SFRA (Sweep Frequency Response Analysis) Test
Sweep Frequency Response Analysis (SFRA) is one of the most advanced and accurate diagnostic methods for determining the internal mechanical condition of the power transformers.
It detects hazards such as
- Winding deformation,
- Core displacement,
- Short-circuit impact and
- Internal mechanical faults before they cause a severe failure.
Why does SFRA are Important?
Early detection of mechanical faults
Prevents unexpected transformer breakdowns
Ensures safety, dependability and extended operational life
Confirms transformer condition after transportation (or) faults
Provides extremely accurate and repeatable results
How SFRA (Sweep Frequency Response Analysis) Test Works?
A low-voltage frequency sweep is performed on the transformer windings & the resulting frequency response curve indicates whether the transformer is mechanically healthy (or) damaged.
SFRA is widely regarded as the most reliable way of evaluating transformer mechanical integrity which is important for utilities, industries and substations.
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