Omicron Lab CT Analyzer, User Manual

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145
Using the Quick Test Feature
8.5 Polarity Check
This measurement type is exclusively intended for polarity checks using
the
CPOL polarity checker as described below. Do not use this mode for
any other measurements!
Note: The Polarity Check measurement type requires the CPOL polarity
checker from OMICRON (order number VEHZ 0650).
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, the
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
CPOL polarity checker from OMICRON
checks the polarity of the injected signal and provides a clear indication as to
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 cursor key to
move the cursor to the Measurement Type field in the CT-Quick card and then
press the Polarity Check soft key.
Figure 8-6 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:
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.
Press the Main soft key in
any test card
Main Menu:
- New Quick-Test
OK soft key
CT-Quick card:
Measurement Type:
Polarity Check
How to get there: