Yokogawa WT2030 Digital Power Meter

The Yokogawa WT2030 is a precision digital power meter engineered for high-accuracy measurement of AC and DC power across extended bandwidth. It delivers simultaneous measurement and output of up to 36 data items per 250 ms, making it ideal for power supply characterization, inverter development, and motor evaluation. The instrument combines 16-bit A/D conversion with 32-bit DSP computation to achieve power accuracy of 0.04% of reading + 0.04% of range, with optional high-accuracy mode at 0.03%.

Technical Specifications

• Frequency Range: DC to 500 kHz (voltage and current); DC to 300 kHz (AC power)


• A/D Conversion & Processing: 16-bit A/D converter with 32-bit high-speed computation DSP


• Power Accuracy: 0.04% of reading + 0.04% of range; optional 0.03% high-accuracy mode


• Zero Power Factor Measurement Error: 0.1% of range (45 to 66 Hz)


• Data Throughput: 36 measured values per 250 ms


• Input Impedance: Approximately 2 MΩ


• Input Capacitance: Approximately 0.1 µF

Key Features

• Optional harmonic analysis up to the 50th harmonic per IEC1000-3-2, with configurable window width and selectable analysis range


• Voltage fluctuation and flicker measurement compliant with IEC1000-3-3 and near-total IEC868 compliance; includes Pst and Plt indicators


• Line filter function with selectable cutoff frequencies at 500 Hz or 5.5 kHz for fundamental wave RMS measurement


• Optional built-in printer for direct output of measurement values, settings, and harmonic analysis bar graphs

Electrical Integration

• GP-IB interface: IEEE Std 488-1978 (JIS C 1901-1987) compliant with IEEE Std 488.2-1987 protocol


• RS-232-C: Selectable baud rates from 75 to 9600 bps with start-stop synchronization


• Measurement configurations: Single-phase two-wire, single-phase three-wire, three-phase three-wire, three-phase four-wire, and three-voltage/three-current systems