Resistance Measurement - Omicron Lab CT Analyzer User Manual

CT Analyzer User Manual
8.8

Resistance Measurement

How to get there:
Press the Main soft key in
any test card
Main Menu:
- New Quick-Test
OK soft key
CT-Quick card:
Measurement Type:
Resistance
154
This is a predefined measurement type, intended especially for the quick
measurement of resistances.
To select the Resistance measurement type, use the
the cursor to the Measurement Type field in the CT-Quick card and then press
the Resist. soft key.
Figure 8-15 CT-Quick card and Results card for resistance measurement
For the Resistance measurement type, the CT-Quick card holds the following
measurement quantities:
Parameter Description
Output The output signal type is fixed to "DC".
U/I Operating mode of the internal signal generator: voltage or
current source. Fixed to "Current".
Amplitude Amplitude of the output current. Adjustable by the user.
Possible values: 0 to 10A. Default: 1.00A.
Warning: Resistance measurement is performed with DC current. Feeding
an inductance with DC current will charge the inductance. The CT Analyzer
does not perform automatic discharge of the inductance. Risk of electric shock!
Wait until the inductance has discharged completely before touching any
connections or disconnecting the measurement leads of the CT Analyzer.
The following values are displayed in the Results Resistance card:
Value Description
Output Internally measured output current.
Sec Voltage measured at input "Sec".
Prim Not used for resistance measurement.
Rs Serial resistance, calculated from the output current and the
voltage measured at input "Sec".
cursor key to move