Power analyser gains complex capabilities

An advanced calculation function for the Yokogawa WT3000 precision power analyser supports customer requirements for more advanced and complex power analysis capabilities.

An advanced calculation function has been introduced as an option for the Yokogawa WT3000 precision power analyser to support customer requirements for more advanced and complex power analysis capabilities.

The new /G6 option adds the capability for IEC61000-3-2 compliant harmonic measurements, wide bandwidth harmonic measurements, FFT calculations and waveform mathematical function, plus the ability to store transient waveform data.

In the IEC harmonic measurement mode, the instrument can be used with Yokogawa's new 761922 harmonic measurement software to perform tests conforming to IEC61000-3-2 Rev 2.2.

It complies with the latest IEC61000-3-2 and IEC61000-4-7 requirements, including 10/12 cycle waves at 50/60Hz, inter-harmonic measurements and grouping.

The wide-bandwidth harmonic measurement function allows harmonic analysis on waveforms with a fundamental frequency range from 0.1Hz to 1kHz (or 0.1-10Hz using an external sampling clock).

Measurements can be made up to the 50th-order harmonic at a 1kHz fundamental frequency, or up to the 20th-order harmonic in the range from 1.1 to 2.6kHz.

Two FFT calculations can be performed simultaneously on waveform data of measured voltage and current, with a user-selectable minimum resolution of 1 or 10Hz.

FFT analysis can be performed at up to 100kHz.

Up to two waveform calculations and other mathematical functions can be carried out at once.

With a formula that multiplies voltage and current waveforms, an instantaneous power waveform can be performed on screen.

Mathematical data can be saved in CSV or WVF format, and WVF data can be displayed on Yokogawa's WTViewer application software 760122 and saved in CSV format.

The transient waveform storage function enables waveform quality to be precisely analysed.

All captured voltage and current waveform data up to the maximum sampling speed 200Ksample/s, along with waveforms calculated using the mathematical and FFT functions, can be stored into the acquisition memory, which has a maximum capacity of 48 million points.

The stored data can be saved in CSV or WVF format into PC card or USB memory, and easily transferred to PC via USB, Ethernet or GPIB interfaces.

The Yokogawa WT3000 precision power analyser claims "best in class" precision and stability.

With a basic power accuracy of +/-0.02% of reading, DC and 0.1Hz-1MHz measurement bandwidth, and up to four input elements, the WT3000 provides a high-accuracy measurement solution for testing all types of power electronics products.

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