Invertek Drives

Copyright 2008
Invertek Drives Ltd



Product code: OD-OUTF1-xx/OD-OUTF2-xx/OD-OUTF3-xx/OD-OUTF4-xx/OD-OUTF5-xx/OD-OUTF6-xx // OPT-OUTF1-xx-I55/OPT-OUTF2-xx-I55/OPT-OUTF3-xx-I55

Output filters improve the quality of the output waveform

Optidrives, like the majority of other inverter drives have unfiltered outputs. In the majority of applications this will give satisfactory performance, however, in a small number of applications output filtering is strongly recommended to improve system functionality, reliability and longevity.

These applications include:

  • Long motor cables, up to 200m
  • High capacitance motor cables (ie typical "pyro" wire, used for fire protection)
  • Multiple motors connected in parallel
  • Motors without inverter grade insulation (typically older motors)

A range of high quality output filters are available for

Optidrive with the following key features:

  • Limits output voltage gradient, typically < 200V/μs
  • Limits transient over voltages at the motor terminals, typically < 1000V
  • Suppression of mains conducted interference in lower frequency ranges
  • Compensation of capacitive load currents
  • Reduction of rfi emissions from the motor cable
  • Reduction of motor losses and audiblenoise caused by ripple

Comparison of characteristics:

Specification - IP20

Specification - IP55