Yokogawa WT5000 Precision Power Analyzer

The Yokogawa WT5000 is a precision power analyzer engineered for high-accuracy electrical and mechanical power measurement across industrial and automotive applications. Its modular architecture accommodates seven user-swappable input elements, enabling simultaneous analysis of up to seven phases with over 1000 power parameters delivered in real-time. The instrument achieves ±0.03% basic power accuracy across a wide dynamic range - 1% to 130% of selected voltage and current inputs - while maintaining exceptional performance at low power factors and large phase shifts.

With 10 MS/s sampling rate, 18-bit resolution, and 1 MHz power bandwidth, the WT5000 delivers reliable measurements in electrically noisy environments. Its advanced isoPRO™ fiber optic isolation technology supports both AC power accuracy (0.01% of reading + 0.02% of range) and DC power accuracy (0.02% of reading + 0.05% of range). Low power factor influence is held to 0.02% of apparent power, critical for motor and renewable energy testing.

Technical Specifications

• Basic Power Accuracy: ±0.03% of reading


• AC Power Accuracy: 0.01% of reading + 0.02% of range


• DC Power Accuracy: 0.02% of reading + 0.05% of range


• Accuracy Range: 1% to 130% of selected voltage and current ranges


• Sampling Rate: 10 MS/s


• Resolution: 18 bit


• Power Bandwidth: 1 MHz


• Voltage Measurement Range: 1.5 V to 1500 V


• Current Measurement Range: 5 mA to 30 A (with interchangeable elements)


• Simultaneous Phase Analysis: Up to 7 phases


• Harmonic Analysis: Up to 500th order


• Motor Evaluation Channels: Up to 4 motors simultaneously


• Data Update Interval: 10 ms standard; 50 ms with data streaming


• Raw Waveform Data Streaming: Up to 22 items at 2 MS/s


• Custom Computations: Up to 20 user-defined calculations

Key Features

• Motor evaluation with synchronized rotational speed, torque, electrical angle, mechanical power, and efficiency measurements


• Harmonic analysis independent of external sampling clock


• Configurable advanced filtering for wideband and harmonic power analysis in high-noise environments


• Simultaneous harmonic comparison across multiple input sources


• Interchangeable current input elements for flexible measurement ranges

Typical Applications

• Electric vehicle powertrain development


• Renewable energy systems and inverter testing


• Motor and drive efficiency validation


• Home appliance power consumption analysis


• Industrial equipment characterization


• SPEC Power® testing

Compatibility & Integration Accepted for SPEC Power® testing. Compliant with IEC harmonic and flicker measurement standards. Supports analog and pulse outputs from torque and rotation sensors.