Display Mode Settings; Settings For Partial Discharge Measurement - Megger Power Diagnostix ICMflex User Manual

ICMflex
Partial discharge and loss factor measurement system
5.5

Display mode settings

Settings affecting the individual graphs or measurements can be found in the lower area of the window above
the functional keys. Depending on the graph or area activated (indicated by a dark grey area in the back-
ground, e. g. the graph on the lower left-hand side in Figure 34) different settings will be displayed. To toggle
between the different setups just click once with the left mouse button on the area or graph that you intend to
modify.
Select relevant chart
Related settings become available

5.5.1 Settings for partial discharge measurement

SETTING
PD Auto Gain
PD Gain
Cal Gain
Cal Value
Highpass
30 User guide for ICMflex
VALUES / RANGE EXPLANATION
On / Off The automatic gain adjustment can help to find the best gain set-
ting for the PD measurement path. If the PD signal rises 95% of
the Y-scale, the software automatically decreases the level. If the
level drops down below 10 %, the gain level will be incremented.
If the PD level is bouncing strongly, it could make sense to disa-
ble the automatic mode.
1, 2, 4, 8, 10, 20, The signal amplification can be set manually by selecting an
40, 80, 100, 200, adequate factor from the list. An optimal PD level is given, if the
400, 800, 1024, highest peaks appear in a range of 60 to 90 % of full scale.
2048, 4096
1, 2, 4, 8, 10, 20, This entry indicates the gain value as it was set during calibra-
40, 80, 100, 200, tion. This value will be modified automatically during calibration
400, 800, 1024, and cannot be set manually.
2048, 4096
1pC–10000 pC This value has to be set according to the PD level that is used
during calibration.
40 kHz, 80 kHz, Depends on the lower cut-off frequency of the PD bandpass
100 kHz filter.
Figure 34: Chart settings
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