WT1800 Precision Power Analyzer

High-performance with up to 6 power inputs, Basic Power Accuracy: 0.1% of reading and Current Measurement from 100 μA to 55A

WT1800 Digital Power Analyzer— Watch the WT1800 Video —

Features

  • Voltage ranges: 1.5 V to 1000 V (12 ranges)
  • Direct input current ranges: from 10 mA to 5 A (9 ranges) or from1 A to 50 A (6 ranges)
  • Basic Power Accuracy: 0.1%
  • Frequency range: DC 0.1 Hz to 5 MHz
  • Sampling Rate: Approx. 2MS/s
  • Current measurement from 100 μ A to 55 A
  • Up to six phase measurements on one unit
  • Up to the 500th order harmonic measurement
  • Low power-factor error to 0.1%
  • Built-in User Manual displays on screen
  • User-defined event trigger function, Line Filter
  • Two channels external analog signal input
IIII [+] Options and Applications

Options

  • Dual Harmonic Measurement
  • Motor Evaluation Functions
  • Delta computation function
  • Electrical angle/rotation direction measurements of motors

Applications

  • Input / Output Efficiency Measurements of Inverters
  • Motor Evaluation
  • Performance Testing of Home Appliances
  • Power Generation and Conversion Efficiency Measurements
  • Power Measurement of Fluorescent and LED Lights
  • Harmonic Measurements of Aircraft Power Systems
  • Power Measurements of Green IT Data Systems

Description

Yokogawa’s WT1800 is a precision power analyzer with a basic accuracy of ±0.1% of reading, DC and 0.1Hz- 1MHz bandwidth, and up to four input elements for single or three phase power analysis and Voltage/Current Bandwidth 5 MHz (-3 dB, Typical).
The WT1800 was designed with user-friendly functions and controls and a wide variety of optional functions. You can customize the WT1800 by selecting the modules you need to meet your application requirements, maximizing performance at a lower cost.

The WT1800 is the ideal measurement solution for testing Product Efficiency, the design of Inverters, Motor Drives, Lighting Systems, Uninterruptible Power Supplies, Aircraft Power Systems, Transformer Testing and other power conversion devices.

 
  • Literature
  • Specifications
  • Functions
  • Optional Functions
  • Software
  • Acc.
Literature and Technical Information
pdf icon

Panel Instrumentation

++ WT1800 Power Analyzer | Brochure (5.8 MB)
++ WT1800 Power Analyzer | Getting Started (9.1 MB)
++ WT1800 Power Analyzer | User’s Manual (7.8 MB)
++ WT1800 Power Analyzer | Communication Interface (3.7 MB)
Software
++ WTViewer Software (4.4 MB)
Model: Yokogawa WT1800 Power Analyzer
Input WT1801 WT1802 WT1803 WT1804 WT1805 WT1806
Number of elements 1 element 2 elements 3 elements 4 elements 5 elements 6 elements
Available with 5A or 50A input element
   
Basic power accuracy: 0.1% of reading +0.05% of range
DC power accuracy 0.05% of reading +0.1% of range
Power frequency range: DC, 0.1 Hz to 1 MHz
V / A frequency range: 5 MHz (typical)
Sampling Speed: approximately 2 MS/s
Accuracy range for V / A: 1% to 110%
Inputs Crest Factor: Maximum 300
  Voltage
(for crest factor 3) 1.5 V, 3 V, 6 V, 10 V, 15 V, 30 V, 60 V, 100 V, 150 V, 300 V, 600 V, 1000 V
(for crest factor 6) 0.75 V, 1.5 V, 3 V, 5 V, 7.5 V, 15 V, 30 V, 50 V, 75 V, 150 V, 300 V, 500 V
Direct Input: Current
50 A input element  
(for crest factor 3) 1A, 2 A, 5 A, 10 A, 20 A, 50A
(for crest factor 6) 500 mA, 1 A, 2.5 A, 5 A, 10 A, 25 A
5 A input element  
(for crest factor 3) 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 500 mA, 1 A, 2 A, 5A
(for crest factor 6) 5 mA,10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 500 mA, 1 A, 2.5 A
External Input: Current Sensor
(for crest factor 3) 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V, 5 V, 10 V
(for crest factor 6) 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V, 2.5 V, 5 V
inputs  
Universal analog inputs: Two analog inputs (/AUX option)
Rotation speed input: A-phase, B-phase, Z-phase input (/MTR option)
A/D output  
DA output channels: 20 ch (/DA option)
A/D converter 16-bit resolution
Data Memory  
Data memory: Direct save to USB device up to 1 GB
Data Update  
Rate: 50 m, 100 m, 200 m, 500 m, 1, 2, 5, 10, 20 [sec]
Measurement Parameters
Main: Voltage, current, active power, reactive power, apparent power, power factor, phase angle, frequency, peak voltage, peak current,crest factor, integration (Wh, Ah, varh, Vah)
  MAX hold
Voltage RMS/MEAN simultaneous measurement
Average active power (user defined function)
Active power integration (WP) (Wh)
Apparent power integration (WS) (VAh)
Reactive power integration (WQ) (varh)
Motor evaluation Torque, A / B / Z phase signal inputs (/MTR), 6 inputs, & motor evaluation (opt.)
Delta Calculation Voltage (V) difference, 3P3W ⇒ 3V3A, DELTA ⇒ STAR, STAR ⇒ DELTA
Current (A) difference, 3P3W ⇒ 3V3A, DELTA ⇒ STAR, STAR ⇒ DELTA
Power (W) DELTA ⇒ STAR
Harmonic Measurement in Normal Measurement Format PLL synchronization method
Frequency range Fundamental frequency of the PLL source is in the
range of 0.5 Hz to 2.6 kHz.
Window Rectangular
FFT data length 1024 data update rate is 50 ms, 100 ms, or 200 ms
8192 data update rate is 500 m, 1 s, 2 s, 5 s, 10 s, or 20 s
Display—-
Display: 8.4-lnch XGA TFT color LCD
Waveform Display
Numerical: Select 4, 8, 16, Matrix, ALL, Harmonic Single List, Harmonic Dual List, Custom
display res: less than 60000: 5 digits 60000 or more: 4 digits
Bar: Displays the size of each harmonic in a bar graph
Dual Vector: phase difference in the fundamental waves of voltage and current.
Trend display: Displays trends in numerical data of the measurement functions in a sequential line graph.
Number of measurement channels: Up to 16 parameters
Waveform: Displays the waveforms of the voltage and current from elements 1 through 6, torque, speed, AUX1, and AUX2
Custom: image data can be loaded onto the screen and the position and size of the numerical data can be specified
Built-in Printer (/B5 Option)
Print type: Thermal line/dot matrix – 8dot/mm, width: 80 mm [Effective print width: 72 mm]
Environment
Power supply: 100 to 120VAC/220 to 240VAC (automatic switching) — 50/60Hz
Power consumption: Max 150 VA (when using printer)
Operating Temperature: 5 to 40°C, 20 to 85% RH
Dimensions: Approximately 426 (W) x 177 (H) x 459 (D) mm (including 253710 printer cover; does not include knobs and projections)
Weight: Approx. 15 kg (main unit with four power modules installed)

Simple and easy to use, Exceptional crisp display

The WT1800 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

  • Range settings using direct key input The range indicator on the WT1800 is a seven-segment green LED, so the set range can be monitored at all times. The range can easily be switched using the up and down arrows.
  • WT1800 item pages used to set display preferences. The WT1800 has nine numeric item pages for displaying measurement values. Once you set the measurement parameters you want displayed on a particular item page, you can easily switch between entire groups of displayed parameters.

A Wide Variety of Display Formats

Ranging from Numerical, Dual harmonic measurement, Simultaneous two vector display, Trend, combination display of Information and customizable screen display

  • Dual Harmonic (optional)
  • Dual Vector (Simultaneous two vector displays)
  • Waveform (Support for 6 split screen displays)
  • Trend (Capture efficiency changes visually)
  • Setting information (Combination display of Information and Numerical screens)
  • Custom (Customize display screen)
    [Image]

Wide range of standard functions

— The WT1800 is equipped with an array of sophisticated functions for precise and simultaneous measurements of the power conversion efficiency of instrument, as well as, equipment evaluation efficiency by making simultaneous power evaluations and tests easier and faster.

New Functions

The advanced new functions provide greater measurement versatility by making power analysis measurements more efficient

  • Two-channel external signal input is available for power and analog signal measurement (option available in combination with the motor evaluation function) Power measurements can be performed together with physical quantity data such as solar irradiance or wind power in wind generation
    [Image]
  • Electrical angle measurement. Motor evaluation function: A-phase, B-phase, and Z-phase inputs (option available in combination with external signal input). Pulse or analog signals can be input for rotation speed and torque signal measurements. The motor evaluation function of the WT1800 makes it possible to detect the rotation direction and measure the electrical angle, which is not possible with previous models
  • User-defined event function (Trigger)***** For the first time in the high-precision power analyzer industry, an event trigger function is available to meet the requirement to capture only a particular event. For example, a trigger can be set for measured values that fall out of the power value range from 99 W to 101 W and only data that meets the trigger condition can be stored, printed, or saved to a USB memory device

Measurements

High precision, wide-range, fast-sampling and simultaneous harmonic measurement

  • Voltage and current frequency bandwidth 5 MHz (-3 dB, typical) Faster switching frequencies increasingly require measurements in a wider range. The WT1800 provides a voltage and current frequency bandwidth (5MHz) capable of accurately capturing fast switching signals
  • 0.1 Hz low-speed signal power measurement and max. 50 ms high-speed data collection. The frequency lower limit has been reduced to 0.1 Hz for power measurements at a low speed. Normal Data measurement , up to the 500th harmonic order, can be measured and saved simultaneously. The data update rate can be selected from nine options from 50 ms to 20 s
  • Update data rate in a 9 step selection from 50 ms to a rate 20 s for low-speed measurements. Setting the update rate to suit the data acquisition interval ensures proper capture of saved phenomena data.
  • The setting ranges of voltage and current are usually displayed with voltage and current signal levels that are input to the power analyzer
    [Image]
  • Voltage and Current range selectable***** A new range configuration function is available. It allows you to select a particular voltage and current input range (effective measurement range). Eliminating unnecessary ranges has made it possible to quickly achieve optimal range setting
    • Line filter — Capture an original signal masked by high frequency component***** In power evaluation such as an inverter waveform and distorted waveform, measurement values are affected by high frequency component. A new digital filter function makes it possible to remove unnecessary high frequency components superimposed on signals. A filter can be independently set for each input element. An analog filter for 1 MHz/300 kHz, and digital filter that can be set from 100 Hz to 100 kHz in increments of 100 Hz

A Variety of integration functions

Power integration function makes it possible to measure the amount of power sold/bought in grid interconnection and of battery charge/discharge. The WT1800 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. A user-defined function makes it possible to calculate the Average active power within the integration period. This makes it possible to more accurately measure the power consumption of an intermittent oscillation control unit in which power fluctuates greatly.

  • Active power, current, apparent power, reactive power In addition to the active power integration function (WP) and current integration function (q) included in earlier models, the WT1800 also has a new apparent power integration function (WS) and reactive power integration function (WQ).
  • A wide effective input range for high-precision integration The WT1800 has a wide effective input range, from 1% to 110% of the measurement range.
  • Average active power (using user-defined settings) Average active power can be calculated over an integration interval. This feature is useful for evaluating the power consumed by intermittent-control instruments in which the power value fluctuates

New Optional Functions

The advanced new functions provide greater measurement versatility by making power analysis measurements more efficient

  • Dual harmonic measurement (option)***** A harmonic measurement option (/G5) makes it possible to display both numerical data and bar graphs to help understand measurement data visually. In addition, a dual harmonic measurement function (/G6) makes it possible to measure and display two-line harmonic bar graphs (dual harmonic) simultaneously
  • User-defined event function (Trigger)***** For the first time in the high-precision power analyzer industry, an event trigger function is available to meet the requirement to capture only a particular event. For example, a trigger can be set for measured values that fall out of the power value range from 99 W to 101 W and only data that meets the trigger condition can be stored, printed, or saved to a USB memory device

Motor Version (-MTR option)

— Motor evaluation: Rotating speed, Torque, and Motor output
The WT1800′s ability to perform up to 6 power input measurements makes it possible to evaluate the battery’s charge and discharge characteristics, and test and evaluate the efficiency between the input and output of inverters. A motor evaluation function (/MTR option) makes it possible to simultaneously monitor changes in the voltage, current, and power, as well as changes in the rotation speed and torque.

  • Calculation of motor and total efficiency In addition to the functions of the standard version, the new models offer powerful motor/inverter evaluation functions
  • Voltage, current, and power measurement with torque and speed input Measures torque meter and speed sensor output (analog or pulse output), and allows calculation of torque, revolution speed, mechanical power, speed, motor efficiency, and total efficiency in a single unit
  • A-phase, B-phase, and Z-phase input terminals The A-phase and B-phase make it possible to detect the rotation direction of motors. In addition, electrical angle can be measured using Z-phase signals
  • Inverter, motor, and DC/DC converter efficiency measurements A WT1800 is capable of measuring the effective power, frequency, and motor output in order to measure the total efficiency, including inverter and motor efficiency and battery DC/DC conversion efficiency. DC power accuracy has been improved to ±0.05% to ensure more accurate measurements
    [Image]

DA output and remote control (/DA)

— Sometimes you may want to check changes in data, along with other measurement data (temperature, etc) at the same time when you acquire communication data, such as voltage, current, power, and efficiency data. integration can be linked by inputting an analog trigger signal from another device.

  • 20 channel output A DA output function allows you to retrieve analog signals on up to 20 channels
  • Integration by remote control remote control signals make it possible to control the start, stop, and reset of integration by external analog signals

Delta Calculation (/DT)

— It is possible to obtain the differential voltage, line voltage, phase voltage, etc. by obtaining the sums and differences of instantaneous measurement values of voltage and current in each element.

  • Checking phase voltage when you measure line voltage
    • Differential voltage/current: Differential voltage and current between two elements are computed in the 3Ø – 3-wire system.
    • Line voltage/phase current: Line voltage and phase current that are not measured are computed in the three-phase 3Ø – 3-wire system
    • Star-delta conversion: Line voltage is computed from the phase voltage using the 3Ø – 4-wire system data. l
    • Delta-star conversion: Phase voltage is computed from the line voltage in the 3Ø – 3-wire system (3V3A system)
      [Image]

Added Frequency Measurement (/FQ)

  • Checking the frequencies of all inputs In addition to the standard 3 channels of frequency measurement, a 12-channel frequency measurement option is also available. This option provides frequency measurement of voltage and current on all channels (with input elements 1 through 4 installed). This is necessary when you want to measure voltage and current frequency from the instrument’s I/O as well as voltage and current frequencies of multiple items under test at the same time
  • D/A Output (/DA)
    • 20 Channels (Output parameter can be set for each channel) Measured values and calculated value by user-defined function can be output as ± 5V FS DC voltages from the D/A output connector on the rear panel. ± (Accuracy of each measurement function +0.1% of FS) FS=5 V

Auxiliary Sensor Inputs (/AUX)

The WT1800 allows you to measure voltage, current, and power, as well as compute the light emitting efficiency (lamp efficiency) by connecting the output of an illuminance meter, etc. to the external signal input terminal (/AUX option)

  • Light emitting efficiency and power measurements of LED lights (/AUX option) It is important for LED lights to increase the light emitting efficiency while at the same time reducing the current and power consumption.
  • Pyranometer (photovoltaic power generation) (/AUX option)
  • Vane anemometer (wind power generation) (/AUX option)

760122 WTViewer Software

Multi-channel synchronized measurements using WTViewer
WTViewer is application software that allows you to read numerical data measured with a WT1800 Precision Power Analyzer to a PC via Ethernet, GP-IB, or USB communication, and display and save the numerical values. Up to 12 power inputs can be measured simultaneously in synchronized measurements between two units. Also, the ability to collect data of up to four WT1800 units allows you to measure the conversion efficiency, power, and power loss of up to 24 power inputs.

  • Up to 20 inverter/converter efficiency computations can be set. WTViewer is application software that allows you to read numerical data measured with a WT1800 Precision Power Analyzer to a PC via Ethernet, GP-IB, or USB communication, and display and save the numerical values.
  • 12-power measurements up to 12 power inputs can be measured simultaneously in synchronized measurements between two units. Also, the ability to collect data of up to four WT1800 units allows you to measure the conversion efficiency, power, and power loss of up to 24 power inputs

Software


Computation Example:

Inverter discharge efficiency ID1P Σ A/ID1P1×100[%], Converter charge efficiency ID2P1/D2P Σ A×100[%] Inverter charge efficiency ID1P1/ID1P Σ A×100[%], Motor efficiency ID1Pm/ID1P Σ A×100[%]

STANDARD ACCESSORIES
OPTIONAL ACCESSORIES (Brochure Download)
Cables
366924 — BNC cable BNC–BNC, 1 m — Qty 1 BNC cable BNC–BNC, 1 meter
366925 —BNC cable BNC–BNC, 2 m — Qty 1 BNC cable BNC–BNC, 2 meters
Adapter Sets
758917 —Measurement lead — Qty 1 75 cm, two leads (red and black) in a set
758921 —(Fork terminal adapter set) — Qty 1 4 mm fork terminal, banana terminal conversion, red and black (one each)
758922 — Alligator clip adapter (rated for 300 V) — Qty 1 Banana–alligator conversion, two in a set
758923 — Safety terminal adapter — Qty 1 (spring-hold type) Two adapters to a set.
758924— Conversion adapter — Qty 1 BNC-banana-jack(female) adapter
758931 — Safety terminal adapter — Qty 1 (screw-fastened type) Two adapters to a set. 1.5 mm hex Wrench is attached
701959 — Safety mini-clip — Qty 1 Hook type. Two in a set
Current Sensors / Current transducer
CT1000— AC/DC Current sensor (ratio: 1500: 1 , DC to 300 kHz)— Qty 1 ±(0.05% of rdg + 30 μA) : 1000 Apk
CT200 —AC/DC Current sensor (ratio: 1000: 1, DC to 500 kHz) — Qty 1 ±(0.05% of rdg + 30 μA), 200 Apk
CT60— Current sensor (ratio: 600: 1, DC to 800 kHz) — Qty 1 ±(0.05% of rdg + 30 μA), 60 Apk
751574 —Current transducer ( ±(0.05% of rdg + 40 μA), DC to 100 kHz) — Qty 1 ±(0.05% of rdg + 40 μA), 600 Apk
Software
arrow 760122 —WTViewer— For WT1800 Software
arrow 7601922 —Harmonic/Voltage fluctuation/Flicker Measurement Software— For WT1800 Standard-compliant measurement (IEC 6000-3-2)(IEC 6000-3-12)(IEC 6000-3-3)
Miscellaneous
B9316FX — Printer roll pager — Qty 1 Thermal paper, 10 meters (1 roll)
B9284LK —External sensor cable — Qty 1 Current sensor input connector. Length 0.5m
arrow 701960 — Compact Instrument Cart — Qty 1 Compact Cart
arrow 701961 — Deluxe Instrument Cart — Qty 1 Deluxe Cart
arrow 701962 — General-purpose Instrument Cart — Qty 1 General-purpose Cart
arrow 751535-EA — Rack Mount Kit — Qty 1 For EIA