Yokogawa WT200

The Yokogawa WT200 is a digital power meter engineered for single-phase AC, DC, and AC+DC power measurements with 0.1% basic accuracy. Operating across DC to 100 kHz, it handles applications from low-frequency equipment to high-frequency inverters. The half-rack form factor (213 mm W × 88 mm H × 350 mm D) delivers high-speed data acquisition at up to 10 readings per second, enabling efficient real-time testing and analysis.

Technical Specifications

• Measurement Accuracy: 0.1% of reading


• Frequency Range: DC, 0.5 Hz to 100 kHz


• Measurement Modes: AC, DC, AC+DC


• Data Update Rate: Up to 10 readings per second


• Voltage Input Ranges: 15 V, 30 V, 60 V, 150 V, 300 V, 600 V (manual); auto-ranging available with 300% sampling threshold and 110% end-of-cycle threshold


• Current Input Ranges (Direct): 5 mA to 20 A across 12 selectable ranges; auto-ranging supported


• Current Input (Shunt): 5–200 mA or 0.5–20 A ranges


• Input Resistance (Voltage): Approximately 2 MΩ


• Input Impedance (Current, 0.5–20 A): Approximately 6 mΩ + 0.1 µH


• Input Impedance (Current, 5–200 mA): Approximately 500 mΩ


• Peak Voltage Handling: Up to 2.8 kV (range-dependent)


• Peak Current (0.5–20 A): Up to 450 A or 300 A RMS


• Peak Current (5–200 mA): Up to 150 A or 100 A RMS


• Integration Function: 1 second to 10,000 hours adjustable


• Supply Voltage: 100 V ± 5% (sine wave)


• Power Consumption: 35 VA max. (100 V supply)

Key Features

• Line filter function for signal conditioning


• Harmonic measurement capability (optional configurations)


• Max-hold function captures peak values for V, A, W, VA, var, Vpk, and Apk


• GP-IB, RS-232-C, and Ext. I/O communication interfaces


• D/A output for data logging

Typical Applications Power quality assessment, harmonic compliance verification, inverter characterization, and equipment efficiency testing across wide frequency and amplitude ranges.

Compatibility & Integration Supports pre-IEEE488.2 commands for automated range configuration and data retrieval via standard laboratory interfaces.