Yokogawa Harmonic Analysis Software for WT3000/WT3000E (761922)
Yokogawa Harmonic Analysis Software for WT3000/WT3000E (761922)
Product Overview:
What's New
August 3, 2015

Updated software version to 6.42
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 Class
Can 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 Measurement
Lets you measure the harmonic current over a set amount of time. Can evaluate whether the result is within the limit value.*
Repeatability of Measurement Data
Maximum 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 IEC6100032 Ed. 3.0 Am2 are only supported by WT3000/WT3000E.
Support for Tests Complying with IEC6100032 Ed3.0 Am2
Harmonic measurement system configuration
*3: Many AC Power Sources are available to provide the lowdistortion 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 Analyzer
In the EN6100032:2006 Am2: 2009 (IEC6100032 Ed 3.0 Am2) , requirements for measuring devices are set forth by IEC6100047 Ed 2.0 Am1. The table below shows the items the WT3000/WT3000E digital power analyzer complies with among the EN6100032: 2006 Am2: 2009 (IEC6100032 Ed 3.0 Am2) related items in IEC6100047 Ed 2.0 Am1.
Item  IEC6100047 Ed 2.0 Am1 
Pricision Power Analyzer WT3000/WT3000E 
Compliance with Standard 
Current measurement error 
5% of maximum allowance value or 0.15% of rated current, whichever is larger. 
Accuracy for 40thorder 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 range) 
Yes 
Measuring instrument loss in current input circuit 
Voltage drop: 0.15V max. 
Measuring instrument loss: 5.5Ω approx. + 0.03 µH approx. 
Complies through 27 Arms approx. 
Crest factor in current input circuit 
5Arms or less: 4 10Arms or less: 3.5 10Arms or over: 2.5 Overload display required 
3 or 6 Has overload display 
Yes 
Range Composition of current input circuit; excenssive input resistance 
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 factor 6) 

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 range (continous) Peak value not to exceed 10 times the range (1 second) 

Antialiasing  50 dB min.  50 dB min. for fundamental frequency of 50 / 60 Hz up to 40thorder harmonic  Yes 
Window function shape  Rectangular  Rectangular  Yes 
Window function width  10 cycle (50Hz)/12 cycle (60Hz)  10 cycle (50Hz)/12 cycle (60Hz)  Yes 
Relative deviation of sampling frequency and fundamental frequency 
Within ±0.03%  Within ±0.03%  Yes 
Smoothing  Time constant: 1.5 seconds  Time constant: 1.5 seconds  Yes 
Filter time constant of Smoothing (Window width: 200ms )  Yes  
General specifications 
Effects of temperature, humidity, power voltage, common mode voltage, static electricity, and radiation field are specified. 
See general specifications items. 
Complies for general specifications. 