Power options are designed to ensure the best possible reliability and efficiency for AC drives in system configurations where high attention is paid to power quality.

Download the options portfolio

VLT® Advanced Harmonic Filter AHF 005 and AHF 010
  • Optimized harmonic performance for VLT® drives rated up to 250 kW
  • A patented technique reduces THD levels in the mains network to less than 5–10%
  • Perfect match for industrial automation, highly dynamic applications and safety installations
  • Line voltage and filter current:
    • 3 x 380/400/500/600/690 V...10-480 A*
      * Achieve higher ratings by connecting in parallel. See AHF 005 or AHF 010 Design Guide for details.
  • Enclosure ratings:
    • IP20 (An IP21/NEMA 1 upgrade kit is available)
    • IP00 (Forced cooling is required. There is no fan in the IP00 unit. Separate cooling measures must be implemented in the cabinet as part of the installation)
VLT® Sine-wave Filter MCC 101
  • VLT® Sine-wave Filters are positioned between the AC drive and the motor to provide a sinusoidal phase-to-phase motor voltage
  • Reduces motor insulation stress
  • Reduces acoustic noise from the motor
  • Reduces bearing currents (especially in large motors)
  • Reduces losses in the motor
  • Prolongs service lifetime
  • VLT® FC series family look
  • Line voltage and filter current:
    • 3 x 200 – 690 V, 2.5 – 800 A*
      * For higher power ratings, combine multiple modules.
  • Enclosure ratings:
    • IP00 and IP20 wall-mounted enclosures rated up to 75 A (500 V) or 45 A (690 V)
    • IP23 floor-mounted enclosures rated 115 A (500 V) or 76 A (690 V) or more
    • IP54 both wall-mounted and floor-mounted enscloures rated up to 4.5 A, 10 A, 22 A (690 V)
VLT® dU/dt Filter MCC 102
  • Reduces the dU/dt values on the motor terminal phase-to-phase voltage
  • Positioned between the AC drive and the motor to eliminate very fast voltage changes
  • The motor terminal phase-to-phase voltage is still pulse shaped but its dU/dt values are reduced
  • Reduces stress on the motor’s insulation and are recommended in applications with older motors, aggressive environments or frequent braking which cause increased DC link voltage
  • VLT® FC series family look
  • Line voltage and filter current:
    • 3 x 200 – 690 V ... 15-880 A*
      * For higher power ratings, combine multiple modules.
  • Enclosure ratings:
    • IP00 and IP20/IP23 enclosure in the entire power range
    • IP54 enclosure available up to 177 A
VLT® Common Mode Filter MCC 105
  • Positioned between the AC drive and the motor
  • They are nano-crystalline cores that mitigate high frequency noise in the motor cable (shielded or unshielded) and reduce bearing currents in the motor
  • Extends motor bearing lifetime
  • Can be combined with dU/dt and sine-wave filters
  • Reduces radiated emissions from the motor cable
  • Reduces electromagnetic interference
  • Easy to install – no adjustments necessary
  • Oval shaped – allows mounting inside the frequency converter enclosure or motor terminal box
  • Line voltage and filter current:

    • 3 x 380-690 V........... 10-480 A
VLT® Brake Resistor MCE 101
  • Energy generated during braking is absorbed by the resistors, protecting electrical components from heating up
  • Optimized for the FC-series and general versions for horizontal and vertical motion are available
  • Built-in thermo switch
  • Versions for vertical and horizontal mounting
  • A selection of the vertically mounted units are UL-recognized
  • Power range:
    • Precision electrical match to each individual VLT® drive power size for FC 102, FC 202, FC 301 and FC 302
  • Enclosure ratings:
    • IP20
    • IP21
    • IP54
    • IP65
VLT® Line Reactor MCC 103
  • Ensures current balance in load-sharing applications, where the DC-side of the rectifier of multiple drives is connected together
  • UL-recognized for applications using load sharing
  • When planning load-sharing applications, pay special attention to different enclosure type combinations and inrush concepts
  • For technical advice regarding load-sharing applications, contact Danfoss application support
  • Compatible with:
    • VLT® AutomationDrive, VLT® AQUA Drive and VLT® HVAC Drive
    • 50 Hz or 60 Hz mains supply