Introduction
15
1 Introduction
1.1 Designated Use
The CP TD1 is an optionally available high-precision test system for on-site
insulation tests of high-voltage systems like power and measuring transformers,
circuit breakers, capacitors and isolators. With the add-on device CP TD1, the
CPC 100 increases its range of possible applications into high-voltage
measurements.
The internal switched mode power amplifier enables measuring at different
frequencies without interferences with the mains frequency. Automatic test
procedures reduce the testing time to a minimum. Test reports are generated
automatically.
The CP TD1 comes with its own test card named TanDelta (Tangent Delta),
which provides highly accurate measurements of the capacitance Cx and the
dissipation factor tanδ (DF) or power factor cosϕ (PF), respectively.
Both the dissipation factor and the power factor grant information about possible
losses in the insulation material, which are increasing with age and water
content. A change of Cx is a warning indicator for partial breakdowns between
the layers of a bushing or a capacitor.
Additionally, the CP TD1 measures the following quantities:
• Actual, apparent and reactive power
• Quality factor QF
• Inductance
• Impedance, phase angle
• Test voltage & current
The CP TD1 works as an add-on device to the CPC 100. Do not connect the
CP TD1 to any other device. Do not use the accessories for applications not
indicated in this user manual.
Any other use of the CP TD1 but the one mentioned above is considered
improper use, and will not only invalidate all customer warranty claims but also
exempt the manufacturer from its liability to recourse.
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