WT1800R High-Performance Power Analyzer

Versatility to Bring Innovative Technologies to Market

With the growing focus on generating and converting power more efficiently, the use of renewable energy sources like solar and wind is expanding. Alongside these trends, rapid advances in electric vehicles and energy-efficient technologies make precise measurements 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 to measure power, quality, and efficiency.

Accurate

The WT1800R is the only instrument in its class that guarantees a power accuracy of 0.05% of reading plus 0.05% of range and can analyze harmonics up to the 500th order of a 50/60 Hz fundamental frequency.

Reliable

The stability of the WT1800R ensures precision measurements are accurate and repeatable through the entire testing life cycle.

Versatile

With up to 6 input channels, PC connectivity, and a wide range of display and analysis features, the WT1800R is the ideal measurement solution for a broad range of power efficiency and harmonic analysis requirements.

6 Inputs on a High-Resolution Display

Make simultaneous measurements on up to 6 inputs at 2 MS/s (16 bits). The high-resolution 8.4 inch XGA display allows split-screen viewing up to 6 waveforms and can display up to 12 pages of diverse measurement parameters, making it ideal for efficiency tests of inverter driven motors, renewable energy technologies, and traction applications like pumps, fans, and hybrid/electric vehicles. The unit can also display measurements in vector format or trended over time.

WT1800R Split Screen Viewing

 

Guaranteed Accuracy Across a Wide Range of Conditions

Accurately measure a wide range of voltage, current, and frequency conditions. Basic power (AC measurement) accuracy is guaranteed between 1% to 110% of the selected voltage and current range, which equates to voltages from 15 mV to 1100 Vrms and currents from 0.1 mA to 5.5 Arms (for a 5 A input element) and 10 mA to 55 Arms (for a 50 A input element). The unit is also accurate during large phase shifts and high frequencies thanks to minimized influence of low power factor error (±0.07% of apparent power).

Effective Input Range | WT1800R High-Performance Power Analyzer | Yokogawa Test&Measurement

 

Two Types of Input Elements

Both 5 A and 50 A input elements can be installed in a single unit. This enables engineers to use a single WT1800R for multiple applications such as standby power measurement and the evaluation of various operating modes of the device under test.

Two Types of Input Elements

Two Types of Input Elements

 

Flexible and Automatic Data Updates

Manually set measurement intervals with 9 data update intervals between 50 ms to 20 s or follow fluctuating input frequencies by changing the data update rate automatically. This is useful when measuring devices like motors, where input signal frequency varies with RPM. In addition, during low-speed operation (when the input frequency is 20 Hz or less), data updates every cycle, which is helpful when checking measurement results per motor revolution.

Manually or automatically set measurement intervals

 

Harmonic Analysis

Analyze harmonics up to the 500th order for a 50/60 Hz fundamental, even with a data update interval of 50 milliseconds. The WT1800R features two options for analyzing harmonics in addition to power parameters:

  • Harmonic measurement mode (/G5 option) for fundamental wave, harmonic components, and total harmonic distortion (THD)
  • Dual harmonic option (/G6 option) for side-by-side measurement of harmonics on two different sources (e.g., input and output of inverters, variable speed motors, lighting ballasts, UPS, etc.)

Dual Harmonic Options

 

Motor Evaluation Function

Measure more than just electrical parameters, the motor evaluation function enables measurement of rotation speed and direction, torque, mechanical power, synchronous speed, slip, electrical angle, motor efficiency, and total system efficiency from the analog or pulse outputs of rotation and torque sensors.

Motor evaluation function
 

Measurement for Field-Oriented Control

Permanent magnet synchronous motors (PMSM), which offers the highest efficiency compared to other motor types, are generally controlled using dq-axis parameters (a rotating coordinate system). The WT1800R has enhanced calculation functions that enable computation of Ld and Lq and support measurements required for PMSM control.

Vector Diagram of PMSM

Calculation Function Features of WT1800R
 

DC Power Supply for AC/DC Current Sensors (/PD2 Option)

The WT1800R can be equipped with a DC power supply for the CT series of AC/DC current sensors to measure large currents and improve S/N ratio and noise immunity.

DC Power Supply

 

High-Speed Data Capture

The high-speed data capturing function measures Sigma-Urms, Sigma-Irms, and Sigma-P from DC signal and three-phase devices every 5 ms when external synchronization is OFF or 1 ms to 100 ms when external synchronization is ON, depending on the frequency of the clock signal.

Measured Data with Three Phase Current
Example of measured data with three phase current (Red dots are examples of data measurement at 5 ms intervals)

 

Easy-to-Use Custom Display with Internal Storage

Customized screens allow for visual confirmation of parameters and can be quickly loaded from the internal storage for easy display.

Customized Screen Display
The built-in memory can also be used to store numerical data and other data. Capacity is 1 GB.

 

Correlate Power Consumption and Inverter Waveforms

When efficiency deterioration is observed during motor endurance tests, combining high-precision power and waveform measurements can help identify the cause. Yokogawa’s integrated measurement software platform, IS8000, enables simultaneous display of high-precision power measurements from the WT1800R and waveform data from the DL950 high-speed data logger or DLM5000 oscilloscope. This setup allows for easy, on-screen analysis and correlation between power consumption and inverter waveforms.*1

IS8001/IS8002 enables coaxial display

 

WTViewerEfree Application Software

Easily view, control, and download measurements from your PC with WTViewerEfree, a powerful software that connects the WT1800R to a PC via a communications interface to make numeric, waveform, trend, and harmonic data from the unit more easily accessible.

WTViewerEfree makes data accessible via PC

Interfaces and Connections

Interfaces and Connections | WT1800R High-Performance Power Analyzer | Yokogawa Test&Measurement

Interfaces and Connections | WT1800R High-Performance Power Analyzer | Yokogawa Test&Measurement

Key Applications

The WT1800R is a versatile instrument that unlocks precision power measurement capabilities for researchers, designers, and engineers who work on a wide variety of applications in energy efficiency and conservation and renewable energy, including:

  • Electric, hybrid electric, and plug-in hybrid vehicles
  • Industrial equipment such as inverters, motors, and pumps
  • Renewable energy technologies such as solar and wind power
  • Office and home appliances like air conditioners and refrigerators
  • IT data center equipment like servers, routers, and switches
  • Battery charging and portable devices
  • Ballasts, LEDs, and fluorescent lighting
  • Aircraft power systems
     

Example Application: Inverter and Motor Testing

366924 BNC to BNC 1m Cable

  • 366924 BNC to BNC cable for oscilloscope 
  • 1m BNC wire
  • Simultaneous measurement with 2 units
  • Input external trigger signal

366925 BNC to BNC 2m Cable

BNC-BNC 2m. For connection to simultaneously measurement with 2 units, or for input external trigger signal.

701902/701903 Safety BNC to BNC Cable 1m/2m

  • 701902/701903 Safety BNC to BNC Cable for oscilloscope
  • Safe, high-voltage measurements with DL350, DL950, and SL1000 isolated input modules 
  • 701902: 1000 Vtms-CAT II (BNC-BNC), 1 m
  • 701903: 1000 Vrms-CAT II (BNC-BNC), 2 m

758917 DMM Measurement Lead Set

  • Set of 0.8m long red and black multimeter test leads
  • Used in combination with a pair of optional 758922 or 758929 alligator-clip adapters
  • 1000 Vrms, 32 Arms CAT II

758921 Fork terminal adapter

  • 758921 Fork Terminal Adapters
  • For fitting a 4mm banana plug to a fork terminal
  • One black and one red clip
  • 1000 Vrms-CAT II

A1559WL, A1560WL Dedicated Cable

Dedicated Cables for WT1800E /PD option.

758922 Small Alligator-Clip Adapter 300V

Rated at 300 V. Attaches to the 758917 test leads. Sold in pairs.

A1589WL Direct Current Input Cable

Direct Current Input Cable (with Burden Resistor 2.7 Ohm) for WT1800E /PD2 option.

758923 Spring Hold Safety Terminal Adapter Set

Two adapters in a set (spring-hold type).

B9284LK External Sensor Cable

For connection the external input of the WT3000 to the current sensor.
Length: 50cm

751522/751524 Current Sensor Unit

Current sensor unit accessories for digital power meters and power analyzers.
DC to 100 kHz/1000 a peak guaranteed calibration with power analyzers.

A1628WL Direct Current Input Cable

Direct Current Input Cable (without Burden Resistor) for WT1800E /PD2 option

758924 BNC to Banana Conversion Adapter

For conversion between BNC and female banana plug
Applicable for DL750/DL750P, SL1000 & SL1400.

758929 Large Alligator Clip Adapter 1000V

  • Yokogawa 758929 Alligator Clip Adapter 
  • Rated at 1000V
  • Attaches to 758917 test leads
  • Sold in pairs black/red

758931 Screw-Fastened Safety Voltage Terminal Adapter Set

Screw-fastened adapters. Two adapters in a set. 1.5 mm Allen Wrench.

B8200GD Screw for B8200JQ

Screws for B8200JQ, D-SUB connector

AC/DC Split Core Current Sensor CT1000S

Measure high currents without disassembling existing cabling. Compatible with power analyzers and waveform measurement instruments.

B8200JQ Output connector

D-Sub 9-pin connector with 2 screws
(female on connector side)

B8200JR Load resistor

10 Ω/0.25 W (×4)

751535-E4 Rack mounting kit

RACK MOUNTING KIT For an EIA-compliant Single-housing Rack

A1323EZ, A1324EZ, A1325EZ Shunt resistor boxes

Shunt resistor boxes for WT1800E /PD option.

751535-E5 Rack mounting kit

RACK MOUNTING KIT For an EIA-compliant Single-housing Rack

751535-J4 Rack mounting kit

RACK MOUNTING KIT For an JIS-compliant Single-housing Rack

751535-J5 Rack mounting kit

RACK MOUNTING KIT For an JIS-compliant Single-housing Rack

Overview:

Energy consumption in low-power and standby modes is an important issue due to increased awareness that energy resources are becoming limited and demand for energy-saving household electrical appliances continues to grow. IEC62301 Ed2.0 (2011) and EN 50564:2011 define standby mode as the lowest energy consumption of an appliance not performing its main function, when connected to the mains. IEC62301 Ed2.0 (2011) defines test methods and requirements for both the mains supply and the test equipment. It is crucial that design and test engineers choose highly accurate power measurement tools to confirm that their devices meet these requirements.

Overview:

【search key】 WT1, WT18, WT180, WT3, WT30, WT5, WT50, WT500, WT

Industries:
Overview:

Total efficiency measurement of EV/PHV

Overview:
  • Power consumption/quality measurements for product design and test
  • Design, compliance, and customer information
  • Best practices
  • Instruments and components
Application Note

Webinars

    Overview:

    With ongoing innovations in motor and inverter technologies seeking to advance global decarbonization objectives in the automotive industry, it’s crucial that engineers have a thorough understanding of how to properly analyze these systems.

    This complimentary webinar provides engineering professionals involved in motor and control system development with insights that enable data benchmarking and troubleshooting issues related to energy efficiency in electric vehicle (EV) powertrains.

    Key webinar topics include:

    • Establishing baselines for system efficiency
    • Conducting inverter control signal analysis at the systems level
    • Identifying critical measurements for benchmarking inverter input, inverter output, and motor output
    • Analyzing motor control signals, including torque control variables, positional sensors, and pulse-width modulation (PWM), as well as torque measurements
    Overview:

    Although DC power measurements can be fairly straightforward, complexities with AC power measurements arise when dealing with distorted waveforms, fluctuating power factors, and multiple phases, which introduce intricacies that complicate an otherwise simple measurement process.

    This on-demand webinar provides an informative dive into the various fundamental aspects of power measurement and includes:

    • A look at multi-phase measurements and measurement techniques
    • A review of practical applications
    • Real-world examples

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