9
Advanced Partial Discharge Measuring System MPD 600
We will now perform a calibration of the test object and high voltage supply.
Connect the calibrator to the test object. Select a charge of 100pC. Pulses should clearly extend
from the background noise as “spikes”. If the noise floor covers PD pulses, select a higher
charge on the calibrator (depending on your test object and available charge calibrator you may
use another charge level).
• Enter the calibrator charge (e.g. 100pC) into the “Calibrate to” field in the PD section.
• Click on the “Compute” button in the PD section. The display value for QIEC should now
correspond to the calibrator charge.
• Disconnect the calibrator.
• Secure the high voltage test set-up observing safety procedures.
• Turn on the high-voltage supply. Set voltage to a known level (e.g. 2kV).
• Enter voltage level (e.g. 2kV) into the “Calibrate to” field in the Voltage section.
• Click on the “Compute” button in the voltage section. The display value for voltage
should now correspond to the actual voltage.
Now return to the main “Settings” page by clicking on the “Settings” tab.
We will now record a histogram:
• Click on the “Go” button. A histogram will be accumulated over a specified time period.
The progress bar at the bottom will indicate the progress of this operation.
• Once a histogram has been accumulated, the image may be saved to disk by right-
clicking on the scope display. A context-menu will pop up and offer to save the image to
disk as a PNG file. PNG is a popular image format providing lossless compression.
• All of the data gathered during a measurement may be recorded for later analysis by
clicking on the “Record” button (marked by a large red dot). The software will display the
hard disk space consumed during this operation and the remaining disk space.
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