Harmonics are below the limits defined in IEEE 519-2014, and G5/4.
The drive complies with IEC 61000-3-2, IEC 61000-3-4 and IEC 61000-
3-12.
Harmonic distortion
The table below shows typical values of the drive for short-circuit ratio
(I
sc
/I
1
) of 20 to 100. The values will be met if the supply network voltage
is not distorted by other loads and when the drive operates at nominal
load.
THDv (%)THDi (%)Nominal bus voltage V at PCC
< 3**3*V ≤ 690 V
Point on a public power supply system, electrically nearest to a
particular load, at which other loads are, or could be, connected.
The PCC is a point located upstream of the considered installa-
tion.
PCC
Indicates the total harmonic current distortion of the wave form.
This value is defined as the ratio (in %) of the harmonic current
to the fundamental (non-harmonic) current measured at a load
point at the particular moment when the measurement is taken:
THDi
Indicates the total magnitude of the voltage distortion. This value
is defined as the ratio (in %) of the harmonic voltage to the fun-
damental (non-harmonic) voltage:
THDv
Short-circuit ratio
I
sc
/I
1
Maximum short-circuit current at PCC
I
sc
Continuous rms input current of the drive
I
1
Amplitude of the current harmonic n
I
n
Supply voltage
U
1
Amplitude of the voltage harmonic n
U
n
* The short-circuit ratio can influence the THDi value
** Other loads can influence the THDv value
190 Technical data
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