13.2 Input Specifications/Output Specifications/Measurement Specifications
208
(26) Harmonic voltage and harmonic current (including fundamental component) (Uharm/Iharm)
Measurement method Compliant with IEC61000-4-7:2009
Indicated harmonic voltage and harmonic current values incorporate inter-harmonics components
adjacent to the next
whole-number harmonic component after harmonic analysis. (For details see
"13.8 Calculation Formula" (p.231).)
Measurement accuracy is specified for input that is 10% to 200% of IEC61000-2-4 Class 3.
Analysis window width 10 cycles (50 Hz), 12 cycles (60 Hz), or 80 cycles (400 Hz)
Number of window points Rectangular, 4096 points
Displayed item From the 0th to 50 th order (with a fundamental wave of 40 Hz to 70 Hz)
From the 0th to 10 th order (with a fundamental wave of 360 Hz to 440 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 Harmonic voltage: 600.00 V
Harmonic current: Varies with the current sensor used (see input specifications).
Measurement accuracy See measurement accuracy with a fundamental wave of 50 Hz/60 Hz and measurement accuracy
with a fundamental wave of 400 Hz.
Event threshold Level
Harmonic voltage: 0.00 to 780.00 V (order 0: specified as absolute value)
Harmonic current : From 0 to (1.3 × current range)
(see input specifications) (order 0: specified
as absolute value).
Content percentage
0.00% to 100.00%
Event IN Start of approx. 200 ms aggregation in which readings were greater than the threshold for each order
Event OUT Start of approx. 200 ms aggregation in which readings were less than (threshold - hysteresis) for each order
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
Constraints When using an AC-only current sensor, the 0th order is not specified for current and power.
(27) Harmonic power (including fundamental component) (Pharm)
Measurement method Compliant with IEC61000-4-7:2009
Indicates harmonic power values consisting
of harmonic power for each channel and the sum of
multiple channels. (For details see "13.8 Calculation Formula" (p.231)
.)
Analysis window width 10 cycles (50 Hz), 12 cycles (60 Hz), or 80 cycles (400 Hz)
Number of window points Rectangular, 4096 points
Displayed item From the 0th to 50 th order (with a fundamental wave of 40 Hz to 70 Hz)
From the 0th to 10 th order (with a fundamental wave of 360 Hz to 440 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 See power ranges.
Measurement accuracy See measurement accuracy with a fundamental wave of 50 Hz/60 Hz and measurement accuracy
with a fundamental wave of 400 Hz.
Event threshold Harmonic power: From 0 to (1.3 × current range) (specified as absolute value)
Event IN Start of approx. 200 ms aggregation in which the reading is greater than the threshold (when the
threshold is positive) or less than the threshold (when the threshold is negative)
Event OUT Start of the approx. 200 ms aggregation in which the reading is less than (threshold - hysteresis)
(when the threshold is positive) or greater than (threshold + hysteresis) (when the threshold is neg-
ative) in the EVENT IN state
Multiple-phase system treatment Separate by channel
Saved waveforms Event waveforms
Constraints When using an AC-only current sensor, the 0th order is not specified for current and power.
To Next Page
Loading...
