Engineered for demanding electrical and mechanical power efficiency testing in electric vehicle drives, inverters, solar photovoltaics, and standby power compliance.
Extremely Low Current Measurement Capability Down to 50 μAmps up to 40 Arms
The WT300E series digital power analyzer provides extremely low current measurement capability down to 50 micro-Amps, and a maximum of up to 26 Amps RMS (40 Amps RMS on WT310EH). This instrument is ideal for engineers performing stand-by power measurements, Energy Star®, SPECpower, and IEC62301 / EN50564 testing, battery charger testing, and other low-level power measurements.
With a wide range of functions and enhanced specifications, the WT300E allows handling of all measurement applications from low frequency to high frequency inverters using a single power meter.
The WT300E series with a fast display update rate of 100ms offers engineers a short tact time in their testing procedures. Basic accuracy for all input ranges is 0.1% rdg + 0.05% rng (50/60Hz) and DC 0.1% rdg + 0.2% rng.
Measures Voltage (U), Current (I), Power (P), Frequency, Integration (+/-), Harmonics components, and THD simultaneously with max 100ms cycle without changing measurement mode. Accompanied by WTViewerFreePlus software (monitors & saves 200 parameters).
Features high-speed automatic ranging in integration mode to measure power consumption and standby power without repeating tests when input levels exceed initial range settings.
Simultaneous parameter measurement reduces tact times and testing costs on production lines. Half-rack size helps build smaller test systems with higher ROI.
Equipped with USB, RS-232 or GP-IB, Ethernet (/C7) with Modbus/TCP support, and D/A output for data recording and flexible remote control.
Simultaneous DC & AC Power Conversion & Solar Integration Measurement
The WT500 Power Analyzer excels at single- and three-phase power measurements. Standard features include a color TFT display and USB interface for communications and memory storage. The instrument has a basic power accuracy of 0.1%, maximum inputs of 1000 V, 40 A, and a measurement bandwidth of DC to 100 kHz.
Evaluation of DC/AC signal conversion technology is critical in renewable energy markets (solar, wind, inverters). With inputs from 2 or more elements, the WT500 measures DC and AC signals simultaneously to calculate input-to-output efficiency.
Equipped with separate integration functions that evaluate charge and discharge currents for secondary cells, as well as bought and sold power in photovoltaic power generation systems.
Saves measured data directly to USB memory in CSV or binary format (up to 1 GB). Saved CSV files open seamlessly in general-purpose applications like Excel for immediate graphing.
Measures RMS voltage, RMS current, active power, and harmonic components up to the 50th order simultaneously. Confirms THD distortion factor without switching measurement modes.
Calculates individual phase voltages and phase currents from line voltages measured in 3-phase 3-wire (3P3W/3V3A) systems—ideal for DUTs with no neutral line.
Class-Leading ±0.038% Total Power Accuracy for Electrification & Decarbonization R&D
Achieving a decarbonized society requires greater energy efficiency, wider adoption of renewable energy, and continued innovation in electrification technologies. Leveraging Yokogawa's long-standing expertise in precision measurement, the WT1500 Precision Power Analyzer delivers the accuracy, flexibility, and system integration capabilities needed for advanced power evaluation.
The WT1500 delivers class-leading ±0.038% total power accuracy for both DC and 50/60 Hz measurements, maintaining high precision even at low power factors for precise efficiency evaluation in no-load inverter testing. Accuracy is guaranteed over a wide operating temperature range of 23°C ±5°C.
Selectable High Voltage (HV) elements support direct measurements up to 2000 V, while Wide Bandwidth (WB) elements deliver up to 2 MHz bandwidth. Both element types can be mixed within the same instrument.
Multi-unit synchronization expands a single system up to 20 power channels and 20 motor channels, with a master unit centrally configuring, controlling, and acquiring data.
Real-time CAN/CAN FD communication streams measurement data directly to host vehicle/test rack systems, enabling seamless integration into automated test environments.
Easy connection with Yokogawa's wide range of current sensors, featuring native phase compensation and offset cancellation support.
Versatility to Bring Innovative Technologies to Market
With the growing focus on generating and converting power more efficiently, renewable energy sources like solar and wind are expanding rapidly alongside electric vehicles and energy-efficient technologies. Precise measurements are essential to detect even the smallest energy losses. Whether analyzing multiphase inputs during motor and drive design or meeting stringent efficiency standards for photovoltaic inverters, the WT1800R high-performance power analyzer offers engineers a precise and reliable tool.
Guarantees 0.05% rdg + 0.05% rng power accuracy and analyzes harmonics up to the 500th order of 50/60 Hz.
Instrument stability ensures precision measurements remain repeatable throughout entire testing lifecycles.
Up to 6 input channels with PC connectivity, versatile display modes, and deep harmonic analysis.
World's Leading Power Analyzer with *0.03% Accuracy & 7 Swappable Modular Elements
Experience unmatched precision with the Yokogawa WT5000, the world's leading precision power analyzer. Engineered for demanding electrical and mechanical power and efficiency testing, the WT5000 provides multi-channel measurements, advanced harmonic analysis, and intuitive operation through user-friendly software and a responsive touchscreen. With seven swappable input elements, four motor channels, and approval for SPEC Power® and IEC standards, the WT5000 is the ultimate platform for high-accuracy power measurements.
10 MS/s sampling rate, 1 MHz power bandwidth, and 18-bit analog resolution enabled by Yokogawa's isoPRO™ fiber optic isolation technology. Provides high noise immunity and safety isolation for high-voltage inverter and EV powertrain testing.
Modular architecture with 7 user-swappable input elements. High-accuracy elements include built-in DC power supplies for current sensors, enabling clean wiring and reliable large-current measurements.
Stream raw waveform data up to 22 items at rates up to 2 MS/s for detailed waveform analysis. Data update rates down to 10 ms (up to 50 ms during streaming).
Measures total mechanical and electrical system efficiency with up to 4 speed and torque inputs (configurable as auxiliary inputs).
Simultaneously analyzes 7 phases producing over 1000 power parameters in real-time. Configurable advanced filtering isolates wideband and harmonic losses.
