WT5000 Precision Power Analyzer
Superb accuracy has never been easier, thanks to multi-channel measurements, custom triggers and computations, advanced harmonic analysis and filtering, and user-friendly operation. The Yokogawa WT5000 precision power analyzer is a versatile platform that delivers extraordinary precision and exceptional performance for the most demanding applications. Equipped with seven user swappable and reconfigurable input elements plus four motor channels, the WT5000 high accuracy power meter is an ideal instrument for electrical and mechanical power and efficiency measurements. The Yokogawa power analyzer is now listed as an accepted device for SPEC Power® testing and IEC harmonic and flicker standards. Its out-of-the-box software solution, highly responsive touchscreen, and intuitive menu operations for simple connection, configuring, and use make the WT5000 an ideal instrument for your testing needs.
Awards
Test Product of the Year
The WT5000 was awarded "Test Product of the Year" at the 2019 Elektra Awards.
Power Product of the Year
Yokogawa's WT5000 Precision Power Analyzer won the prestigious “Power Product of the Year” trophy at the second annual Electronics Industry Awards.
Reliable Today, Ready for Tomorrow
- Make measurements you can trust with a guaranteed accuracy of *0.03%
- 10MS/s, 1MHz power bandwidth, 18 bit resolution enabled by Yokogawa isoPRO™ fiber optic isolation technology
- Simultaneously analyze 7 phases with one chassis, producing over 1000 power parameters real-time
- Precision current measurement guaranteed by innovative symmetric coaxial shunt design
*basic power accuracy - Stream raw waveform data up to 22 items at a rate of up to 2 MS/s for detailed waveform analysis
Innovate with Precision, Flexibility and Confidence
- Modular architecture with 7 user swappable and reconfigurable input elements
- High-accuracy element, built-in DC power supply, enables both easy wiring and reliable high-precision, large-current measurements
- Up to 10ms data update, up to 50ms data update when using data streaming
- Follows frequency fluctuations in input signals by auto update mode
- Synchronize multiple chassis for large multi-phase systems
- For motors and generators up to 4 speed and torque inputs** can be used measuring total system efficiency
- Isolate and measure harmonic losses with configurable advanced filtering for simultaneous wideband and harmonic power analysis
**can be configured as auxiliary inputs - Stream raw waveform data up to 22 items at a rate of up to 2 MS/s for detailed waveform analysis
Precision Made Easy
- Highly responsive 10.1 inch electrostatic capacitive touch screen
- Intuitive and easy menus to connect, configure, measure and record
- Modular interconnect design putting safety first
Unmatched Accuracy
The WT5000 is the world’s most accurate precision power analyzer with a basic power accuracy of ±0.03%. Its accuracy specifications are guaranteed from 1% to 130% of the selected voltage and current ranges. With minimum influence of low power factor (0.02% of apparent power) the unit is also accurate at large phase shifts and frequencies.
- AC power accuracy: 0.01% of reading + 0.02% of range
- DC power accuracy: 0.02% of reading + 0.05% of range
- 10 MS/s 18 bit ADC
Multi-channel Measurements
Measure from up to 7 different power phases at 10 MS/s (18 bits). The high resolution, 10.1 inch WXGA display allows split screen viewing of up to 7 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 electric vehicles. Measurements are also displayed in vector format or trending in time.
Current sensor module with DC power supply
Use of the internal DC power supply for AC/DC current sensors simplifies the preparations before measurement and the measurement setup only requires the current sensor and a connecting cable. Using an external DC power supply and additional wiring is no longer required. There are three sensor connection cable lengths available; i.e., 3 m, 5 m, and 10 m.
*Firmware version 3.01 or later is required.
760903 Current Sensor Element
Example of connection to CT1000A
Intuitive Operation
Operable by touch and/or hardware hot-keys independently, the WT5000 offers a seamless and intuitive experience that makes connecting, configuring and measuring easier than ever before. The 10.1 inch WXGA touchscreen delivers excellent noise immunity even in high noise environments such as motors and inverters.
Additional Touch Operations
The operability of the touch panel has been improved. "Time / div" can be set by pinch / out. Also, you can flick the waveform display contents.
Advanced Filtering
In addition to low pass frequency filters and line filters, the WT5000 features advanced filtering capabilities that provide unprecedented control to analyze even the toughest of waveforms with precision.
- Synchronization source filter: Instead of synchronizing to zero crossings, users can select any specific point of the synchronization source signal.
- Enhanced frequency filter: Allows users to simultaneously measure fundamental and switching frequencies without influencing any other parameter.
- Digital Parallel Path filters: Supported by a high frequency anti-aliasing filter, two separate line filters for normal and harmonic measurements ensures accuracy without aliasing in wide band and harmonic measurements. Users can limit the number of harmonic orders to eliminate attenuation in low bandwidth measurements.
Advanced Harmonic Analysis
Evaluate and compare input and output harmonics of inverters, motors or power conditioners up to the 500th order. The WT5000 allows users to not only measure harmonics and power simultaneously but also offers side by side comparison of harmonics from two different input sources.
The effects of noise and aliasing are minimized by antialiasing and line filters with Digital Parallel Path technology allowing simultaneous power analysis of wide band and narrow band components.
Harmonics Regulation Test
Combined with the /G7 option and IEC Harmonic /Flicker measurement software, the WT5000 measured harmonic data can be saved into a PC and tested according to IEC regulations. To support large equipment over 16 A/phase (IEC61000-3-12) the CT200 current sensor model can be used.
- Harmonics: EN61000-3-2, IEC61000-3-2, EN61000-3-12, IEC61000-3-12 and JIS C 61000-3-2
Numeric and Waveform Synchronized Data
The waveform data is streamed without any gaps up to 2 MS/s and is synchronized with the numerical data. Abnormal findings in numerical data can be directly linked and be evaluated in the waveform data. For example, one can find numeric parameter variations caused by the influence of imposed high-frequency noise.
Custom Triggers and Computations
Define and use event triggers and custom computations as per application needs. The event trigger function allows users to set limits to capture readings that fall within or outside a specific range of power, current or other parameters. Users can also define and use up to 20 different expressions for custom calculations. Data that meets the trigger conditions can be stored, printed, or saved to a USB memory device.
Follows frequency fluctuations in input signals by auto update mode
This feature can follow fluctuating input frequencies without gaps by changing the data update rate automatically when measuring devices like motors whose input signal frequency fluctuates with changes in rotation speed. It can cover from frequencies as low as 0.1Hz. In addition to constant-interval update mode of 10ms-20s, “Auto update mode”, which updates data in sync with the cycle of input signal, is now available. This new feature is useful for continuous measurement, such as automated testing.
Easy setup menu
Current range, various filters, data update rate, and measurement period can be automatically switched according to the measurement scene.
The measurement scene can be selected from among "50/60Hz," "DC," "PWM," "High Frequency," and "General.
After the automatic setting, the switched items can be checked at a glance and the settings can be easily adjusted.
Wiring with delta conversion useful for motor parameter measurement
When three-phase delta wiring is used, the results of converting to phase voltage using delta-star conversion can be used to measure harmonics, display waveforms on screen, and output data. (When using star connections, it is possible to measure harmonics using the result converted to line voltage using star-delta conversion.)
It can calculate the fundamental wave components of phase voltages required for measuring motor parameters (Ld, Lq), and can be used to evaluate synchronous motors.
Electric Vehicle Development
Overview
Between 16 to 18% of the total charge of an electric car is consumed by electric drive system losses. Electric and hybrid car manufacturers therefore need to accurately evaluate motor and inverter control in order to achieve higher precision and greater efficiency. Additionally, the accurate analysis of inverter waveforms without interference from switching noise is a key part of evaluating the motor drive circuit.
Key requirements:
- Multi-phase measurements from battery, inverter and motor
- Evaluation of motor characteristics such as torque, rotation speed and direction, slip and electrical angle
- Battery charging/discharging characteristics
- Harmonic analysis of inverter signals at various rotation speeds
The WT5000 Advantage
With high accuracy, multi-channel power measurements, evaluation of up to 4 motors and harmonic comparison capabilities, the WT5000 helps automotive engineers improve conversion efficiency, shorten charging times and improve driving range.
Guaranteed accuracy in multichannel measurements
It enables simultaneous measurements of voltage, current, power, torque, rotation speed, electrical angle and mechanical power.
Motor evaluation and mechatronic efficiency
Measure rotation speed, torque, and output (mechanical power) of motors from analog/pulse inputs of rotation or torque sensors. A single WT5000 can be configured for synchronized measurements from up to 4 motors simultaneously.
Battery charging & discharging characteristics
Integration of Instantaneous positive and negative values of energy allows the evaluation of battery charging and discharging characteristics.
Harmonics Analysis & comparisons
With the ability to measure harmonics up to the 500th order even at low rotation speeds, the WT5000 supports harmonic analysis without the need for an external sampling clock.
Renewable Energy Development
Overview
Energy generated by photovoltaic cell modules and wind turbines is converted from DC to AC by a power conditioner. Minimizing losses in these conversions is key to improve the efficiency of the overall energy system.
Key requirements:
- Multi-phase measurements from boost converter, inverter and storage battery
- Evaluation of maximum power and instantaneous peak values
- Energy bought and sold in grid
- Battery charging/discharging characteristics
- Harmonic analysis of inverter signals at various generator speeds
The WT5000 Advantage
WT5000 helps engineers working in the development of renewable energy solutions, to improve conversion efficiency by offering precision insights in charging, discharging, storage and overall efficiency.
Multi-channel Power measurements
Evaluate Power conditioner efficiency with simultaneous measurements from the inputs and outputs of boost converter, inverter, and storage battery. With measurement capabilities from up to 7 input elements the WT5000 is ideal for voltage, current, power, and frequency (for AC) before and after each converter, as well as converter efficiency and charging efficiency.
Instantaneous peak power
In photovoltaic power generation, an Maximum Power Point Traker (MPPT) controller varies the voltage to maximize energy harvested from the solar panel. The WT5000 is capable of measuring not only the voltage, current, and power but also the voltage, current, and power peak values plus (+) and minus (−) sides, respectively
Energy Bought/Sold and Charged/Discharged
The WT5000E provides a current integration (q), apparent power integration (WS), reactive power integration (WQ), as well as effective power integration capable of integration in the power sold/bought and charge/discharge modes.
Harmonics Analysis & comparisons
Voltage fluctuations and harmonics flow into the power systems due to reverse power flow. The harmonic measurement function enables measurement of harmonic components to compute and display total harmonic distortion (THD) and harmonic distortion factor.
Inverter/Motor Drives
Overview
Motor drive technology has become more complex in recent years, pure sine-wave PWM is less common, and cases where the mean voltage differs greatly from the fundamental voltage waveform, are more frequent.
Key requirements:
- Multi-phase measurements from battery, inverter and motor
- Evaluation of motor characteristics such as torque, rotation speed and direction, slip and electrical angle
- Harmonic analysis of inverter signals at various rotational speeds
The WT5000 Advantage
With high accuracy, multi-channel power measurements, motor evaluation and harmonic comparison capabilities, the WT5000 helps engineers in motor and drive development to improve power consumption and conversion efficiency in inverter/motor drive systems.
Guaranteed accuracy across a wide range
The WT5000 guarantees a basic power accuracy of ±0.03%, between 1% to 130% of the selected voltage and current measurement ranges, at 50/60 Hz.
Simultaneous measurements from the inputs and outputs of boost converter, inverter, and storage battery
Inverter and motor efficiency
In addition to computing power conversion efficiency of inverter and motor (up to 7 power inputs), the WT5000, also allows the measurement of rotational speed, torque, and output (mechanical power) from the analog/pulse inputs of rotation or torque sensor.
Harmonics Analysis & comparisons
With the ability to measure harmonics up to the 500th order even at low rotation speeds the WT5000 supports harmonic analysis without the need of an external sampling clock.
Magnetic Characteristics Testing
Overview
In transformer or reactor development, the WT5000 can be used to evaluate magnetic material characteristics using Epstein frame system.
Key requirements:
- High precision measurements of primary coil current and secondary coil voltage is needed.
- High accuracy in low power factor is needed.
- The magnetic flux density B and AC magnetic field H are key parameters to calculate iron loss.
The WT5000 Advantage
Highest voltage and current accuracy
WT5000 provides highest power accuracy:
0.01% of reading + 0.02% of range (50/60 Hz)
High accuracy at low power factor
Effect of Power Factor of WT5000:
0.02% of S (0.5 A or more)
0.07% of S (200 mA or less)
Power Calibration
Overview
For customers who use a large number of power meters, WT5000 can be used as a reference standard for periodic in-house calibration of power measurement instruments, such as the WT300E series and WT500.
Key requirements:
- Sufficient power accuracy is needed for power measurement instruments.
- Power factor is adjustable, and the accuracy in low power factor is guaranteed.
The WT5000 Advantage
Highest power accuracy
WT5000 provides highest power accuracy:
0.01% of reading + 0.02% of range (50/60 Hz)
High accuracy at low power factor
Effect of Power Factor of WT5000:
0.02% of S (0.5 A or more)
0.07% of S (200 mA or less)
- Only use the WT5000 precision power analyzer to measure parameters like current, voltage, and power.
- Check that the instrument and its protection functions are in proper working condition before use.
- Use a power supply with the correct voltage for the high accuracy power meter's rating, and don't use a power supply that exceeds its maximum voltage.
- Always use the right power cord and plug.
- Ensure protective grounding.
- Don't use the WT5000 power analyzer around flammable gases or vapors.
- Consult the instruction manual for full guidance on the front, rear, top, and touch panels, panel keys, system configurations, handling, installation, setup, wirings, inputs and outputs, troubleshooting, and more.
760903 Current Sensor Element
Current Sensor Element
Firmware version 3.01 or later of WT5000 main frame is required.
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
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
B9284LK External Sensor Cable
For connection the external input of the WT3000 to the current sensor.
Length: 50cm
758922 Small Alligator-Clip Adapter 300V
Rated at 300 V. Attaches to the 758917 test leads. Sold in pairs.
366925 BNC to BNC 2m Cable
BNC-BNC 2m. For connection to simultaneously measurement with 2 units, or for input external trigger signal.
758929 Large Alligator Clip Adapter 1000V
- Yokogawa 758929 Alligator Clip Adapter
- Rated at 1000V
- Attaches to 758917 test leads
- Sold in pairs black/red
CT60/ CT200/ CT1000/ CT1000A/ CT2000A AC/DC Current Sensor
AC/DC current sensors capable of highly accurate measurement starting in DC range.
AC/DC Split Core Current Sensor CT1000S
Measure high currents without disassembling existing cabling. Compatible with power analyzers and waveform measurement instruments.
758931 Screw-Fastened Safety Voltage Terminal Adapter Set
Screw-fastened adapters. Two adapters in a set. 1.5 mm Allen Wrench.
761951 Safety Terminal Adapter Set
Screw-fastened type adapters for 30 A element. Black/Red two adapters in a set.
761952 Safety Terminal Conversion Adapter Set
Female-female type adapters for 5 A element. Black/Red two adapters in a set.
761953 Safety Terminal Adapter Set
Two adapters to a set for 5 A current
(screw-fastened type using B9317WD)
Measuring transformer loss helps ensure safer operation and optimizes delivery of electricity. During testing, low power factor signifies high core losses and requires specialty instruments to more accurately measure power.
Maximum torque per ampere (MTPA) is an optimization strategy for the control of electric motors and drives that employ field-oriented control (FOC), particularly with electric vehicles (EVs) and industrial automation applications. The goal of MTPA is to achieve the maximum possible torque output from a motor for a given current input.
Maximum power point tracking (MPPT) charge controllers play a crucial role in the optimization of renewable energy system efficiency and performance. Through dynamic tracking of a renewable energy source’s maximum power point, an MPPT controller enables more efficient energy harvesting, faster charging, and adaptability to changing environmental conditions.
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.
【search key】 WT5, WT50, WT500, WT
ANIS8000APP04-01EN
【search key】 WT1, WT18, WT180, WT3, WT30, WT5, WT50, WT500, WT
Detailed measurement methods, supply voltage settings, and others are specified for the harmonic/flicker standard test.
- IS8000 Integrated Software Platform
- Measure current waveform using oscilloscope
ANIS8000APP02-01EN
Government agencies that define the standardization of energy efficiency metrics continue to be a driving force behind the development of the next generation electric vehicle powertrains. These metrics require manufacturers to have high confidence in their measurements and motivate the optimization of efficiency.
- Power Analyzer Accuracy and Basic Uncertainty Calculator from Yokogawa Test&Measurement
- Determine uncertainty in voltage, current, and active power (watts) measurement values
- Various frequency ranges and wiring systems
This training module covers the following topics:
- Introduction & Installation
- Connecting to Instrument
- Setup, Measure, and Analyze
- File Operations: Saving and Loading Data
- Video Demonstrations
Brochures
- WT5000 Precision Power Analyzers (6.3 MB)
- Specifications WT5000 Precision Power Analyzers (1.2 MB)
- WT5000 Precision Power Analyzers /DS option, /G7 option (846 KB)
- Current Sensors & Probes CT2000A /CT1000A /CT1000 /CT200 /CT60 /751552 (2.5 MB)
Instruction Manuals
- WT5000 Precision Power Analyzer Features Guide (3.6 MB)
- WT5000 Precision Power Analyzer User's Manual (9.9 MB)
- WT5000 Precision Power Analyzer Getting Started Guide (8.1 MB)
- WT5000 Precision Power Analyzer Communication Interface User’s Manual (3.0 MB)
- Harmonic Measurement Software for WT5000 (IEC 61000-3-2 Compliant) User's Manual (4.8 MB)
- Voltage Fluctuation/Flicker Measurement Software for WT5000 (IEC 61000-3-3 Compliant) User's Manual (3.5 MB)
- Voltage Fluctuation/Flicker Measurement Software for WT5000 (IEC 61000-3-11 Compliant) User's Manual (3.6 MB)
- Harmonic Measurement Software for WT5000 (IEC 61000-3-12 Compliant) User's Manual (4.0 MB)
- Harmonic Measurement Software for WT5000 (with Power Supply Function, IEC 61000-3-2 Compliant) User's Manual (887 KB)
- Voltage Fluctuation/Flicker Measurement Software for WT5000 (with Power Supply Control Function, IEC 61000-3-3 Compliant) (849 KB)
- Voltage Fluctuation/Flicker Measurement Software for WT5000 (with Power Supply Control Function, IEC 61000-3-11 Compliant) (917 KB)
- Harmonic Measurement Software for WT5000 (with Power Supply Function, IEC 61000-3-12 Compliant) User's Manual (864 KB)
- Model 760991 Additional Option License for WT5000 User’s Manual (282 KB)
Software
- IS8000 Integrated Software Platform
- IS8010 IEC Harmonic/Flicker Software
- WTViewerE 761941
- WTViewerEfree Software
- Power Consumption Measuring Software
- Harmonic/Flicker Measurement Software for the WT5000 Precision Power Analyzer
- TMCTL
- USB Drivers
- WT5000 Sample Programs
- LabVIEW Drivers for WT5000 ( NATIONAL INSTRUMENTS Web Page )
Firmware
Drawings
- Precision Power Analyzer (1013 KB)
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.
The current sensor element for the Yokogawa Test&Measurement WT5000 Precision Power Analyzer is ideal for applications requiring a current transformer for high-current measurements. The internal DC power supply simplifies preparations before measurement, requiring only a connecting cable and eliminating the external power supply.
The WT5000, an industry-leading power analyzer, features seven field-removeable elements, 10 MS/s, 1 MHz power bandwidth, 18-bit resolution, and 0.03% basic power accuracy. Yokogawa Test&Measurement continues to innovate on the platform, enabling /D7 data streaming, /G7 harmonics, and flicker analysis.
The new current sensor element replaces the traditional current inputs and includes a sensor input terminal with integrated ±15V power supply, eliminating the need for an external power supply. The isolated voltage terminals remain the same as the 5A and 30A elements.
How-tos
- How To: Yokogawa WT5000 Power Analyzer Current Connectors
- High current power/wire connectors
This video demonstrates how to test to an IEC standard (IEC 61000) using a Yokogawa Test&Measurement WT5000 Precision Power Analyzer and the harmonic flicker testing software. The software automates the process of judging if the device under test is compliant with the chosen standard and allows you to output the necessary test reports for your records.
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
- 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:
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 high-precision power analyzer with seven input elements and ±0.03% measurement accuracy for the development of highly efficient electric vehicles and renewable energy systems–
- For the efficient development of electric vehicles (EVs) and renewable energy-related equipment -