The motorized AC variacs of the series MV are suitable for voltage dips and voltage variation test. The Motorvariac is suitable for testing 3-phase EUT in delta and star connection as per IEC 61000-4-11 Ed 2 : 2004-03. The the internal voltage control compensate automatically voltage variations on the mains supply for the tapped output voltage. Output voltage MV 3P4063DS: 3 x 0 - 400V (L-L) / 63A AC, 50 / 60 Hz. Input Range: 3 x 380V – 440V