The Hioki PW339003 is a high-precision, broad-range power analyzer for measuring electrical power from DC to inverter frequencies, providing four input channels to support single- and three-phase inverter motor systems up to 4000 A AC/DC with superior accuracy. Easily connect high accuracy clamp-type sensors without cutting the cables. Sensors operate over a temperature range of -40° C to 85° C (-40° F to 185° F), characteristics that enable highly accurate measurements even inside the engine room of a car.

The PW3390-03 delivers 4 input channels and ±0.04% basic accuracy for power - the top instrument in its class. Achieve more precise measurements of the power and efficiency of high efficiency equipment used in power electronics. Further, a 200 kHz measurement band and flat amplitude and phase characteristics up to high frequencies enable the precise measurement of power at top frequency levels and low power factor.

The PW3390-03 features a built-in electric angle measurement function required for vector control via dq coordinate systems in high-efficiency synchronized motors. Make real-time measurements of phase angles for voltage and current fundamental wave components based on encoder pulses. Further, zero-adjustment of the phase angle when induced voltage occurs allows electric angle measurement based on the inductive voltage phase. Electric angle can also be used as an Ld and Lq calculation parameter for synchronized motors