Ppm-90 is a special electronic measurement instrument for measuring electrical net-work parameter, the measured parameter displayed on 5 goup monitor, which can measure and manage more than 50 electrical networks parameters at the same time. Ppm-90 provides the line voltage, phase voltage, phase current, phase power factor, total current, active power, reactive power, apparent power, active kilowatt hour, reactive kilowatt hour and so on electrical network parameters, at the same time, it provides the demanded value of phase current, total current, total work power, reactive power and apparent power, ppm-90 has 485 communication interface, adjustable voltage, current transformer ratio and various voltages input mode to enable its to adapt to the electricity usage situation of many kinds of different voltages specification.
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