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Protrol AB
Tel: 031- 45 82 00
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411 40 Göteborg
17
e-mail: [email protected]
The
Phase
checkboxes above the oscillogram is used to display the signals graphically, while the radio
buttons below each signal are used for
phase
selection
.
Figure 9.
Checkboxes and radio buttons for graphical display options.
It is possible to
trace
a single curve. Select the curve of interest with the phase selection radio buttons
above the graph, then push the left mouse button on the graph and drag the cursor horizontally along the
time axis until the marker is at the desired location.
Each sample value is displayed numerically together with the time tag to the right of the phase selection
radio buttons. If the
RMS
checkbox is checked the corresponding RMS value for one cycle ahead of the
cursor is shown instead of the sample value.
Instead, if the right mouse button is pressed anywhere along a signal, all sample values at a given time are
displayed in a popup, see Figure 10.
Figure 10.
Sample popup.
A useful feature of the transient fault recorder is the possibility to make a snapshot of the actual phase
currents by pressing the
Freeze
button and then the
Upload TFR
button. The
Freeze
button is not available
unless any registered faults have been
Acknowledged
(see Section 4.1Detector Function)! Observe that a
manually initiated TFR replaces the last saved TFR
–
it is therefore recommended to upload any recordings
of interest
before
a snapshot is made.
Please notice the scroll box to the left containing the samples as a numerical table. It also contains meta
information that describes the conditions when the recording was made. It is possible to add additional
observations or notes to the scroll box
by starting each row with a “;”.
File Handling
When uploading a TFR from the IPS2 a question dialog is displayed asking for saving the file. This can also
be done later by pressing the
Save File
button. Saved files can be retrieved later by pressing the
Open File
button.