CP TD1
CP TD1 - 5
The TanDelta-PF test card can be accessed from CT, VT, Transformer and Others test card
groups.
“Auto test points” cleared = manual measurement: Applies the set test voltage and
frequency to the CP TD1’s output. When the measurement is finished, its results are displayed
in the results table.
“Auto test points” selected = automatic measurement: Enables the output of a series of test
points, e.g., combining a series of voltage values with one fixed frequency value creates a
voltage ramp. Combining a series of frequency values with one fixed voltage value creates a
frequency ramp. Furthermore, a combination of both is possible.
► Set a test voltage and frequency of your choice, and press Add to Auto. The values are
entered into the list boxes.
► Set a second test voltage and/or frequency, and again press Add to Auto. The value(s) is/
are appended to the list.
► Repeat this procedure as often as you need.
Note: You cannot enter the same value twice. Double entries are rejected. If you need identical
test points for an increasing and a decreasing voltage ramp, set values very close to each other,
e.g., 2000 V and 2001 V.
The CP TD1 then puts out the specified list of values as follows:
1. All voltages are issued in the exact order they were entered using the first frequency value
of the list.
2. All voltages are issued once more in the exact order they were entered using the second
frequency value of the list (if any).
3. ... and so forth.
Each combination is one individual measurement, and its result is displayed in the results table
with an individual line.
To delete an entry from a list box, place the cursor on the value and press Delete Value. Do
delete all values from both list boxes, place the cursor on "Auto test points (V, f)" and press
Delete List.
During the measurement, the list boxes display the current output values.
Select for automatic measurement,
clear for manual measurement.
*)
.
Selecting enables the list boxes.
Select "Assessment" to automatically assess the test, clear for no assessment.
Enter the nominal values in the entry fields (here "Cref" and "DF ref"; availability and naming
depend on the measuring mode). These values serve as reference for the assessment. Their
tolerance range can be set on the Settings page (see page CP TD1-6).
A measurement is rated as ’OK’ if both values are within their tolerance range. The assessment
is displayed in the test point tables’s column "?"
Note: While a test is running, new nominal values can already be entered.
Test voltage and frequency.
Selecting a measuring mode and
pressing the handwheel displays an
image that shows the according
arrangement of the internal
measurement switch-matrix.
**)
Results table.
Also refer to page CP TD1-8.
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