Transformer Bulletin
The mission of the Transformer 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.
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Read our articles
A Guide for Power Factor Testing Instrument Transformers
CCVTs
- PTs
- CTs
Read more
Additional articles:
New Material
- NETA World Spring 2019 - The Value of Performing Power Factor Sweep Measurements
- Guide for Using PTMate
Past Material
Technical Slides
- The Overall Power Factor Test (In-Depth)
- The Power Factor Frequency Sweep and Voltage Sweep 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)
Technical Papers
- 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
Miscellaneous Videos, Guides, and Information