This instrument is a high efficiency power source that provides a low distortion sine wave output. The AC Power Source can supply up to 2000VA for the 2001 L-PT, 1667 VA for the 1501 L-PT and 835 VA for the 751 L-PT. See the following table for the full output VA rating. MODEL OUTPUT V A 35°C 50°C 2001L 2000 1800 1501L 1667 1500 751L S3 5 750 Full power is available at the maximum output voltage on either of two voltage ranges. The standard voltage ranges are 135 and 270. Three optional voltage range pairs are available: 67.5/135,156/312 and 200/400. Full power is available from 45 Hz to 550Hz except for the 200/400 volt range (EHV option)