Item #:WEB 2020-3 - Price: $99.00
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WEBINAR: Applying Sweep Frequency Response Analysis and Leakage Reactance to Determine Mechanical Faults in a Power Transformer

 

Webinar: Applying Sweep Frequency Response Analysis and Leakage Reactance to Determine Mechanical Faults in a Power Transformer

Sweep Frequency Response Analysis (SFRA) and Leakage Reactance (LR) testing provides essential information needed to determine the “mechanical” condition of transformer assets. Fault events or shipping impacts are the main causes of transformer winding damage. Winding movement and/or deformation may cause changes in the leakage channels and associated passive RLC elements. RLC refers to the opposition to current flow through a passive component in an AC circuit, resistance, or “R” for a resistor, capacitive reactance, XC for a capacitor and inductive reactance, XL for an inductor. The combination of resistance and reactance is called Impedance. Both Sweep Frequency Response Analysis (SFRA) and Leakage Reactance (LR) can be used in conjunction to identify and confirm changes in the leakage channels and associated passive RLC elements. These changes are used to identify the following mechanical failure modes:

  • Radial Deformation
  • Axial Deformation
  • Bulk Winding Movement

This presentation focuses on how the Sweep Frequency Response Analysis (SFRA) and Leakage Reactance (LR) tests can be applied to power transformers. Your team will be provided with an understanding, application, and analysis of these tests, supported by specially selected case studies, validating the value that these diagnostic tests bring to testing, and finally, assessing power transformers.

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