Bender B93100735, Manual

Page: 54 / 116

Power Quality
54 PEM735_D00084_02_M_XXEN/06.2020
6.3.7 Interharmonic voltages
An interharmonic voltage is a sinusoidal voltage with a frequency not equal to an inte-
ger multiple of the fundamental frequency (e.g.
f
n
= 50 Hz)
Interharmonic voltages at closely adjacent frequencies can appear at the same time
forming a wide band spectrum. The level of interharmonics is increasing due to the de-
velopment of frequency converters and similar control equipment. Levels are under
consideration, pending more experience.
In certain cases, interharmonics, even at low levels, give rise to flicker or cause interfer-
ence in ripple control systems.
Fig. 6.16: Interharmonic voltages (detailed view page 1)
The display shows:
Use the and buttons to navigate between the individual pages of
the interharmonics. Activate fast automatic scrolling by pressing and
holding the arrow button.
Press the "ENTER" or the "ESC" button to return to the report overview.
Display text Description Note
U1…3 Avg Value (%) Ø measured value per phase Percentage