4-4
FIGURE 9: I.R. Testing Screen
During the I.R. test, real time data of the output voltage, current, and resistance measured with the
Megohmmeter is displayed, counting down by second with the test time previously entered in minutes (Figure
9). The I.R. test works by applying the entered voltage to the test object over the desired test time as a
voltage withstand test, in addition, this test is also capable of
RTVC (real time voltage control)
, in which using
the up and down arrows on the keypad will adjust the output voltage accordingly.
The test will be conducted and will end if a proscribed time had been entered at setup unless the operator
ends the test early with the HV OFF button or the STOP key.
The PM15-4A is also capable of
Intra-Test Printing.
During the I.R. test; the operator can print during a test
at any time without waiting for the test to be completed for a real time print out of the data at a given moment.
NOTE: Pressing the HV OFF button
OR
the STOP key on the keypad will end the test prematurely and give
the final results and reason for test ending.
FIGURE 10: Test Completion Page
The Test Completion Page (Figure 10) is displayed upon completion of the I.R. test, after the previously
entered test time has passed. The operator is given the choice to save or print the final test data. The
PM15-4A will discharge the test object upon test completion. Depending on the size of load capacitance,
dangerous voltages may be present at the end of the lead for a few moments. Always ground any high
voltage leads before removing leads from test object. The use of appropriately rated discharge and
grounding devices is recommended to ensure that the test object is fully discharged and grounded before
removing leads after testing is complete. A minimum discharge time which is approximately 4 times that of
the voltage application duration is recommended.