Along with power levels from 45 kVA to 1.6 MVA that optimize testing capabilities for dispersed energy inverters, programmable PAS-F Series combines utility grid simulation and regenerative bi-directional AC source capable of sourcing and sinking full current load from DUT. Full DUT current is sunk into AC source, and 92% of power is regenerated back to utility grid. Adjustable output voltages and frequency, embedded LVRT test windows, and DSP-based controller are standard.