|
|
,
Mitigating Transformer Stress from Impact Loading and Motor Inrush Currents
This white paper examines the effects of impact loading‚ primarily from large motor inrush currents‚ on transformer health and longevity. It details how repetitive high-current pulses can cause mechanical stress and early transformer failure, and presents practical methods for monitoring, analyzing, and mitigating these effects. The paper introduces the ProVision Current Over Limit Report as a tool for quantifying motor starts and guiding transformer sizing or de-rating decisions under impact load conditions.
Key topics include:
- Motor Inrush Current
- Unit Transformers
- Unit Transformer Sizing Considerations
- Transform Sizing Curve
- Recorder Settings for Measuring Impact Loading
- Using ProVision for Analyzing Motor Starts
Why utilities should care:
Understanding and managing impact loading is crucial for reducing transformer failures, optimizing asset sizing, and preventing costly downtime. Accurate monitoring and analysis enable informed decisions on transformer de-rating, improving system reliability and operational efficiency.
You may also enjoy...
