Kikusui KHA3000, Operation Manual, Page: 358 / 392

358
KHA3000
Specifications
Harmonic Current Measurement Function
Item Specifications
Conforming standard IEC 61000-3-2 Ed5.0, IEC 61000-3-2 Ed3.0, IEC 61000-3-2Ed2.2,
JIS C61000-3-2(2011), JIS C61000-3-2(2005)
IEC 61000-3-12 Ed2.0, IEC 61000-3-12 Ed1.0
Requirements for measuring
instrument
*1
*1. Applicable when the current range is 1 A to 40 A and fundamental current input is within the effective input
range. The current that satisfies IEC 61000-4-7 Ed2.0 or IEC 61000-4-7 Ed2.1 is 37.5 Arms or less (single-
phase) or 40 Arms/phase or less (three-phase).
IEC 61000-4-7 Ed2.1(2009), IEC 61000-4-7 Ed2.0(2002),
IEC 61000-4-7 Ed1.0(1991)
Harmonic
analysis order HA mode 40th order
OTHER mode
180th order
*2
*2. When the FFT analyzer function is used.
Accuracy
*3
*3. The minimum harmonic current value is 3 % or higher of the current range and fundamental current input
is within the effective input range. Specified for the ambient temperature of 18
°C
to 28
°C
and relative
humidity of 20 % to 80 % (without condensation). When scaling is used, the voltage range shown on the
display is the "range" value.
45 Hz to
65 Hz 0.5 A
range
± (0.5 % of rdng+0.2 % of range)
1 A to 40 A
range
± (0.5 % of rdng+0.1 % of range)
66 Hz to
2.4 kHz 0.5 A
range ± ((0.5+0.417 × n kHz)% of rdng+0.2 % of range)
: n is frequency.
1 A to 40 A
range ± ((0.5+0.417 × n kHz)% of rdng+0.1 % of range)
: n is frequency.
2.4 kHz to 9 kHz Accuracy not specified.
Resolution 0.5 A to 40 A range Same as current measurement function
Interharmonics processing Processing ON (2nd order and more): IEC 61000-4-7 Ed2.1(2009)
Processing ON: IEC 61000-4-7 Ed2.0(2002)
Processing OFF: IEC 61000-4-7 Ed1.0(1991)
Window function Rectangular
Window width 10-wave (50 Hz)
IEC 61000-4-7 Ed2.1(2009), IEC 61000-4-7 Ed2.0(2002)
12-wave (60 Hz)
16-wave
(50 Hz/60 Hz)
IEC 61000-4-7 Ed1.0(1991)
Number of sampling points Fixed to 16384
Sampling rate
*4
*4. Varies in synchronization with the AC power frequency.
Up to 106.5 ksps
FFT processing word length 32 bit
Anti-aliasing
filter HA mode Cutoff frequency = 6 kHz 4th Butterworth type
OTHER mode Cutoff frequency = 15 kHz 4th Butterworth type
Stop Band
Attenuation The attenuation defined at the fundamental frequency of 50 Hz/60
Hz, against for the aliasing in the range from the fundamental to the
40th harmonic is more than -50 dB.
1.5 second filter Time constant 1.5 second digital low pass filter processing for the
effective values of voltage and current, real power and harmonic
current