The following table lists the Circuit Breakers tests:
No.
Test
Test description
1
Resistance -
μΩ
The contact resistance test is performed using the high DC current output. The test set
measures the contact resistance down to the µΩ range.
With the same selection, and different generators, it is also possible to measure higher
resistances.
Input parameters are: current output range, test current, and resistance limits. The display
shows the following:
•
DC current
•
DC voltage
•
Resistance
2
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 50 - Circuit Breakers tests
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