What is SFRA test on power transformer?

Question

Accepted Answer

SFRA test is a diagnostic test performed on power transformers to assess their mechanical and electrical integrity.

SFRA stands for Sweep Frequency Response Analysis.
It is a non-intrusive test that measures the frequency response of a transformer to a swept sinusoidal input signal.
The test helps in identifying mechanical and electrical faults in the transformer windings.
SFRA test results can be compared with baseline measurements to detect changes or abnormalities.
It is useful in detecting winding deformation, shorted turns, core movement, and other internal faults.
The test is typically performed during commissioning, maintenance, or after a fault event.
SFRA test equipment includes a signal generator, current and voltage sensors, and data analysis software.
Interpretation of SFRA test results requires expertise and knowledge of transformer behavior.
SFRA test is an important tool for condition assessment and predictive maintenance of power transformers.

Accepted Answer

SFRA test is conducted to detect mechanical changes within the main tank of power transformer. i.e. the position of the core,the windings,the insulation and space, etc.

What is SFRA test on power transformer?

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