The Yokogawa WT500 is a mid-range power analyzer for simultaneous single-phase and three-phase measurements of voltage, current, power, and harmonic components. It measures AC and DC signals concurrently, making it essential for evaluating DC/AC conversion in renewable energy applications. The instrument performs efficiency calculations, transient analysis, and power quality assessment with harmonic measurements to the 50th order. A 5.7-inch color TFT LCD displays numerical values, waveforms, trends, and optional vector/bar graph formats. Data exports directly to USB memory in CSV format.
Technical Specifications
• Voltage Measurement: 0.1 V to 1000 V; 1.5 V to 1000 V; 15 V to 1000 V; selectable 15/30/60/100/150/300/600/1000 V ranges; up to 1000 Vrms
• Current Measurement (Direct): 0.5 A to 40 A; 5 mA to 30 A; up to 40 Arms
• Current Measurement (External Sensor): 50 mV to 10 V selectable input ranges
• Basic Power Accuracy: ±0.1% of reading ±0.1% of range; ±0.2% alternate specification
• Measurement Bandwidth: DC to 100 kHz; 0.1 Hz to 1 MHz
• Sampling Frequency: Approximately 100 kS/s
• Crest Factor: 3 or greater
• Internal Memory: 20 MB or 2 GB options
• Power Supply: 100–240 VAC (auto-switching), 50/60 Hz
• Power Consumption: Max 80 VA
– Key Features
• Simultaneous AC/DC signal measurement for renewable energy and power conversion analysis
• Harmonic analysis up to 50th order with optional /G5 power quality module
• Total harmonic distortion (THD) measurement without mode switching
• Dual efficiency calculations via input/output element selection
• Integration functions for charge/discharge current and bought/sold power evaluation
• Average active power over user-defined integration intervals
• Transient analysis capability
– Typical Applications
• Power supply and inverter testing
• Motor efficiency characterization
• Energy-saving equipment evaluation
• Photovoltaic power generation system analysis
• Secondary cell charge/discharge profiling
– Compatibility & Integration
• USB data export (CSV format)
• USB, GP-IB, Ethernet, and RS-232C communication interfaces (optional)
• External USB memory storage up to 1 GB
