YOKOGAWA WT3002E - Page 154

8-7
IM WT3001E-51EN
Wide Bandwidth Harmonic Measurement (Option)
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Index
8.5 Wide Bandwidth Harmonic Measurement Specifications
Item Specifications
Accuracy • When the line filter (5.5 kHz) is ON
Frequency Voltage and Current
±(reading error + measurement
range error)
Power
±(reading error + measurement
range error)
0.1Hz≤f<10Hz
10Hz≤f<30Hz
30Hz≤f≤66Hz
66Hz<f≤440Hz
440Hz<f≤1kHz
1kHz<f≤2.5kHz
2.5kHz<f≤3.5kHz
0.25% of reading + 0.3% of range
0.25% of reading + 0.3% of range
0.3% of reading + 0.05% of range
0.6% of reading + 0.05% of range
1% of reading + 0.05% of range
2.5% of reading + 0.05% of range
8% of reading + 0.05% of range
0.5% of reading + 0.4% of range
0.5% of reading + 0.4% of range
0.45% of reading + 0.1% of range
1.2% of reading + 0.1% of range
2% of reading + 0.1% of range
5% of reading + 0.15% of range
16% of reading + 0.15% of range
If the fundamental frequency is between 1 kHz and 2.6 kHz
Add 0.5% of reading to the voltage and current accuracy for frequencies greater than 1 kHz.
Add 1% of reading to the power accuracy for frequencies greater than 1 kHz.
• When the line filter (50 kHz) is ON
Frequency Voltage and Current
±(reading error + measurement
range error)
Power
±(reading error + measurement
range error)
0.1Hz≤f<10Hz
10Hz≤f<30Hz
30Hz≤f≤440Hz
440Hz<f≤1kHz
1kHz<f≤5kHz
5 kHz<f≤10kHz
0.25% of reading + 0.3% of range
0.25% of reading + 0.3% of range
0.3% of reading + 0.05% of range
0.7% of reading + 0.05% of range
0.7% of reading + 0.05% of range
3.0% of reading + 0.05% of range
0.45% of reading + 0.4% of range
0.45% of reading + 0.4% of range
0.45% of reading + 0.1% of range
1.4% of reading + 0.1% of range
1.4% of reading + 0.15% of range
6% of reading + 0.15% of range
If the fundamental frequency is between 1 kHz and 2.6 kHz
Add 0.5% of reading to the voltage and current accuracy for frequencies greater than 1 kHz.
Add 1% of reading to the power accuracy for frequencies greater than 1 kHz.
• When the line filter is OFF
Frequency Voltage and Current
±(reading error + measurement
range error)
Power
±(reading error + measurement
range error)
0.1Hz≤f<10 Hz
10Hz≤f<30Hz
30Hz≤f≤1kHz
1kHz<f≤10kHz
10kHz<f≤55 kHz
0.15% of reading + 0.3% of range
0.15% of reading + 0.3% of range
0.1% of reading + 0.05% of range
0.3% of reading + 0.05% of range
1% of reading + 0.2% of range
0.25% of reading + 0.4% of range
0.25% of reading + 0.4% of range
0.2% of reading + 0.1% of range
0.6% of reading + 0.15% of range
2% of reading + 0.4% of range
• If the fundamental frequency is between 400 Hz and 1 kHz
Add 1.5% of reading to the voltage and current accuracy for frequencies greater than 10 kHz.
Add 3% of reading to the power accuracy for frequencies greater than 10 kHz.
• If the fundamental frequency is between 1 kHz and 2.6 kHz
Add 0.5% of reading to the voltage and current accuracy for frequencies greater than 1 kHz
and less than or equal to 10 kHz.
Add 7% of reading to the voltage and current accuracy for frequencies greater than 10 kHz.
Add 1% of reading to the power accuracy for frequencies greater than 1 kHz and less than
equal to 10 kHz.
Add 14% of reading to the power accuracy for frequencies greater than 10 kHz.
However, all the items below apply to all tables.
• When the crest factor is set to 3
• Whenλ(powerfactor)=1
• Power figures that exceed 440 Hz are reference values.
• For external current sensor range, add 0.2 mV to the current accuracy and add (0.2 mV/
externalcurrentsensorrangerating)×100%ofrangetothepoweraccuracy.
• For direct current input range on the 30-A input element, add 0.2 mA to the current accuracy
andadd(0.2mA/directcurrentinputrangerating)×100%ofrangetothepoweraccuracy.
• For direct current input range on the 2-A input element, add 2 µA to the current accuracy and
add(2µA/directcurrentinputrangerating)×100%ofrangetothepoweraccuracy.
• For n
th
order component input, add ({n/(m+1)}/50)% of (the n
th
order reading) to the n+m
th
order and n-m
th
order of the voltage and current, and add ({n/(m+1)}/25)% of (the n
th
order
reading) to the n+m
th
order and n-m
th
order of the power.
• Add (n/500)% of reading to the n
th
component of the voltage and current, and add (n/250)% of
reading to the n
th
component of the power.
• Accuracy when the crest factor is 6: The same as when the range is doubled for crest factor 3.
• The accuracy guaranteed range by frequency and voltage/current is the same as the
guaranteed range of normal measurement.