Typical ATS panels operate with incoming feeders from utility and standby generator sources, with protection relays providing under/over-voltage, under/over-frequency, phase loss, phase sequence, reverse power, overload, earth fault, and generator protection . Typical ATS panels operate with incoming feeders from utility and standby generator sources, with protection relays providing under/over-voltage, under/over-frequency, phase loss, phase sequence, reverse power, overload, earth fault, and generator protection . Abstract—An automatic transfer scheme (ATS) is a widely used power system protection and control scheme to automatically transfer loads from one source to another during contingencies. Most modern ATS controllers and logic processors are also programmed with additional protection and operational. An automatic transfer switch (ATS) ensures a smooth handoff between primary power and a backup source such as solar, battery, or generator, without rebooting connected gear. Below is a comparison table showcasing top ATS models designed for battery backup and solar setups, highlighting key features. We aren't just going to skim the surface.