VLT® Low Harmonic Drives

VLT® Low Harmonic Drives

VLT® Low Harmonic Drives

The perfect solution for

  • Meeting the toughest harmonics recommendations and standards
  • Generator-powered installations
  • Installations with generator backup
  • Soft power grids
  • Installation of drives in grids with limited excess power capacity

Low operating costs
saves energy
improved power factor
reduced load on supply network
lower transformer, switch- gear and cable losses
less control room cooling
less fan power consumption

Maximum uptime
maintenance free – problem-free operation in harsh environments

Save initial and operating costs – meeting toughest harmonics recommendations/ standards – optimized transformer/ generator grid capacity – more drives on same transformer – energy optimization

Low investment – low initial investment with maximum flexibility and possibility of future upgrades – reduced cost for wiring and external I/O controller – integrated EMC RFI-filters

Save commissioning and operation cost – userfriendly and easy to commission and operate – full overview and timely tracking of grid conditions


Power range
132-630 kW (High Overload)
160-710 kW (Normal Overload)

Voltage range
380-480 Vac 50-60 Hz

IP21 / NEMA1, IP54 hybrid

Harmonic mitigation performance: <5% THD – Meets individual harm. levels of IEEE 519 for ISC/IL>20

True Power Factor : >0.98

Displacement Factor : >0.98

PC Software & User Interface:

Commissioning tool function
Configuration and installation settings function
User settings and information function
Control panel function
Data logger and event log function
Network monitoring and measurement function
Filter load and status function
Software update function

LCP Regulation:

UL-fi e. CE marking, cULus
(UL508C) and c-tick (AS/NZS 2064)
IEEE519 / EN61000-3-xx harmonic mitigation guidelines

IEEE587/ANSI C62.41/ EN61000-4-5
surge immunity
EN55011 electromagnetic
EN50178, EN60146 safety/design

Ambient temperature

10° C to +45° C, up to 3280 feet above sea level, with relative humidity of 5% – 85% RH, class 3K3 (functions to be maintained
up to 95% RH not condensing)

Power Fuses

RFI filtering

Class A2 RFI; Class A1 RFI optional


Air cooled with primary cooling through back channel

RoHS compliant

VLT® Low Harmonic Drives are manufactured with respect for the environment and comply with the RoHS directive.

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