Yokogawa WT110 Digital Power Meter

The Yokogawa WT110 is a single-phase digital power meter engineered for precise measurement of AC and DC power parameters across diverse electrical systems. It measures voltage, current, power, power factor, and frequency with high accuracy and stability, making it suitable for power quality evaluation, equipment characterization, and energy efficiency assessment. The instrument supports multiple wiring configurations - single-phase two-wire (1Φ2W), single-phase three-wire (1Φ3W), three-phase three-wire (3Φ3W), and three-phase four-wire (3Φ4W) - and can be equipped with optional harmonic wave analysis capability.

Technical Specifications

• Reciprocal counting method with ±(0.1% of reading + 1 digit) accuracy


• Range: 10 Hz to 50 kHz across voltage and current inputs (V1, V2, V3, A1, A2, A3)


• Minimum input: >30% of rated range; 20% of measurement range Power Measurement


• Voltage ranges: 0.500 V to 150.0 V (selectable)


• Current ranges: 0.500 A to 20.00 A (selectable)


• Maximum display value: 9999; auto-scales to kW/kVA/kvar when V × I exceeds 1000 W


• Single-phase two-wire configurations support from 0.250 W to 1.200 kW depending on range selection Core Measurements


• Voltage, current, active power, reactive power, power factor, and frequency

Key Features

• Harmonic wave analysis (optional)


• Comparator function for production-line quality control


• Flexible range selection accommodates low-power and high-power loads


• High measurement stability across varying load conditions

Typical Applications

• Household and office equipment power consumption analysis


• Inverter output characterization


• Manufacturing and production-site power quality assessment


• Research and development power measurement

Compatibility & Integration The WT110 accepts inputs from three voltage channels and three current channels, supporting standard single-phase and three-phase wiring topologies. Note: This model was discontinued December 29, 2000; the WT200 is the successor platform.