Electrical network analyzer SFRA45

frequency responseportabledigital

The Sweep Frequency Response Analyzer simply injects a range of frequencies into a winding of a power transformer, when the power transformer is built correctly with no imperfections and faults the frequency response (of Gain Vs Frequency) plot of that particular type of transformer and winding on that particular transformer should exhibit a particular shape, this “shape” then becomes the transformers “fingerprint”. Over the course of the transformers lifetime this “fingerprint” can be used in order to detect degradation of the transformer. In addition, There are main occasions when SFRA is performed, It is when Upon factory quality checking, Before a short circuit test, Before and After transportation and Ongoing scheduled maintenance.