CP TD1
CP TD1 - 4
CP TD1
By connecting a reference capacitor (e.g., optional device CP CAL1) with known values of
capacity Cref and dissipation factor DFref, in mode UST-A the values Cx and DFx can be
measured and then compared to the known reference values.
If you experience substantial deviations, re-calibrate the CP TD1:
• Cx = Cref / Cmeas and
• DF / PF + = DFref - DFmeas
as described on page CP TD1-6.
A re-calibration of the CP TD1 is also shown in the test report (.xml file).
Note: If you change the factory-made calibration, the responsibility for the accuracy of the
CP TD1 will be in your hands.
Calibration tips:
► For calibration, set the averaging factor to maximum and the filter bandwidth to ± 5 Hz (refer
to page CP TD1-5).
► To reset to the factory settings, select "DF/PF+" to 0.0 ppm and "Cx" to 1.000 (refer to page
CP TD1-6).
Use the optional device TH 3631 to measure ambient temperature, the test object temperature
and humidity. Once these values were measured, enter them into the respective entry fields of
the TanDelta test card’s Settings page at “Compensations” (see page CP TD1-6).
For detailed information on the CP TD1 applications, refer to the CP TD1 Reference Manual
delivered with the CP TD1 or available in pdf format on the CPC 100 Start Page.
Test Templates
The test procedures for designated applications are controlled by templates available on the
CPC 100 Toolsets shipped with your CP TD1 or on the CPC 100 Start Page.
Test templates are available for the following areas:
• Power transformers
• Instrument transformers
• Rotating machines
• Cables and transmission lines
• Grounding systems
• Others
Calibrate the CP TD1 Using a Reference Capacitor Option TH 3631 Application and Test Templates
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