No.
Test
Test description
8
Rogowski (Ratio)
The test is performed connecting the high AC current source to the primary side, and
connecting the CT secondary side to the low voltage measurement.
Input parameters are the following:
•
The nominal primary current and the nominal secondary voltage, from which
the program computes the nominal ratio
•
The current range
•
The test current
•
The test frequency
The display shows the following:
•
The nominal primary current and the test current
•
The actual test current, the secondary voltage, and the value of the primary
current with the nominal secondary voltage
•
Actual ratio and ratio error
•
Phase shift and polarity
9
Low Power (Ratio)
The test is performed connecting the high AC current source to the primary side, and
connecting the CT secondary side to the low voltage measurement.
Input parameters are the following:
•
The nominal primary current and the nominal secondary voltage, from which
the program computes the nominal ratio
•
The current range
•
The test current
•
The test frequency
The display shows the following:
•
The nominal primary current and the test current
•
The actual test current, the secondary voltage, and the value of the primary
current with the nominal secondary voltage
•
Actual ratio and ratio error
•
Phase shift and polarity
10
Tan(δ) measures
The test is performed using the TD 5000 optional module, and then connecting the high
AC voltage source to test target.
Displayed parameters are the following:
•
Test type (1)
: Where the HV output is applied: in case of a specific device under
test (CT, VT, PT or bushing), the options are displayed
•
Capacitance (2)
: In case of a specific device under test (CT, VT, PT or bushing),
the options are displayed
•
Generation mode
: to execute a single shot, a voltage or a frequency gradient
•
Test mode
: It is selected in reference to the TD 5000 and the device under test
connection. In case of a specific device under test (VT, in this case), the more
correct test mode is automatically selected, considering also the selections (1)
and (2)
•
Voltage/Frequency test table
: It allows to input the test voltage and frequency
•
Nominal Values
: Capacitance and TD reference values. In case of a specific
device under test (CT, VT, PT or bushing), these values are kept from the
related headers
•
Temperature compensation: The Capacitance and TD values vary with the
temperature: optionally, the “k” factor is used to compensate the measures
•
Test table
•
Results table
•
Test voltage, current and frequency
•
Capacitance, Tan(δ), power factor (PF)
•
Power: active, reactive, apparent
•
Impedance: module, argument, components
Table 43 - Current Transformers tests (3/4)
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