The measurement intervals of the measured I/O data must overlap exactly. Check the sync source setting.
For example, route the input to a three-phase device under measurement to input elements 1-3 on the power meter, and the output to elements 4-6. Set the sync source on elements 1-3 to the current or voltage of element 1 (I1 or U1), and the sync source on elements 4-6 to the voltage or current of element 4 (U4 or I4).
In a case when inputting three phases to elements 1-3 and DC to element 4, set all sync sources to current or voltage of element 1 (I1 or U1).
*Applies to the WT3000 for data update rates of 50 ms, 100 ms, 5 s, 10 s, or 20 s. "Sync Source" setting is irrelevant if the data update rate is 250 ms, 500 ms, 1 s, or 2 s
With 0.02% accuracy and 1MHz bandwidth, the WT3000 delivers where the highest precision measurements are required. It is the industry standard for R&D work on inverters, motor drives, lighting systems and electronic ballasts, UPS systems, aircraft power, transformer testing, and other power conversion devices.
The PZ4000 is designed for High Frequency Power Measurements as well as Transient Power Measurements. Its real-time acquisition system can perform cycle-by-cycle power measurements. One to Four input elements offer Basic Power Accuracy of 0.2% with 2 MHz Bandwidth and 5MS/sec digitizing rates.
The High-end WT1600 is designed for a wide range of applications, from energy-saving to large load applications. The WT1600 has a six element input capability to provide maximum flexibility, and Basic Power Accuracy of 0.1% with 1 MHz Bandwidth.
The WT1800 Power Analyzer offers maximum flexibility with up to six wattmeter elements, high bandwidths, simultaneous high speed digitizing, and wide voltage and current ranges. Although this model is still available, the newer WT1800E offers higher accuracy.
The WT2000 digital powermeter series has been designed with emphasis on basic performance (bandwidth, accuracy, response speed, and noise immunity) from the viewpoint of measurement of electrical quantities. The broad range of functions of these power analyzers enable them to be used in various fields of applications.
Yokogawa, the world's largest manufacturer of energy and power analyzers and meters, provides a broad choice of digital power analyzers to satisfy all requirements.