A test procedure that applies to single- and three-phase units rated from 1 kW to 500 kW and may also be applied in principle to larger units is given. The objective is the measurement of electrical parameters at the ac terminals of the power converter. The procedure may serve as a basis for factory or acceptance testing. It focuses on equipment that lends itself to mass production and is readily interconnected to an electric utility, rather than on equipment subject to site-specific design and testing. Test results may be used in evaluating or comparing different types of static power converters. Only equipment with the primary function of delivering electric energy to circuits interconnected with the electric utility is covered by this procedure.