Specifications
Parameter Specification
Model Yokogawa WT1800E (configurable with 1-6 input elements)
Power Accuracy ±0.03% of reading (45-66 Hz, specific conditions)
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/50 A ranges)
External sensor: Scalable for current clamps/shunts
Bandwidth DC, 0.1 Hz to 1 MHz
Basic Accuracy ±0.05% reading + ±0.05% range (45-66 Hz)
Power Factor Range 0.0000 to 1.0000 (capable of ultra-low power factor measurement)
Harmonic Measurement Simultaneous measurement up to 500th order (1 MHz bandwidth)
Integration Function Energy measurement (Wh, Ah), time, average power
Data Update Rate Max. 500 ms (2 readings/s) for all inputs
10 ms for selected inputs (transient analysis)
Display 8.4-inch WVGA TFT color touchscreen (800 × 600 pixels)
Interfaces LAN, USB (Device & Host), GPIB (optional), D/A Output (optional)
Operating Temperature 0°C to +40°C
Dimensions (W×H×D) 434 × 177 × 520 mm (excluding protrusions)
Weight Approx. 15 kg (6-element unit)
Key Features
Ultra-high precision: ±0.03% power accuracy for reliable measurements

Wide bandwidth: DC to 1 MHz for high-frequency switching devices (GaN, SiC)

Multi-channel flexibility: 1-6 input elements for complex system measurements

Low power factor capability: Accurate measurement down to 0.0001 PF

Advanced harmonic analysis: Simultaneous 500th order measurement

Energy integration: Wh/Ah measurement for efficiency evaluation

Large touchscreen interface: Excellent visualization and operation

Comprehensive interfaces: LAN, USB, GPIB for automated testing