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10.5
Polarity check
This measurement type is exclusively intended for polarity checks using the
CPOL2 polarity checker as described below. Do not use this mode for any
other measurements!
Note: The Polarity Check measurement type requires the CPOL2 polarity checker
from OMICRON.
Polarity Check is a predefined measurement type, intended especially for checking
a series of test points (e.g., the connecting terminals of the burden wiring) for
correct polarity. For this purpose, CT Analyzer injects a signal with a special
waveform similar to a saw-tooth signal with a different steepness for the rising and
the falling slope. The CPOL2 polarity checker from OMICRON checks the polarity of the injected signal
and provides a clear indication whether the polarity is OK or not.
Checking the polarity using the Polarity Check measurement type is much faster than conventional
methods and can easily be performed by a single person.
To select the Polarity Check measurement type, use the
Measurement Type field in the CT-Quick card and then press the Polarity Check soft key.
Figure 10-6: CT-Quick card and Results card for the Polarity Check measurement type
For the Polarity Check measurement type, the CT-Quick card holds the following measurement
quantities:
Table 10-5: Parameters for Polarity Check measurement type
Parameter
Description
Output
The output signal type is fixed to "AC".
U/I
Operating mode of the internal signal generator: voltage or current source. Fixed to
"Current".
Amplitude
Current value of the polarity check signal. Adjustable by the user.
Possible values: 0 to 7A. Default: 1.00A.
OMICRON
Using the Quick Test feature
How to get there:
Press the Main soft key in
any test card
Main Menu:
OK soft key
CT-Quick card:
cursor key to move the cursor to the
- New Quick-Test
Measurement Type:
Polarity Check
151
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