Omicron Electronics Gmbh

Michael Krüger

Hossein Borsi

Michael Freiburg

Dmitry Atlas

Friedrich Kaufmann

Markus Jäger

Ernst Gockenbach

Florian Predl

Franz Süss

Ernst Prof Gockenbach

Hossein Prof Borsi

For testing a transformer () the transformer () is emulated by an equivalent circuit () and an accuracy of the transformer () relative to the equivalent circuit () is determined by evaluating a test response of the transformer () and is then automatically converted to an operating condition-related accuracy of the transformer ().

Method and apparatus for testing a transformer

Method and device for measuring a dielectric response of an electrical insulating system, wherein a first measurement result is determined by a frequency domain method and a second measurement result is determined by a time domain method, whereupon the first measurement result and the second measurement result are combined to form an overall measurement result as the dielectric response. Standard types of measurement methods, for example the FDS and PDC methods, may be used as measurement methods for the frequency domain and the time domain.

Method and apparatus for measuring a dielectric response of an electrical insulating system

Testing a transformer by applying to the transformer a test signal, the frequency of which may be lower than the nominal frequency of the transformer. The voltage of the test signal may also be lower than the nominal voltage of the transformer. A number of frequency-dependent parameters are measured, particularly the eddy current resistance and the hysteresis curve of the transformer, in order to derive a simulation model which simulates the behavior of the transformer at different frequencies. Using this simulation model, it is possible to predict operating parameters of the transformer, such as the terminal voltage on the secondary and the terminal current in the secondary, during operation with a frequency deviating from the frequency of the test signal, particularly during operation with the nominal frequency of the transformer.

Method for testing a transformer and corresponding test device

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Altach, Austria

Michael Krüger