Kikusui KHA1000, Operation Manual, Page: 52 / 274

3-4
KHA1000

2D harmonics
Harmonic current is represented in units of orders. Harmonic fluctuations can be
viewed every hour. Small, high-order harmonics can be enlarged by raising the
vertical scale sensitivity.

3D harmonics
Harmonic current is represented in units of orders. The time transition of harmonics
can be viewed in 3D display. Small, high-order harmonics can be enlarged by
raising the vertical scale sensitivity.

THC (Total Harmonic Current)
Total harmonic current (THC) is the effective value of the harmonic current
components from the 2nd to 40th orders.
The THC can be observed in real time. It is used to find the maximum THC by
changing the operating conditions of the EUT.
THC was introduced in IEC 61000-3-2 (Ed5.0), IEC 61000-3-2 (Ed3.0), IEC
61000-3-2 (Ed2.2), JIS C61000-3-2(2005) and JIS C61000-3-2(2019). The EUT,
for which the test conditions are not specified in the standards, is tested under usual
operating conditions in operation mode in which the maximum THC is generated.
List display
Fig.3-3 Example of list display (2-screen)

List
Measurement items are displayed as a list. The display items below are available.
They can be selectively displayed.
• RMS (effective value rms): Effective values of input voltage and current
• PEAK+ (peak+): Peak value of positive amplitude of input voltage and current
• PEAK- (peak-): Peak value of negative amplitude of input voltage and current