The Yokogawa WT1804E is a precision power analyzer built for simultaneous measurement of up to 6 voltage and 6 current channels with 0.05% basic power accuracy. It delivers 2 MS/s sampling at 16-bit resolution across a 5 MHz bandwidth, making it ideal for detailed characterization of power conversion systems, motor drive behavior, and energy monitoring in R&D and manufacturing environments.
Technical Specifications
Measurement Performance
• Simultaneous 6V/6I channel measurement
• Sampling rate: 2 MS/s, 16-bit resolution
• Voltage and current frequency bandwidth: 5 MHz
• Basic power accuracy: ±0.05% of reading ±0.05% of range
• Guaranteed accuracy across 1% to 110% of selected range
• Input voltage range: 1.5 V to 1000 V
• Input current range: 10 mA to 5 A or 1 A to 50 A
Harmonics Analysis
• Up to 500th harmonic order analysis for 50/60 Hz fundamentals
• THD, HDF, THF, and impedance measurement
• Dual harmonic mode for simultaneous inverter input/output analysis
• 50 ms harmonic data update rate
Motor Evaluation (Optional)
• Speed, torque, slip, electrical angle, mechanical power, and efficiency measurement
• Sensor interface for rotation and torque outputs
• Low-frequency capability down to 0.1 Hz without external sampling clock
– Key Features
• Independent input element and range configuration with selective auto-ranging
• Delta-star conversion for three-phase three-wire systems
• DC ripple factor measurements for voltage and current
• Up to 20 custom arithmetic expressions with user-defined display names
• Direct voltage/current inputs plus external sensor terminals
• High-speed waveform capture with setup and data export
– Typical Applications
Power supply characterization, inverter and converter evaluation, motor efficiency testing, grid harmonics analysis, battery system monitoring, and multi-phase power system diagnostics.
– Compatibility & Integration
USB memory device connectivity for data logging. PC integration supported via dedicated communication interfaces. Suitable for boost converter, inverter, and energy storage system measurements.
