Power Quality Analyzer

• 3-phase voltage, current, frequency, measurement
• active, reactive, apparent power, power factor
• neutral current
• harmonics analysis up to 50th order
• quality - swell, dip, interruption, transient/over voltage, inrush current, unbalance rate
• real-time operation
• USB communication interface

For three-phase balanced system, the sum of instantaneous values of phase voltages (as well as currents) is zero: $$v_{L1} + v_{L2} + v_{L3} = i_{L1} + i_{L2} + i_{L3} = 0$$ In such case also $$u_{N1} = u_{N2} = 0$$ and $$v_1 = v_{L1}\frac{R_{12}}{R_{11} + R_{12}}$$