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.
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).
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.
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.
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.)
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.
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.
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.
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.
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.
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
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.
Interfaces and Connections
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
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.
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.
AC/DC Split Core Current Sensor CT1000S
Measure high currents without disassembling existing cabling. Compatible with power analyzers and waveform measurement instruments.
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.
Designing an instrumentation system for high current measurement requires careful consideration of the trade-offs associated with each type of sensing device. The purpose of this application note is to help engineers understand the sensing choices available and the corresponding trade-offs with each technology.
【search key】 WT1, WT18, WT180, WT3, WT30, WT5, WT50, WT500, WT
Total efficiency measurement of EV/PHV
- Power consumption/quality measurements for product design and test
- Design, compliance, and customer information
- Best practices
- Instruments and components
As the manufacturer of the world's first drone to combine Vertical Take Off and Landing (VTOL) and forward flight, ATMOS UAV needed to perform highly accurate motor system testing, while keeping the test time as short as possible. Discover how Marlyn exceeded all expectations in terms of reliability and was successfully launched in an extremely competitive market.
Brochures
- WT1800R Series High performance (4.1 MB)
- CT1000S Split core current sensor (3.2 MB)
Product Overviews
Test and measurement engineering work groups can have differing priorities and requirements, which often results in multiple instrumentation systems and data file formats, as well as incompatible reporting. This lack of effective communication between groups and instruments causes decreased efficiency and quality and increased spending and time to market. Unify test and measurement instrumentation, software, and data across engineering teams with a suite of solutions that caters to the different needs of engineering work groups, including accurate power data, fast sampling rates, long recordings of multiple different input types, and insights into waveform data.
Webinars
- 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
- How to avoid the “gotcha's” of inverter-based measurements
- Computations for field-oriented control
- The integration of CAN bus communications
- Correlations in the frequency domain
- Other advanced motor and drive topics
- A look at multi-phase measurements and measurement techniques
- A review of practical applications
- Real-world examples
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:
You know the basics of electrical power measurements, have set up your dyno, and made key measurements – which is great. But as your motor and drive projects progress, the complexities of system drive requirements can change frequently. Control algorithms, networked communications, and mechanical systems form a complex web of interactions that need sorting. This 60-minute webinar explains how to get past ground-level measurements and delve into comprehensive solutions that leverage test and measurement instruments including power analyzers, high-speed data acquisition, and real-time software.
Topics include:
The technical presentation includes an audience Q&A.
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:
Why should you be concerned with your product’s power system voltage and current harmonics? From an engineering perspective, harmonics produce excessive heat in equipment that causes significant damage and results in inefficient operation. From a business perspective, compliance is an absolute requirement for entry into global markets. To minimize or eliminate these issues and establish acceptable levels of harmonics, numerous power quality standards with specifications and limits for harmonic distortion, such as IEEE 519-2014 and IEC61000-3-2, have been introduced. During this webinar, attendees will gain knowledge on the inner workings of harmonics, learn best practices for accurately measuring harmonics, learn to recognize and distinguish the critical difference between DFT and FFT, and discover important measurement tradeoffs across various test equipment.