Tettex MIDAS 2881, Руководство по эксплуатации

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56 Software
Field Set Voltage / Voltage Max
This field contains information about the voltage value, which has
to be applied to the DUT. The maximum voltage is shown on the
top right.
For voltages lower than 10 kV and power higher than 1.5 kVA,
the maximum voltage should be set below 10 kV to get to power
at the test object. In this case a lower winding on the high voltage
transformer will be used.
Field Set Frequency
In this field the frequency which has to be applied to DUT can be
entered.
Button Record
The actual selection of measured data will be stored in the
spreadsheet. The “Time” field and the “description” field will be
copied from the previous line.
Button Comment
By pressing this button the comment field of the selected row can
be modified. It is also possible to select more than one row and
change them simultaneously.
Button Tools
Clicking this button will open a list with elements described below.
This list will also pop up if you click the right mouse button
somewhere in the tab sheet.
For additional information about every option in this pop up
window consult the chapter “tools window”
Button Extended Noise Reduction
Under high disturbance influence, it is not possible to measure at
line frequency. In this situation the dissipation factor / power
factor will be measured by varying the frequency and
interpolation the dissipation factor at line frequency. In this case a
filter a low pass filter with very strong damping will be used.
If it is not possible to measure, f.e. if the variance of the
measuring results is too high, the user will be asked to use
"Extended Noise Reduction".
A progress bar shows fhe progress of the calculation. At the end
of the calculation, a new dissipation / power factor will be
displayed. All other measuring results are updated faster. f