The instrument offers an accuracy of 0.6% of the reading for the measurement, even at a power factor as low as 0.001 at 100 V and 1 A.
Transformer manufacturers can rely on the low power factor capabilities of the WT5000 Precision Power Analyzer - Transformer Version, as it comes with ISO17025 accredited calibration certificates from Yokogawa's ISO17025 accredited laboratory. This ensures compliance with IEC60076-8.
The analyzer is optimized by ISO 17025 accredited calibration at 53 Hz with power factors of 1, 0.5, 0.05, 0.01, and 0.001. Additional calibration up to 100 kHz ensures performance when measuring distorted waveforms, such as during no-load current measurements of transformers. This allows the integrated transformer measurement system to accurately measure power losses and capture any drift outside the limits specified in IEC 60076-8.
With a touchscreen compatible with hardware hotkeys and software for remote data capture, the WT5000 offers an intuitive experience. The 10.1-inch WXGA touchscreen provides noise immunity even in high-noise environments.
Using the WT5000 Precision Power Analyzer - Transformer Version, engineers can measure three or four different power phases at 10 MS/s (18 bits). The high-resolution, 10.1-inch WXGA display allows split-screen viewing of up to seven waveforms and can show up to 12 pages of measurement parameters from products as diverse as motors, inverters, renewable energy technologies, and traction applications such as pumps, fans, electric vehicles, and power transformers. Measurements can also be displayed in vector format or with time trends.
Yokogawa also offers supporting software packages that can be used to coordinate multiple instruments, including the WT5000, into a single Measurement System to view different data sources simultaneously.
Some software features allow users to simultaneously view up to 22 waveforms and two harmonic bar graphs (six waveforms, sixteen trends, two vectors, and three harmonic bar graphs: WTViewerE) in split-screen mode. Alternatively, they can zoom in using cursors to see more detail in a particular area of interest. Users can customize, save, and load screen layouts, as well as specify which data to save in CSV format. The software also allows users to create custom calculations by combining values from multiple power analyzers.
Furthermore, the software enables users to analyze and control remote measurements in real time or use previously acquired data. In online mode, users have real-time control of measurements from each connected instrument, allowing them to remotely start or stop integration or collect live measurement values. Users can also analyze the latest data acquired or previously stored in offline mode.
Up to 32 GB of internal storage memory can be used to store and retrieve various custom configurations and test setups. It can also be used to record large amounts of measurement data over extended periods, functioning as a data logger. This large non-volatile memory facilitates data storage without the need for any external media.
Using the WT5000's three-phase delta calculation, engineers can simultaneously verify line and phase voltages without rewiring. The built-in delta calculation function allows for star-delta and delta-star conversion, enabling users to calculate individual phase voltages from measured line voltages in a three-wire, three-phase (3V3A) system.
The WT5000 offers advanced harmonic analysis, enabling engineers to evaluate and compare the input and output harmonics of inverters, motors, or power conditioners up to the 500th order. In addition to measuring harmonics and power simultaneously, it also offers harmonic comparison of two different input sources.
Beyond low-frequency and line filters, the WT5000 features advanced filtering capabilities, allowing for the accurate analysis of even the most demanding waveforms.
