Kikusui KHA1000, Руководство по эксплуатации, Страница: 109 / 274

KHA1000
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If you set Limit Values to “3rd/5th/Current Wave,” the tests using third and fifth
harmonic currents and current waveforms that are shown in section 7.4.3, “Rated
power

5 W and

25 W” of IEC 61000-3-2 Ed5.0 are performed.
When you select “3rd/5th/Current Wave,” the phase angles of the points of the
current waveform are displayed on the V/I waveform screen. This is only valid
when the view area is set to 1-Screen.
The phase angles of the points of the current waveform are measured automatically.
From the cycle that includes the maximum absolute peak value within the window,
the phase angles are determined from the following references: the points that
reached the current threshold (which is 5 % of the absolute peak) and the points
where the voltage crossed zero on the rising and falling slopes.
Correct judgments cannot be made for half-wave rectification circuits.
Fig.5-2 V/I waveform screen
Ipk(abs): Maximum absolute peak value within the window
0.05*Ipk: Current threshold
P1, P4: The phase angles of the points where the current reached
the current threshold with the points where current began
flowing as the references
P2, P5: Phase angles of the positive and negative peaks
P3, P6: The phase angles of the points where the current decreases
to the threshold