ABB ACS880-11, Руководство по оборудованию

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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 =
40
2
n
2
∑ I
I
1
•
100%
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 =
40
2
n
2
∑
U
U
1
•
100%
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