Specifications
Parameter Specification
Model Yokogawa WT1802E
Power Accuracy ±0.05% of reading (45-66 Hz)
Voltage Range 1.5 V to 1000 V (extendable to 2000 V with optional sensor)
Current Range Direct input: 10 mA to 50 A (5 A and 50 A ranges)
External sensor: Supported
Bandwidth DC, 0.1 Hz to 1 MHz (-3 dB)
Basic Accuracy ±0.05% reading + ±0.05% range (45-66 Hz)
Power Factor Range 0.0000 to 1.0000
Harmonic Measurement Up to 500th order
Integration Function Energy measurement (Wh, Ah)
Data Update Rate 500 ms (2 readings/s) for all inputs
10 ms for selected inputs
Display 8.4-inch TFT color display (800 × 600 pixels)
Interfaces LAN, USB (Host & Device), Optional GPIB
Operating Temperature 0°C to +40°C
Dimensions (W×H×D) 434 × 177 × 520 mm
Weight Approx. 12 kg
Key Features
High precision: ±0.05% power accuracy for reliable measurements

Dual-channel capability: Two independent isolated input channels

Wide bandwidth: DC to 1 MHz for high-frequency applications

Low power factor measurement: Capability down to 0.0001 PF

Advanced harmonic analysis: Up to 500th order measurement

Energy integration: Wh/Ah measurement functionality

Large display: Clear visualization of parameters and waveforms

Comprehensive interfaces: LAN, USB, optional GPIB

Typical Applications
Motor and inverter efficiency testing

Power supply characterization

Energy efficiency measurements

Industrial power quality analysis

Research and development projects

Manufacturing quality control