AC Power Source - 350VA to 1200VA
APS-4000 - Matrix Technology Inc.
APS4000 Series is an AC power source from 350VA to 1200VA, output frequency: 45Hz-250Hz continuously adjustable (special frequency can be customized); Output phase voltage: withstand 1V-150VAC, high-grade 151V-300VAC, automatic gear 1V-300V.