13.2 Input Specifications/Output Specifications/Measurement Specifications
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Chapter 13 Specifications
Measurement accuracy with a fundamental wave of 50 Hz/60 Hz
Harmonic input Measurement accuracy Notes
Voltage 1% or greater of nominal voltage The 0th order: ±0.3% rdg.±0.08% f.s.
1
st
or higher : ±5.00% rdg.
Defined for a nominal voltage of
100 V or greater.
<1% of nominal voltage The 0th order: ±0.3% rdg.±0.08% f.s.
1
st
or higher : ±0.05% of nominal voltage
Defined for a nominal voltage of
100 V or greater.
Current The 0th order : ±0.5% rdg.±0.5% f.s.
1
st
to 20
th
: ±0.5% rdg.±0.2% f.s.
21
st
to 50
th
: ±1.0% rdg.±0.3% f.s.
Add current sensor accuracy.
Power The 0th order : ±0.5% rdg.±0.5% f.s.
1
st
to 20
th
: ±0.5% rdg.±0.2% f.s.
21
st
to 30
th
: ±1.0% rdg.±0.3% f.s.
31
st
to 40
th
: ±2.0% rdg.±0.3% f.s.
41
st
to 50
th
: ±3.0% rdg.±0.3% f.s.
Add current sensor accuracy.
Measurement accuracy with a fundamental wave of 400 Hz
Harmonic input Measurement accuracy Notes
Voltage The 0th order : ±0.5% rdg.±0.08% f.s.
1
st
to 2
nd
: ±0.5% rdg.±0.20% f.s.
3
rd
to 6
th
: ±1.0% rdg.±0.30% f.s.
7
th
to 10
th
: ±5.0% rdg.±0.30% f.s.
Current The 0th order: ±0.5% rdg.±0.5% f.s.
1
st
to 2
nd
: ±0.5% rdg.±0.2% f.s.
3
rd
to 6
th
: ±1.0% rdg.±0.3% f.s.
7
th
to 10
th
: ±5.0% rdg.±0.3% f.s.
Add current sensor accuracy.
Power The 0th order: ±0.5% rdg.±0.5%f.s.
1
st
to 2
nd
: ±0.5% rdg.±0.2% f.s.
3
rd
to 6
th
: ±1.0% rdg.±0.3% f.s.
7
th
to 10
th
: ±7.0% rdg.±0.3% f.s.
Add current sensor accuracy.
(28) Inter-harmonic voltage and inter-harmonic current (Uiharm, Iiharm)
Measurement method Compliant with IEC61000-4-7:2009
After harmonic analysis, harmonic voltage and harmonic cur
rent are displayed by adding as inter-
harmonic contents with the harmonic contents according to harmonic order
Measurement accuracy is defined for input that is 10% to 200% of IEC61000-2-4 Class 3.
Analysis window width 10 cycles (50 Hz) or 12 cycles (60 Hz)
Number of window points Rectangular, 4096 points
Displayed item From the 0.5th to 49.5th order (with a fundamental wave of 40 Hz to 70 Hz)
Select either RMS or content percentage (When using content percentage, Zero-display range
causes all orders to be given as 0% when the RMS value is 0.)
Measurement range Inter-harmonic voltage: U1 to U4, 600.00 V
Inter-harmonic current: I1 to I4, Varies with used current sensor (see input specifications).
Measurement accuracy Inter-harmonic voltage (Defined for a nominal voltage of at least 100 V.)
1% or greater of harmonic input nominal voltage:: ±5.00% rdg.
<1% of harmonic input nominal voltage: ±0.05% of nominal voltage
Inter-harmonic current: Unspecified
Event threshold N/A
Constraints Not displayed for 400 Hz measurement.
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