FOVT DV/DT OUTPUT FILTERS

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EMC Filters - dV/dt Output Filters - FOVT dV/dt Output Filters

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 dV/dt Output filter

  • Three phase output filter for converters.
  • Minimizes frequency converter dV/dt values.
  • For long motor cables.
  • Reduces motor heating.
  • Increases motor life.

 

General specifications

  • Maximum operating voltage: 550Vac ± 15.
  • Operating frequency: DC - 60Hz.
  • Hipot test voltage:
    - L/N-›PE: 3000Vac 2s.
    - L-›N: 2250Vdc 2s.
  • Application class: HMF Acc. TO DIN 40040
  • (-25ºC/+100ºC/95% RH, 30d).
  • Flammability class: UL 94 V2.
  • Inverter switching frequency: 4-16kHz.
  • Max. motor cable length: 50m.
FOVT

 

FOVT mounting scheme

Fast switching between inverter IGBTs causes high voltage ramps (> 4.000V/µs) whcih may be even higher in the motor windings. Fast switching also tends to shorten motor life and limits maximum cable lengths.

 

Using a PREMO dV/dt EMC filter we guarantee the maximum peak voltage will stay under 1.000V/µs, with a dV/dt value < 500V/µs.

 

Suppressing voltage peaks like this will also reduce EMI interference from the converter, will increase its life and improve its performance.