator, you may wish to return to Tools/
Configuration and return the M4000 to its original settings of “Auto.
Ramp Voltage” Ramp Mode in the System Configuration.
Due to the high currents involved requiring the use of the Resonator, the 120
volt supply cord to the M4100 should be of relatively large wire gauge in order
to minimize the line voltage drop.
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