New Auto Transformers for Existing HVAC Power Panels- A Planning Guide

https://ups-voltage-control-notes.silverstonebrief.com/posts/buck-boost-transformers-for-industrial-lighting-circuits-key-things-to-know-about-full-load-testing

New Auto Transformers for Existing HVAC Power Panels: A Planning Guide Small power issues are easy to miss until a line is under stress. In HVAC power panels, motors and drives can draw very different currents across a work cycle