Fluke 1750 Fluke 1750 Operators Manual - Page 45
Harmonics Screen, Trend Screen, Harmonics, Trend
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Power Recorder Viewing Live Data Harmonics Screen The Harmonics screen shows the magnitudes of the selected phases of V and I. The scale is % of nominal. The slider control displays harmonics of a higher order up to the 50th. The V and A scaling arrows are on the screen in the upper right. If the power type is delta, V phases are AB, BC, and CA (L1L2, L2L3, L3L1 is available as a localized European labeling scheme). If the power type is Wye, V phases are AN, BN, CN, and NG. (N = neutral, G = ground). Azd124.bmp Trend Screen The Trend screen shows live data being recorded as a strip chart display of the selected phases of voltage or current. This moment in time is visible on the right side of the graph. The traces fill the screen in 10 minutes, and continue FIFO (first-in, first-out). This feature is intended to paint a picture of the short-term stability of the power system. The V and A scaling arrows on the upper right work like the scaling arrows on the PHASOR screen. Azd125.bmp 37