19
Leakage Current Re-Calibration
1.
Turn Off the HT-5000P ac/dc 200mA unit.
2.
Select the type of output voltage with the AC/DC Switch.
3.
Connect the output of the HT-5000P ac/dc 200mA unit through a 1000 watt high voltage
load resistor (25k
in series with an external current meter returning to the Return jack on
the front panel of the HT-5000P ac/dc 200mA as is shown on figure 4-2.
4.
Enter to
Calibration Mode
. See Entering Calibration Mode procedure.
5.
Select the top calibration leakage point by pressing the
Reset
button until L1 is shown on
the front display of the HT-5000P ac/dc 200mA unit.
6.
Turn the Voltage Adjust on the front panel to minimum. Press the
Test
button and a
leakage number will be displayed on the front panel meter (150.0 for AC or 120.0 for DC).
Be careful as the HT-5000P ac/dc 200mA will be putting out voltage at this point.
7.
Slowly turn the Voltage Adjust on the front panel clockwise until the current flowing on
the external current meter (mA scale) equals the number showed on the front meter of the
HT-5000P ac/dc 200mA unit, then, press the Test button and the front display will show
“hold” for a few seconds, wait until the front display show again "L1" again.
8.
Select the bottom calibration leakage point by pressing the
Reset
button until L2 is shown
on the front display of the HT-5000P ac/dc 200mA unit.
9.
Turn the Voltage Adjust on the front panel to minimum. Press the
Test
button and a
leakage number displayed on the front volt panel meter (30.0 for AC and DC). Be careful
as the HT-5000P ac/dc 200mA will be putting out voltage at this point.
10. Slowly turn the Voltage Adjust on the front panel clockwise until the current flowing on
the external current meter (mA scale) equals the number showed on the front meter of the
HT-5000P ac/dc 200mA unit, then, press the Test button and the front display will show
“hold” for a few seconds, wait until the front display show again "L2" again.
11. Turn Off the HT-5000P ac/dc 200mA tester.
12. Confirm the new leakage current calibration performing again the Leakage Current
Verification procedure, mentioned before.
Summary of Contents for HT-5000P
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Page 12: ...7 Figure 3 1 Front Panel Controls Indicators and Connectors...
