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The SDM630 series measures and displays the characteristics of 1p2w, 3p3w and 3p4w, supplies including voltage, frequency, current, power, active and reactive energy, imported or exported, harmonics, etc.Bi-directional measurement makes it an ideal choice for solar PV measurement.Units support Max.Direct connection 100A, saving costs and avoiding problems of connecting external CTs.Two pulse outputs and 1 communication port (Mbus / Modbus) are provided for remote monitoring.