Yokogawa WT300 series digital power meters

The WT300 series digital power meters can be integrated into laboratory test benches or automated test set-ups on production lines. USB and GPIB or RS232 is fitted as standard and ethernet is available as an option.

The meters are the fifth generation of Yokogawa’s compact digital power meters.

The instruments will help developers and manufacturers of electrical equipment - ranging from domestic whitegoods to lighting systems and air-conditioning equipment - to ensure that their products comply with emerging international standards and increasingly complex and stringent specifications on energy efficiency.

Features of the instruments include: a basic accuracy of 0.1% of reading, a wide measurement range from standby power levels of a few milliamperes up to the 40 A currents used in induction cookers, and flexibility to enable users to target different technical and commercial applications. Also, a bandwidth of DC and 0.5 Hz to 100 kHz (up to 20 kHz for 40 A on the WT310HC), plus an auto-range function for measurement and integration.

In addition to standard power measurements, the meters offer a wide range of harmonic measurement capabilities, including the ability to carry out simultaneous measurement of normal power parameters such as RMS, mean or DC power along with measurement of harmonics up to the 50th order. As a result, overall measurement times are reduced.

Software is also available for testing equipment compliance to industry energy-saving standards such as IEC62301 Ed2.0 and IEC62018 for standby mode equipment or for dealing with waveforms having a crest factor of 5 or more.