Transformer Diagnostic Bulletin

The mission of the Transformer Diagnostic Bulletin is to provide a collection of unbiased technical documents (i.e. guides, PowerPoints, and papers), all relating to transformer testing. The Bulletin is always available to both customers and non-customers.

Keep in mind that the latest Bulletin includes all the material shared in the most recent and past Bulletins.

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Past Material

Technical Papers

• Three Tips for Reducing Wasted Time When Testing Transformers

• A Guide for Using PTM and the CIBANO 500 to Test Circuit Breakers in North America
• NETA World Spring 2019 - The Value of Performing Power Factor Sweep Measurements
• The Value of Performing Power Factor Sweep Measurements on Bushings – Revision #1
• An Introduction to Electrical Diagnostic Testing of Power Transformers
• Obstacles Associated with Winding Resistance Measurements of Power Transformers
• A Systematic Approach to Analyzing Exciting Current Measurements on Power Transformers
• Applying SFRA and Leakage Reactance to Determine Mechanical Faults in Transformers

 

Application Guides

• A Guide for Using PTM and the TESTRANO 600 to Test Transformers
• A Guide for Using PTM and the CPC 100 to Test Transformers
• Guide for Using PTMate
• A Guide for Power Factor Testing CCVTs, PTS, and HVCTs
• CCVT, PT, and HVCT Power Factor Test Templates

 

Technical Slides

• The Overall Power Factor Test (In-Depth)
• Variable Frequency Power Factor and Voltage Tip-Up Tests (In-Depth)
• Bushing Power Factor Testing (In-Depth)
• The Exciting Current Test (In-Depth)
• The DC Winding Resistance Test (In-Depth)
• SFRA Testing on Power Transformers (Introduction)