Motor Protection

Enerdoor developed the Motor Protection series to protect motors from harmful overvoltage and dV/dt spikes generated on the output. This is particularly useful for applications with variable frequency drives and servo-motors. 

This series includes common mode and differential mode inductances, sine wave filters and snubbers designed to work with various frequency switches, output frequencies and applications.  

The sine wave filter series reduces the pulse wave modulation (PWM) effect, converts the PWM to a sine wave and reduces dV/dt. The FIN915SF model is used with fundamental frequencies up to 2 kHz. The high frequency inductance FIN960F is a unique solution used for synchronous spindle motor applications.

To view the full Enerdoor catalog, please click here.  

FIN47SNB.50.1M Snubber Motor Protection for dV/dt

  • Reduces dV/dT
  • Remote contact indicator
  • Compact dimensions due to the parallel installation
  • Nominal voltage 0 - 500 Vac
  • Frequency range 50 - 60 Hz

FIN900 Three Phase Choke

  • Three phase choke
  • Common mode impedance
  • Rated currents from 10 - 280A
  • Nominal voltage 500 Vac
  • High impedance
  • Reduces high frequency interference (PWM)
  • Cable/ screw connections available

FIN930 Reactor on the Line Filter

  • Common mode impedance
  • Rated currents from 10 - 200A
  • Nominal voltage 600 Vac
  • Low impedance
  • Reduces dV/dt from inverter - motor
  • Long motor life

FIN950U Output Reactor Filter

  • Nominal voltage 480 Vac
  • Frequency range 50 - 60 Hz
  • Insulation class H
  • Max current frequency 100 Hz

FIN960F Load Reactor Filter

  • High frequency application
  • Nominal voltage 750 Vac
  • Rated currents from 7 - 500A
  • Synchronous electrosplindle application
  • No heating on the core
  • High linearity versus frequency

FIN905SF Three Phase Sinusoidal Filter

  • Three phase sinusoidal filter
  • Rated current from 8 - 880A
  • Nominal voltage 480 Vac
  • Reduces dV/dt
  • Increases motor life

FIN915SFH Three Phase Sinusoidal Filter

  • Three phase sinusoidal filter
  • Currents rated from 8 - 250A
  • Nominal voltage 480 Vac
  • Reduces dV/dt
  • Increases motor life
  • Very low heating for high frequency application

FINTR Toroid and FINFE Ferrite

  • Ferrite core
  • Rated available in different sizes
  • Very high permeability ferrite
  • Plastic cover protection
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