The Yokogawa WT3004E is a 4-channel precision power analyzer designed for high-accuracy measurement of electrical power parameters in power electronic devices, supplies, inverters, and demanding power applications. It delivers simultaneous voltage, current, and power measurement with ±0.2% reading accuracy and ±0.1% range accuracy across DC to 100 kHz. The instrument integrates harmonic analysis to the 50th order, energy integration functions, and a color LCD display for comprehensive power characterization across development, testing, and evaluation workflows.
Technical Specifications
Measurement Capabilities
• 4-channel simultaneous measurement: voltage, current, active/reactive/apparent power, frequency, power factor, crest factors, peak values, directional active/reactive power, and energy (Wh, varh, VA·h)
• Voltage: 15 V to 1000 V AC+DC; ±0.2% reading ±0.1% range accuracy (DC, 10 Hz to 20 kHz); 1 MΩ input impedance
• Current: 0.1 A to 20 A AC+DC; ±0.2% reading ±0.1% range accuracy (DC, 10 Hz to 20 kHz); 10 mΩ input impedance
• Power: ±0.3% reading ±0.2% range accuracy
• Sampling: up to 100 kS/s (1-channel voltage/current)
• Frequency bandwidth: DC to 100 kHz at rated current
Harmonic Analysis
• Up to 50th order harmonics
• Measures harmonic voltage, current, and power
• 100 kHz resolution
Integration Function
• Modes: Forward, Reverse, Auto
• Trigger options: Continuous, Manual, External Trigger
• Units: Wh, varh, VA·h
Interfaces & Control
• USB Type-A for external storage
• Ethernet 10/100 BASE-TX for remote control and data transfer
• RS-232C
• GW-BASIC compatible command set
Physical
• 430 mm × 177 mm × 575 mm (W × H × D); 15 kg
• 100–240 V AC, 50/60 Hz operation
• Operating: 0°C to 40°C; Storage: -20°C to 60°C
– Key Features
• Simultaneous 4-channel measurement with ±0.2% voltage/current accuracy
• Harmonic analysis extending to 50th order at 100 kHz resolution
• Multiple integration modes with programmable trigger options
• Wide voltage range (15 V to 1000 V) and current range (0.1 A to 20 A)
• Color LCD display for real-time parameter visualization
• DC to 100 kHz measurement bandwidth
– Typical Applications
Power supply evaluation, inverter testing, switching power conversion analysis, renewable energy system characterization, motor drive assessment, harmonic distortion measurement, and power quality validation in industrial and laboratory environments.
– Compatibility & Integration
Ethernet and RS-232C connectivity enable remote operation and automated data acquisition. USB port supports direct file export. GW-BASIC command compatibility allows integration into custom test sequences and legacy control systems.
