we have Kohler Genset that turn on during sags or utility power failures. It alongwith its peripheral equipment, needs some diagnostics for voltage drop effect during startup & regular operation. It is also under partial control of a PLC system for smooth switchover from utility to back-up. Need an expert to help with this. We shall provide more information once a shortlist is made.
May require a site visit to Texas in USA. You may suggest alternatives if a visit cannot be made.