Smit implements Yokogawa analyser in test system

The Yokogawa WT3000 digital power analyser is at the heart of a test system being used by Smit Transformers NV to provide accurate measurement of power losses.

These units are designed for three-phase operation with voltages up to 525kV and power ratings up to 1,000MVA.

At these power levels, the power losses which are inherent in every transformer design can have a significant effect.

Smit Transformers use a number of transformer test systems incorporating proprietary power meters.

Smit's engineers used the Yokogawa WT3000, which has multiple inputs enable it to carry out simultaneous measurements on all three phases.

The built-in oscilloscope-type display on the WT3000 allowed engineers to view the current and voltage waveforms, so that they could see in real time the effects of those harmonics that can affect measurement results at low power factors.

To ensure that the measured results were correct, Smit Transformers then confirmed the calibration of the test system using the services provided by the Canadian Metrology Institute.

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