High accuracy even at low power factors

The WT3000E represents great improvement over previous models in terms of power factor error (it is approximately three times more accurate). With improved measurement accuracy in the lower power factors—such as with transformers, active power values can be measured with higher precision.


Simultaneous measurement of RMS and the mean

RMS (the true RMS value) and the mean (rectified mean value calibrated to the rms value) can be measured at the same time, allowing for measurement of corrected power (Pc) and other measurements conforming to transformer evaluation standards.
* Current rms and current mean can not be measured simultaneously.


Phase Voltage Confirmation

The built-in delta computation function allows both star-delta and delta-star conversion. For example with delta wiring, you can check the line voltage and phase voltage simultaneously without changing the wiring.

Power Analyzers

Power Analyzers

A power analyzer measures electrical power characteristics of devices that generate, transform, or consume electricity. Also called power meters or wattmeters, these devices measure parameters such as true power (watts), power factor, harmonics and efficiency in inverters, motor drives, lighting, home appliances, office equipment, power supplies, industrial machinery and other devices. Power analyzers also enable engineers to minimize energy loss due to distorted, transient waveforms in power electronics such as inverters, motors, lighting circuits, and power supplies. 

Yokogawa, the world's leading manufacturer of electrical power analyzers, provides a broad selection to satisfy all requirements.