The Yokogawa WT3000 is capable of making voltage fluctuation and flicker measurements conforming to IEC61000-3-3 and IEC61000-3-11. It can measure relative steady-state voltage change (dc), maximum relative voltage change (dmax), relative voltage change time (dt), short-term flicker value (Pst), and long-term flicker value (Plt). The limit values set forth for the individual parameters are in accordance with the IEC standard. The voltage fluctuation and flicker measurement option (/FL) on the WT3000 can be used stand alone the make Pass/Fail judgement calls of dc, dmax, dt, Pst, and Plt for a given observation period. Using optional harmonic/flicker measurement software for the PC (761922), you can display trend graphs, CPF graphs, or reports of the dc, dmax, and IFS (instantaneous flicker sensation) values in addition to the WT3000 judgement results.
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