Failure Analysis of Transformers

Transformer Microsections

 

Failure analysis of transformers involves a combination of x-ray imaging, dissection, microsectioning, optical microscopy, and SEM/EDS analysis in order to isolate and characterize the root cause of the failure, since transformers are very often potted in an encapsulant. 

Failures in transformers and a transformer microsection are shown below.

ELECTRONIC COMPONENT F/A

FAILURE ANALYSIS SERVICES

Other device failure analysis information:


Transformers

SEM image of transformer in cross section.

 

SEM image of transformer in cross section.

 

This image shows the primary winding after the secondary winding was removed

Transformer primary winding after the secondary winding was removed.

 

Measuring transformer wire diameter.

Measuring transformer wire diameter.