How to Limit Heat Stress in Auto Transformers for HVAC Power Panels

https://voltage-control-explained.hexaforgey.com/posts/protection-and-controls-with-open-delta-transformers-in-factory-power-panels

How to Limit Heat Stress in Auto Transformers for HVAC Power Panels A power design needs to work on a busy day, not only on paper. In HVAC power panels, motors and drives can draw very different currents across a work cycle