Attributes . harmonic distortion || programmablity (logic and math functions) || voltage sag and swell detection || up to the 63rd harmonic || IEC 61000-4-15 flicker || transient capture || EN 50160 compliance report || IEC 61000-4-30 class S power quality measurement || magnitude harmonic up to the 40th || EN 50160 ed. 4 power quality monitoring . Names