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Asset Owner Sets the asset owner in the report
Set Date Time Change the time and date stored in the MVCT. This is only available in
MVCT with integrated display or if they are controlled with an STVI
Number Format Select between U.S. and International number formatting. This is only
available in MVCT with integrated display or if they are controlled with an STVI
Show Connection Diagrams: Allows user to turn off the functionality showing connection
diagrams before each test. This is not recommended because of safety concerns.
Knee Prediction Enabled/Disabled: Allows the user to enable and disable the knee point
prediction algorithms. If the user enters the nameplate information, the MVCT will use this
information to predict the knee point of the CT which can reduce testing time.
Lead Check Enable/Disable Allows the user to enable and disable the lead checking
algorithms. If enabled the MVCT will check connections prior to a test and monitor voltages and
currents during the test. Anytime an unexpected value is detected the user will be warned to
check the connections.
Nameplate Estimate Enable/Disable Allows the user to enable and disable the nameplate
estimation algorithms. If enabled the MVCT will estimate several nameplate values of the CT
including ratio, VA rating, and accuracy class. For this functionality to work properly it must be
enabled and the several tests must be performed on the CT from the Run All test screen. For
accurate estimates data is needed from the saturation/excitation test, ratio & phase test, as well
as the winding resistance test.
Default Number of Taps Allows user to set the default number of taps on a CT. For
example, if user only tests 2 tap/single ratio CTs then he can set the default number of taps to 2.
Then whenever test screens appear they will always default to 2 taps instead of 5
Use Binary Input as Stop Enables and disables the algorithms that monitor the binary IO
ports and shuts down unit
Saturation / Demag Method: The MVCT uses both AS and DC voltage for testing saturation
point and knee points of CT. The MVCT has the ability to output up to 300V AC. This
functionality allows the user to select the method which the MVCT uses for both saturating
and/or demagnetizing a CT. Most metering class CT has a knee point less than 100V, so the user
could set the method to use only AC on metering class CT. On the other hand, protection class
CT may need much more voltage to saturate than 300V so it would be best to set protection
class CT to use the DC method. Then for CT of unspecified type the user can select either AC or
DC depending upon the voltage level required to saturate the CT. By setting the default of
unspecified type to DC ensures that the CT will be tested correctly whether the knee point is
above or below 300V
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