Page 47 - VSD_Brochure_31102023

OVERCOME THE

Clean supply
CHALLENGES OF (THDi less than 3%)

The benefits of a drive
HARMONICS without the inconvenience

of harmonics

Savings on investments

and during the lifetime
HARMONICS PERFORMANCE

TECHNOLOGY BUILT IN Major
Effortlessly meets benefits
harmonic standards
and specification

ABB’s ultra-low harmonic drives Reliability for
have excellent harmonics
performance and are perfectly your facility
suited for places that cannot
handle highharmonic content in
(1)
the network .
Quick and easy Simple to install - three wires in,
maintenance three wires out. No external
ACQ580 ACH580 ACS880
hardware required.

All-in-one concept for a The problem with

clean network harmonics
ABB’s ultra-low harmonic (ULH) drives Harmonics may cause premature failure
are designed with built-in harmonic or reduced lifespan of other electrical Generators in power plants rotate at
avoidance systems and comply with IEC equipment caused by the overheating of constant and regulated speed, resulting
61000-3-12, IEEE 519 and G5/4 harmonics network components like transformers and in a sine-wave shaped current in an AC
recommendations. Compared to other Harmonic Harmonic cables. Harmonics in the network are also grid in the ideal case.
harmonic mitigation solutions, the problems content reduction distortion responsible for disturbing other electrical
up to typically
caused by harmonics are avoided in equipment in the network that require a
the first place. ULH drives have excellent 97% 3% pure sinusoidal AC-waveform. Harmonics
harmonic performance technology built-in, may also cause unstable operation in
including active supply unit and integrated back-up generators.
low harmonic line filter. There is no need
for external harmonic filters or multi-pulse
transformers, leading to significant savings However, in the modern world, the
in the footprint. network is not pure sine wave. Electricity
networks are affected by harmonics:
higher-order oscillations introduced by
(1) The ACH580, ACQ580 and ACS880 are available in ultra-low
harmonic variants. various types of electrical equipment.

46 | Variable Speed Drives
46 | Variable Speed Drives Variable Speed Drives | 47