Controlling and monitoring in running operation
40
The
U/I loggers
menu item can be used to view the recorded current and voltage
waveforms and check for abnormalities.
The current and voltage values are stored in 1-second intervals and held for 30 days
before they are deleted from the internal memory.
The buttons on the bottom of the diagram can be used to toggle between the previous
days. The button
serves to jump back to the current day. In addition to the date, the
displayed time range (
Range
) and the gap between the individual measuring points
(
Resolution
) can also be adjusted via the drop-down menu.
The buttons on the upper right edge of the display can be used to show or hide the
curves of individual the power modules.
In order to display a specific voltage or current value, just click/tap on that point on the
curve.
If required, the measured values can also be exported as CSV files and thus
conveniently analyzed on a workstation PC in a suitable application (for example,
Microsoft Excel). Follow these steps to export the files:
Step Action
1
Insert the USB stick into the USB port
of the supply module.
2
Open the menu
Settings
Fault location
.
3
Call up the menu item
Data export
.
4
Export the desired data:
U/I measured data
CSV files with timeline of the following current and
voltage values (in separate columns):
•
Average of the last 5 periods
•
Average of the last 150 periods
•
Average of the last 10 minutes
•
Average of the last 2 hours
A separate file is created for each day since
commissioning.
Fault location data
Log files in XML format which are primarily used by the
technical support of Megger for purposes of analysis.
Analysis of current and
voltage measurements
