The Yokogawa WT3003E is a three-element precision power analyzer delivering ±0.04% basic power accuracy for high-fidelity electrical measurements across motor drives, solar inverters, lighting systems, and uninterruptible power supplies. This instrument combines multi-channel capability with advanced harmonic and flicker analysis, making it suitable for applications requiring simultaneous single-phase and three-phase characterization or three-phase input/output configurations.
– Technical Specifications
• Model: WT3003E (three-element configuration)
• Basic Power Accuracy: ±0.04% of reading
• Measurement Bandwidth: DC and 0.1 Hz to 1 MHz
• Direct Input: Up to 600 V and 20 A maximum
• Input Elements: Configurable 2 A and 30 A elements—combinations include 2A0–2A3 and 30A0–30A3 within a single unit
• Data Storage: Minimum interval of 50 ms; supports waveform sampling data archival
• Harmonic Compliance: IEC61000-3-2, IEC61000-3-12, IEC61000-3-3, IEC61000-3-11; wide bandwidth harmonic measurement from 0.1 Hz to 2.6 kHz fundamental frequency
• Flicker Measurement: IEC61000-3-3 and IEC61000-3-11 compliant
• Operating Temperature: +5 to +40 °C
• Humidity: 20 to 80 % RH (non-condensing); 35 to 80 % RH with printer (non-condensing)
• Altitude: 2000 m or less
• Power Supply: 100 to 240 VAC
• Warm-up Time: Approximately 30 minutes
– Key Features
• Three-channel input architecture supports single-phase/three-phase output or three-phase/three-phase configurations
• Simultaneous harmonic and power measurements in normal mode
• Waveform computation and FFT analysis
• Delta calculation function for phase voltages derived from line voltages
• High-speed auto-ranging in integration mode
• Large, high-resolution LCD display
• Optional frequency measurement on all input elements (/FQ)
• Dual-unit synchronization capability for extended three-phase systems
– Typical Applications
Motor drive characterization, solar inverter performance validation, lighting load analysis, and UPS system testing.
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