Compact range of power meters

22 January 2013

The new WT300 series of digital power meters from Yokogawa are the fifth generation of its compact digital power meters which have a key role in ensuring optimum standards of energy efficiency and conservation by measuring the power consumption of electrical equipment.

The new instruments are designed to help developers and manufacturers of electrical
equipment – ranging from domestic 'white goods' to lighting systems and air-conditioning equipment – to ensure that their products comply with emerging IEC and EN standards and increasingly complex and stringent specifications on energy efficiency.

Features of the new instruments include a basic accuracy of 0.1% of reading, guaranteed accuracy over the entire measurement range (from 1% to 130% ), 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

This includes a range of communications interfaces, which allows the WT300 series of digital power meters to 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.

In addition to standard power measurements, the meters offer a 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.

Other features ments include 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.

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