761922 HARMONIC ANALYSIS SOFTWARE FOR WT3000/WT3000E
The measurement procedures and settings for harmonic/flicker standards testing have been precisely defined. Engineers must also stay current with the specialized knowledge and up-to-date information required to periodically review the contents of the standards and perform the standards conformance tests. The model 761922 Harmonic/Flicker Measurement Software enables engineers without specialized knowledge to perform a range of operations using the WT3000/WT3000E Precision Power Analyzer including judging standards compliance and outputting test reports.
FeaturesThe measurement procedures and settings for harmonic/flicker standards testing have been precisely defined. Engineers must also stay current with the specialized knowledge and up-to-date information required to periodically review the contents of the standards and perform the standards conformance tests. The model 761922 Harmonic/Flicker Measurement Software enables engineers without specialized knowledge to perform a range of operations using the WT3000/WT3000E Precision Power Analyzer including judging standards compliance and outputting test reports.
Need /G6 option with WT3000/WT3000E for harmonic standard testing.
Need /FL option with WT3000/WT3000E for flicker standard testing.
Need /FQ and /FL options with WT3000/WT3000E for 3-phase flicker standard testing.
pic - Harmonic/Flicker Measurement Software
- IEC61000-3-3 Ed3.0 (support Flicker measurement standard)
- IEC61000-4-15 Ed2.0 (Support Flicker meter standard)
- WT3000/WT3000E*: IEC61000-4-7 1991(window widths of 16 cycles), IEC61000-4-7 Ed2.0Am1(Harmonic and interharmonic measurement supporting window widths of 50 Hz/60 Hz, 10/12 cycles).
- Use of WT3000/WT3000E enables measurements conforming to standard.
- Saves waveform/harmonic data in CSV format.
- System Construction for IEC testing.
Software Enabling Measurement Complying with Harmonics Standard
|Harmonic Current Measurement Value List
Displays harmonic measurement data as a single list.
You can capture various types of data measured into your PC at 200ms fixed intervals. Thus, you can view trends graphically. This feature lets you monitor power supply voltage fluctuations, changes in current consumption and other time-based variations.
|Harmonic Current Bar Graph
Evaluates whether harmonic data is within the standard limit value, and displays the result as a bar graph. The display of evaluation results is color-coded, in colors such as red and blue.2
|Measurement Value Judgement Graph
Measures the harmonic current over the set observation time, and evaluates it in conformance with the standard. Evaluation results are displayed as PASS or FAIL.2
Lets you display voltage or current signal waveforms, and measure frequencies and peak values. Moving the cursor lets you display values for the displayed waveform.
|2:Evaluations conforming to the IEC61000-3-2 Ed. 3.0 Am2|
Automatic Report Generation
You can print harmonic measurement results as value lists and graphs, and save image data. Titles and comments can be entered in reports, letting you enter information such as measurement dates/times, device names or control numbers.
Entering Settings on the WT3000/WT3000E from Your PC
|You can enter settings on the WT3000/WT3000E from your PC. The wiring method, filters, and scaling settings can be modified.|
Converting Data to CSV Format
|Waveform data and harmonic current values can be saved on the PC. Measured data can be saved to .csv files for easy access by spreadsheet programs such as EXCEL.|
Voltage Fluctuation and Flicker Measurement
Voltage fluctuation and flicker measurement complying with IEC 61000-3-3 is executed. Calculates all the voltage fluctuation and flicker values of dc, dmax, d(t), Pst, and Plt, compares them to the preset limits, and indicates the total judgment.
Measured Value and Judgment for Each Observation Period
Normal Voltage Fluctuation and Flicker Measurement
|Displaying the Trend Graph
You can show Trend Graph View. You can select from the following measurement functions.
|dc:||Relative steady-state voltage change|
|dmax:||Maximum relative voltage change|
|Tmax, d(t):||Period during which relative voltage change exceeds the threshold level|
|idc:||Instantaneous relative steady-state voltage change|
|idmax:||Instantaneous maximum relative voltage change|
|id(t):||Period during which instantaneous relative voltage change exceeds the threshold level|
|PF:||Instantaneous flicker sensation (IFS)|
|Displaying the CPF Graph
You can select the element and color to be displayed on the CPF graph.
Up to four elements can be displayed simultaneously.
You can set a separate color for each element.
You can create reports using the data measured with the software.
Main Software Functions
Three Measurement Modes (during online operation)1. Harmonic Measurement Mode
Can evaluate measurement data while harmonics are being measured by a WT3000/WT3000E.
NOTE: Saved measurement data can also be read and displayed during offline operation.2. Harmonics Observation Mode
Lets you observe harmonic variations as bar graphs or lists of numerical values, while harmonics are being measured by a WT Series digital power meter. Use this mode to observe changes in harmonic data.
3. Waveform Observation Mode Lets you observe measured waveforms. Use this mode to observe waveform states.
Evaluations by ClassCan evaluate * data by class (A, B, C or D). Can evaluate whether the current value is within the maximum permitted harmonic current limit value (or within the power ratio limit value).
Harmonic Current Continuous MeasurementLets you measure the harmonic current over a set amount of time. Can evaluate whether the result is within the limit value.*
Repeatability of Measurement DataMaximum values and average values in harmonic measurement data can be compared and measurement data differences can be displayed as bar graphs and numerical values for each harmonic order saved. This mode lets you evaluate* whether values are within the 5% range specified by the standard (repeatability).
*Evaluations conforming to the IEC61000-3-2 Ed. 3.0 Am2 are only supported by WT3000/WT3000E.
Support for Tests Complying with IEC61000-3-2 Ed3.0 Am2
Harmonic measurement system configuration*3: Many AC Power Sources are available to provide the low-distortion AC Voltage and frequency to power the device under test. In addition, for fullcompliance testing, the power source must be capable of supplying the full 16 A load current specified by the IEC standard. Contact your local Yokogawa representative for recommendations.*4: The model that full supports the standard is the WT3000/WT3000E.
Compliance with Standard of WT3000/WT3000E Digital Power AnalyzerIn the EN61000-3-2:2006 Am2: 2009 (IEC61000-3-2 Ed 3.0 Am2) , requirements for measuring devices are set forth by IEC61000-4-7 Ed 2.0 Am1. The table below shows the items the WT3000/WT3000E digital power analyzer complies with among the EN61000-3-2: 2006 Am2: 2009 (IEC61000-3-2 Ed 3.0 Am2) related items in IEC61000-4-7 Ed 2.0 Am1.
|Item||IEC61000-4-7 Ed 2.0 Am1||Pricision Power Analyzer
|5% of maximum
allowance value or
0.15% of rated current,
whichever is larger.
|Accuracy for 40th-order
frequency of 2.4 kHz
with 60 Hz fundamental
frequency (direct inpuit):
crest factor 3 (2.5% of reading+0.05% of range)
within 5% error (when
2% or larger of input />range)crest factor 6 (2.5% of reading+0.1% of range)
within 5% error (when 4% or larger of input
loss in current input circuit
|Voltage drop: 0.15V
loss: 5.5Ω approx.
+ 0.03 µH approx.
27 Arms approx.
|Crest factor in current
|5Arms or less: 4 10Arms or less: 3.5
10Arms or over: 2.5
Overload display required
|3 or 6
Has overload display
| Range Composition of
current input circuit;
|Direct input ranges: 0.1,
0.2, 0.5, 1, 2, 5, 10, 20,
50, 100A are appropriate ranges.
| 0.5, 1, 2, 5, 10, 20, 30
A ranges (for crest factor 3)
0.25, 0.5, 1, 2, 5, 10, 15A
range (for crest factor 6)
|Complies within ranges on left.
Precise measurements require attention to the range selection and the crest
|Range for external shunt: 0.1 to 1 V is appropriate.|| 0.5, 1, 2, 5, 10, 20, 30
A ranges (for crest factor
3) 0.25, 0.5, 1, 2, 5, 10,
15A range (for crest
|Maximum input is 1.2 times the range (cintinuous), or 10 times the range (1 second).|| Direct input:
peak current of 90 A
or RMS of 33 A, whichever
is lower (continuous).
peak current of 150 A or
RMS of 50 A, whichever
is lower (1 second).
External sensor input:
Peak value not to
exceed 5 times the
Peak value not to
exceed 10 times the range (1 second)
||-50 dB min.
||-50 dB min. for fundamental frequency of 50 / 60 Hz up to 40th-order harmonic
|Window function shape
|Window function width
||10 cycle (50Hz)/12 cycle (60Hz)
||10 cycle (50Hz)/12 cycle (60Hz)
|Relative deviation of
sampling frequency and
||Time constant: 1.5 seconds
||Time constant: 1.5 seconds
|Filter time constant of Smoothing (Window width: 200ms )||Yes|
||Effects of temperature,
humidity, power voltage,
common mode voltage,
static electricity, and
radiation field are
|Complies for general specifications.
UpdatesAugust 3, 2015
- Updated software version to 6.42
|Bulletin 7619-22E||Harmonic/Flicker Measurement Software||