Yokogawa WT2010 Digital Power Meter

The Yokogawa WT2010 is a single-phase digital power meter engineered for precise AC and DC power measurement and analysis across a wide frequency spectrum. It delivers ±0.04% accuracy on power measurements at 50/60 Hz and supports simultaneous acquisition of up to 36 data items per 250 ms, making it ideal for inverter development, power electronics characterization, and harmonic analysis in high-frequency switching environments.

Technical Specifications

• Voltage and Current: DC, 2 Hz to 500 kHz


• AC Power: 2 Hz to 300 kHz Accuracy (50/60 Hz)


• Power Measurement: ±0.04% of reading + ±0.04% of range


• Voltage and Current: ±0.03% of reading + ±0.03% of range


• Zero Power Factor (45–66 Hz): ±0.1% of range


• Half-Period RMS (Voltage Fluctuation/Flicker): ±0.1% of reading + ±0.1% of range


• Pst/Plt (Flicker): ±5% (at Pst = 1)


• Fundamental Power: ±0.08% Signal Conversion and Processing


• 16-bit A/D converter with 32-bit high-speed DSP


• Data output rate: up to 36 items per 250 ms


• Selectable display update: 0.25 sec (FAST), 0.5 sec (MID), 2.0 sec (SLOW) Input Ranges


• Voltage: 10, 15, 30, 60, 100, 150, 300, or 600 V


• Current (Direct): 1, 2, 5, 10, 20, or 30 A


• Current (External Shunt): 50, 100, or 200 mV

Key Features

• Variable attenuator filtering reduces noise and common-mode voltage for PWM inverter measurements


• Auto-resolution method maximizes display precision across integration periods


• Integration functions support current and power accumulation with polarity discrimination


• Isolated current inputs prevent crosstalk with voltage channels


• Peak overload indicators warn of voltage or current exceedance


• Current input protection via large-capacity diodes safeguards internal shunt resistors


• Key lock prevents accidental setting changes during active measurement


• Optional harmonic analysis module available

Typical Applications

• Inverter-driven product development and validation


• Power electronics efficiency testing


• Voltage fluctuation and flicker measurement


• High-frequency AC and DC power characterization in switching environments

Compatibility & Integration Direct measurement inputs accommodate standard voltage ranges and current inputs via shunt or direct connection. High-speed DSP processing enables real-time data streaming suitable for automated test systems and remote monitoring applications.