Yokogawa WT1030

The Yokogawa WT1030 is a digital power meter engineered for precision AC and DC power measurements across industrial and laboratory environments. This instrument delivers 0.2% fundamental accuracy while supporting single-phase two-wire, single-phase three-wire, three-phase three-wire, and three-phase four-wire configurations. The WT1030M variant incorporates motor analysis capability, accepting torque meter outputs to compute total motor efficiency.

Technical Specifications

Voltage measurement spans 0 to 1000 V rms across eight ranges (15 V to 1000 V). Direct current input accommodates 0 to 20 A across six ranges (0.5 A to 20 A). Both voltage and current channels operate from DC to 300 kHz with power measurement bandwidth to 200 kHz. The A/D converter samples at approximately 60 kHz. Input impedance measures approximately 2.4 MΩ with 13 pF capacitance. Continuous maximum allowable input reaches 4.0 kV peak or 2.8 kV RMS. Frequency measurement capability extends from DC to 300 kHz. Harmonics analysis operates at fundamental frequencies from 10 Hz to 440 Hz, reporting harmonic components, distortion factor, phase angles, and powers.

Key Features

• Measures voltage, current, active power (W), apparent power (VA), reactive power (var), power factor, phase angle, and frequency


• Harmonics analysis from 10 Hz to 440 Hz fundamental frequency


• Optional integration function for continuous momentary power integration


• Optional waveform output via D/A converter at approximately 60 kHz conversion speed


• Exponential and moving averaging (8 to 256 averages, user-selectable)


• Accuracy specifications subject to power factor, line filter status, and operating frequency

Typical Applications Motor characterization and efficiency testing. Electronic device and appliance evaluation. Industrial equipment power analysis. Energy variation measurement with optional integration capability.

Compatibility & Integration The WT1000 series architecture supports torque meter signal input on the WT1030M variant for integrated motor efficiency calculations.