This document provides a test procedure for evaluating the performance of Under VoltageRide-Through (UVRT) functions in inverters used in utility-interconnected Photovoltaic (PV)systems.

This document is most applicable to large systems where PV inverters are connected to utilityhigh voltage (HV) distribution systems. However, the applicable procedures may also be usedfor low voltage (LV) installations in locations where evolving UVRT requirements include suchinstallations, e.g. single-phase or 3-phase systems.