Danfoss VLT® Low Harmonic Drives
Meeting the toughest harmonics recommendations and standards
Where the performance of other low harmonic technologies depends on stability and load or effect the controlled motor, the new Danfoss VLT Low Harmonic Drive continuously regulates the network and load conditions without affecting the connected motor.
The VLT Low Harmonic Drive causes no increased winding stress or reduction of the bearing lifetime.
VLT Low Harmonic Drive is motor
friendly, with output impulse & shaft
voltages compatible with motors
conforming to IEC 60034-17/25 &
NEMA-MG1-1998 part 31.4.4.2), as per standard VLT drives.
The VLT Low Harmonic Drive meets
the toughest harmonic recommendations and gives the user full readout of the unit performance towards the grid, including graphical overview of grid behavior.
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
Benefits
- 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
Specifications
Power range :
132-630 kW (High Overload)
160-710 kW (Normal Overload)
Voltage range:
380-480 Vac 50-60 Hz
Enclosure:
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
compatibility
- 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 :
Optional
RFI filtering :
Class A2 RFI; Class A1 RFI optional
Cooling :
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.