TDAcompact
Loss Factor Analyzer
Loss Factor Analyzer
Key Benefits
- Principle of Operation
- Stand-alone Instrument
- Modular Concept
- The TDAcompact simultaneously samples the AC current drawn by the device under test and the current drawn by a reference capacitor. Subsequently, the two current traces are evaluated and the capacitance, the tanδ, and the level of the high voltage are calculated. The unit continuously displays and refreshes these results. Therefore, the instrument does not require any user interaction as with the traditional Schering Bridge, nor does the refresh of the display take that long as with automatic adjusting bridge type analyzers. The basic resolution of the tanδ measurement is 10-4, which fulfills the requirements for rotating machine testing as well as for testing on mass-impregnated cables.
Description
The TDAcompact is a portable capacitance and tanδ analyzer. The focus of the instrument's application is on the analysis of the epoxy-mica insulation of rotating machines. Besides this, the unit is applicable for oil-paper insulation systems and especially for mass-impregnated cables.
Analyzing the dissipation factor (tanδ) is a traditional method to assess the condition of an insulation system. With the analysis of the dissipation factor, emphasis is more put on the overall health of the insulation system, whereas with partial discharge analysis, the focus is on individual defects producing discharge activity. Therefore, the application of tanδ measurements concentrates on insulation systems, which are relatively stable against partial discharge.
Most prominently, the health of an epoxy-mica insulation of a rotating machine can be assessed using a tanδ analyzer. Especially, the presence of humidity within the winding, the surface contamination of field grading elements, or the polarization losses of improperly cured resin, can be detected. Thus, the tanδ analysis is still a good complement to the partial discharge testing.
To receive software updates or user guides, please contact support.pdix@megger.com or call +49 241 74927. Please have your device serial number ready or state your reason for interest.
