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Mitigating Transformer Stress from Impact Loading with PQ Canvass Analytics
This white paper explores the risks of impact loading on transformers, particularly from large motor inrush currents, and demonstrates how PQ Canvass reporting tools can quantify current surges, inform transformer sizing, and prevent premature equipment failure. Key findings include the importance of accurate measurement intervals, correct recorder settings, and the use of specialized reports to determine safe transformer operation under repetitive high-current events.
Key topics include:
- Motor Inrush Current
- Unit Transformers
- Unit Transformer Sizing Considerations
- Transform Sizing Curve
- Recorder Settings for Measuring Impact Loading
- Using PQ Canvass for Analyzing Motor Starts
Why utilities should care:
Frequent high-current inrush events can cause mechanical stress and early failure in transformers. Accurate monitoring and reporting enable data-driven transformer sizing and de-rating decisions, reducing maintenance costs and improving system reliability.
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