• Doble Engineering Private Limited

Sweep Frequency Response Analyzer

Doble Engineering Pvt. Ltd. offers Sweep Frequency Response Analyzer. Sweep frequency response is a major advance in transformer condition analysis, allowing you to "see" inside transformers without costly detanking.
The standard definition of frequency response analysis (FRA) is the ratio of a steady sinusoidal output from a test object subjected to a steady sinusoidal input. Sweeping through the frequency range of interest gives rise to the S in SFRA, to distinguish it from impulse methods, which estimate the response rather than measure it.
Doble’s M5000 series uses sweep frequency response analysis to detect mechanical failure or movement of windings from short circuits, mechanical stresses, or transportation. The instruments send an excitation signal into the transformer and measure the returning signals. Comparing this response to baseline and other results (such as from similar units) allows you to identify deviations and confirm internal mechanical problems.