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YOKOGAWA Europe
BU7603_00E_060

BU7603_00E_060

Product catalog summary

Overview: The WT3000 Precision Power Analyzer by Yokogawa is a high-end power meter designed for precise power measurement, with a basic power accuracy of ±0.02% of reading. It is suitable for high-efficiency motor evaluations and power supply quality measurements.

Specifications:

Basic Power Accuracy: ±0.02% of reading
Frequency Range: DC, 0.1 Hz to 1 MHz
Voltage Range: 15V to 1000V
Current Range: 0.5A to 30A (direct input), 50mV to 10V (external input)
Data Update Rate: 50 ms to 20 sec
Interfaces: GP-IB, Ethernet, RS-232, USB

Features:

Large 8.4-inch LCD for enhanced readability
Simultaneous measurement with 2 units (8 power input elements)
Advanced computation functions including waveform computation and FFT analysis
IEC61000-3-2 harmonic measurement and IEC61000-3-3 voltage fluctuation/flicker measurement
Internal memory with approximately 30MB storage capacity

Functions:

User-friendly controls with simple range settings and multiple display formats
Integration functions for active, apparent, and reactive power
Compensation functions for wiring loss and efficiency
Data storage in binary or ASCII format on PC card or USB memory

Options:

Advanced computation for harmonic and flicker measurement
Built-in printer for data and waveform memos
Additional frequency measurement channels
VGA output for larger screen viewing

Applications: The WT3000 is ideal for applications requiring high precision in power conversion efficiency measurements, such as inverters and high-efficiency motors. It supports a wide range of external interfaces, making it adaptable to various equipment and network environments.

Measurement Capabilities: The WT3000 can perform simultaneous measurements of voltage, current, and power, including Total Harmonic Distortion (THD). It supports high-frequency and harmonic measurements, phase voltage measurement without a neutral line, and evaluation of torque speed characteristics.

Optional Features: The WT3000 offers several optional features to enhance its functionality, including harmonic measurement, flicker measurement, and various software tools like WTViewer for data analysis.

Accessories: A variety of accessories are available for the WT3000, including current sensors, adapters, and cables, to facilitate different measurement setups and enhance the analyzer's capabilities.

Safety and Usage Notes: The document advises caution due to the risk of electric shock when handling the analyzer's metal parts. It also provides guidelines for using various adapters and sensors to ensure accurate and safe measurements.

Measurement Techniques:

Voltage Input Terminal: Utilizes a DC power supply and load resistors for accurate voltage measurement.
Clamp-on Probe: Describes the use of direct input terminals for current measurement, highlighting various connection examples.

Crest Factor:

The crest factor is defined as the ratio of the waveform peak value to the RMS value. The document explains how to measure signals with crest factors larger than the instrument's specifications by adjusting the measurement range.
Supported crest factors include 3 and 6, with specific voltage and current ranges provided for each.

Specifications and Functions:

Power Accuracy: Basic power accuracy is specified for different frequency ranges, with detailed percentage errors provided.
Voltage and Current Ranges: Lists the available ranges for both voltage and current inputs, with distinctions made for direct and external sensor inputs.
Display and Interface: Features an 8.4-inch TFT color LCD for displaying numerical values, waveforms, and trends. Communication interfaces include USB, Ethernet, and GPIB.

Calculation Functions:

Includes user-defined functions for creating equations and calculating numerical data, with up to 20 functions available.
Details on the calculation of apparent power, reactive power, power factor, and phase angle are provided, with considerations for distorted waveforms.

Additional Features:

Harmonic measurement capabilities, including dual harmonic measurement and IEC standards compliance.
Data storage options and built-in printer functionality are mentioned.

Limitations: The document notes limitations on some specifications and functions, advising users to consult individual product catalogs for detailed information.

Video Signal (VGA) Output Section: Connector type: 15-pin D-Sub (receptacle). Output format: VGA compatible.

Advanced Calculation:

Wide Bandwidth Harmonic Measurement: Utilizes PLL synchronization or external sampling clock methods. Frequency range varies based on method used.
PLL Source: Select voltage or current of each input element or external clock. Input level requirements vary with crest factor.
FFT Specifications: Data length of 9000, 32-bit processing word length, rectangular window function, and anti-aliasing filter options.

Revolution and Torque Signal Inputs:

Analog Input: Insulated BNC connector with various input ranges and resistances. Accuracy and temperature coefficients specified.
Pulse Input: Frequency range of 2 Hz–200 kHz, with specific amplitude and waveform requirements.

Added Frequency Measurement: Allows measurement of up to two frequencies using the reciprocal method. Measurement range and accuracy depend on input signal levels and frequency.

Delta Calculation Function: Optional feature for advanced calculations.

D/A Output: 16-bit resolution with ±5 V FS output voltage. Update rate matches main unit data update rate. Accuracy and temperature coefficients specified.

Frequency Measurement: Detailed accuracy specifications provided for various frequency ranges and line filter settings.

IEC Harmonic Measurement: Uses PLL synchronization method with specific frequency range and input level requirements. FFT data length and processing specifications provided.

Waveform Computation Function: Supports voltage, current, and power computations with various mathematical operations. Sampling clock fixed at 200 kHz.

FFT Function Specifications: Includes voltage, current, and power computations with a maximum frequency analysis of 100 kHz. Various window functions and anti-aliasing filter options available.

Procedures: Measurement values are determined using different averaging methods based on the data updating period. For short periods, the Average for the Synchronous Source Period (ASSP) is used, while for longer periods, the Exponential Average for Measuring Period (EAMP) is applied. The document also describes the calculation of active, reactive, and apparent power using different methods depending on the waveform type.

Norms and Standards: The document specifies compliance with IEEE standards for GP-IB and Ethernet communications, as well as USB and RS-232 interfaces. It also mentions the environmental conditions for operation and storage, including temperature, humidity, and altitude.

Recommendations: For accurate measurements, it is recommended to ensure the frequency of the synchronous source signal is accurately measured and displayed. The document advises on the use of different power calculation methods based on the waveform type and measurement objectives.

Key Data from Tables and Figures: The document includes dimensions for various Yokogawa power meters and specifications for communication interfaces. It also provides details on the power supply requirements and external I/O configurations.

Critical Information: Accuracy adjustments are necessary for high-frequency components and external sensor inputs. The document highlights the importance of selecting the appropriate calculation method for different data updating periods to ensure measurement stability and accuracy.

Catalog excerpts

Precision Power Analyzer Ȝ Basic Power Accuracy Ȝ Good Readability The Large, 8.4-inch LCD and the Range Indicator LEDs Simultaneous Measurement with 2 Units (8 Power Input Elements) Ȝ Store Function Ȝ Interface 50 ms Data Storing Interval Ȝ Advanced Computation Function Waveform Computation, FFT Analysis, Waveform sampling Data Saving Harmonic Measurement Voltage Fluctuation/ Flicker Measurement * As of July, 2013, for power meter accuracy in three-phase power meter (as investigated by Yokogawa). High-end Power Meter with top precision* Basic Power Accuracy: 0.02% of reading Visit our website to sign up for email updates. Precision Power Analyzer WT3000

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Precision Power Analyzer WT3000 Yokogawa’s power measurement technology provides best-in-class*1 precision and stability Basic Power Accuracy: ±0.02% With basic power accuracy of ± 0.02% of reading, DC and 0.1 Hz–1 MHz measurement bandwidths, and up to four input elements, the WT3000 provides higher-accuracy measurement for inverter I/O efficiency. More Precise. More Bandwidth. More Features.*2 • The WT3000 is a truly innovative measurement solution, combining top-level measurement accuracy with special functions. *2 • The large, 8.4-inch liquid crystal display and the range indicator LEDs ensure...

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Better Efficiency in Power Measurements In developing the WT3000, Yokogawa focused on improving efficiency in two basic areas. One goal was to obtain highly precise and simultaneous measurements of the power conversion efficiency of a piece of equipment. The other objective was to improve equipment evaluation efficiency by making simultaneous power evaluations and tests easier and faster. Select the model most suited to your measurement needs. Standard Version ଙHigh Accuracy and Wide Frequency Range New Innovations to Enhance the Reliable Measurement Technology With the WT3000, we made further...

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Precision Power Analyzer WT3000 FUNCTIONS ᭤ WT3000 Controls: Simple to Use, Easy to View The WT3000 was designed with user-friendly functions and controls in response to user requests for a simpler range setting operation and more user-friendly parameter setting display process. Simpler range settings Item pages make it easy to set the data you want to view for each experiment Range settings using direct key input Using item pages to set display preferences The range indicator on the WT3000 is a seven-segment green LED, so the set range can be monitored at all times. The range can easily be switched...

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OPTIONS ᭤ A wide variety of optional functions make it easy to perform sophisticated power evaluations. When you purchase a WT3000 from Yokogawa, you get to select just the options you need. This approach lets you maximize performance at a lower cost. Checking harmonic components and total harmonic distortion (THD) Output graphics at the touch of a button The advanced calculation function (/G6 option) meets these measuring needs with advanced, powerful features for making power analysis measurements more efficient. • Harmonic Measurement in Normal Measurement Mode You can measure harmonic data...

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Precision Power Analyzer WT3000 Variety of Communication Functions (GP-IB Comes Standard) USB Port (PC) Option (/C12) * Select USBport (PC) or RS-232 The USB port (type B connector) on the rear panel of the WT3000 allows data communications with a PC1. 1. USB driver required for USB communications. A USB driver is available from our Web site. Ethernet port (/C7) The optional Ethernet port (100BASE-TX/10BASE-T) allows you to connect the WT3000 to a LAN. Once connected, images and numerical value data saved on the WT3000 can be transferred to a PC using FTP server software or other utilities. Serial...

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Evaluation of Lighting Devices High Accuracy Measurements of Transformers • Simultaneous Measurement of Voltage, Current, and THD (Total Harmonic distortion) Testing of lighting devices often involves measurement of voltage, current, and THD, a parameter that indicates the quality of power. This is because distortion in voltage and current waveforms is becoming more prevalent due to the increasing complexity of control systems. The WT3000 can simultaneously measure voltage and current with THD, eliminating these inconveniences and allowing for more accurate and rapid measurements of an instrument’s...

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Precision Power Analyzer WT3000 SOFTWARE Utility Software WTViewer 760122 WTFileReader (Combined into the WTViewer) WTViewer is an application software tool that reads numeric, waveform, and harmonic data measured with the WT3000 Precision Power Analyzer. Communications:GP-IB, Serial (RS-232, /C2), USB(/C12), or Ethernet (/C7) • Numeric Data WTViewer can numerically or graphically display the results of measured harmonics up to the 100th order for such parameters as voltage, current, power and phase angle. • Viewing Trends Voltage and current waveforms can be monitored on the PC screen. You can...

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REAR PANEL ᭤ Rear Panel Optional features ቢ Voltage input terminals ባ Current external sensor input terminals ቤ Current direct input terminals ብ GP-IB port ቦ BNC connector for two-system synchronized measurement ቧ Serial (RS-232) port (option/C2) or USB port (PC) (option/C12) ቨ Ethernet port(100BASE-TX/10BASE-T) (option/C7) ቩ VGA port (option/V1) ቪ D/A output (option/DA) ቫ Torque and speed input terminals (motor version) CHARACTERISTICS ᭤ Example of basic characteristics showing the WT3000’s high precision and excellent stability Total power error with rated range input for an arbitrary power...

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Precision Power Analyzer WT3000 ACCESSORIES ᭤ Related products Current Sensor Unit Current Transducer Current Output Current Sensor Unit DC to 100 kHz/600 Apk Current Output Current Clamp on Probe AC 1000 Arms (1400 Apeak) • DC~800 kHz/60 Apk, DC~500 kHz/200 Apk, DC~300 kHz/1000 Apk • Wide dynamic range: ±0-1000 A(DC) /1000 A peak (AC) • Wide measurement frequency range: DC and up to 800 kHz • High-precision fundamental accuracy: ±(0.05% of reading + 30 µA) • ±15 V DC power supply, connector, and load resistor required. • Wide dynamic range: -600 A to 0 A to +600 A (DC)/600 A peak (AC) • Wide...

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BU7603_00E_060

BU7603_00E_060

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