Resonance Harmonic Filter

The Omniverter REHF filters are used to correct harmonics or resonances at higher frequencies, typically higher than 11th Harmonic.

Conventional LC circuits can shift a potential network resonance to another frequency but cannot completely eliminate the potential resonance from the electrical system. The REHF includes a highpass resistor to eliminates resonance from the electrical system.

REHF units are designed specifically for customer site conditions. They are available at Low Voltage up to 600V, MV or HV using transformer coupling.

Electrical Resonance

Electrical resonance can occur in electrical circuits at a particular frequency (resonant frequency). Resonance can result in very high levels of voltage or current and create catastrophic equipment failure.

Potential consequences of electrical resonance - equipment failure:

  • Overvoltage
  • Overheating
  • Fire
  • Equipment Damage
Key Features & Specifications
  • Eliminate resonance
  • Correction of voltage transients due to switching of utility capacitor banks at MV or HV.
  • Can correct harmonics > 11th Harmonic
  • Eliminates voltage notching from DC drives
  • Voltage controlled, no CT’s needed
Applications
  • Utilities
  • Industrial processes
  • Semiconductor & Pharma facilities
  • Automation and robotic applications
  • Hospitals and Automation

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Frequent Ask Questions

What is electrical resonance?

Electrical resonance can occur in  electrical circuits at a particular frequency (resonant frequency). Resonance can result in very high levels of voltage or current and create catastrophic equipment failure.

What is impedance in an electrical system?

Impedance can be described as the combination of resistance, inductive and capacitive reactance in the electrical network that oppose the natural flow of power feeding the loads. In simple terms impedance can be described as a source resistance. This resistance produces a voltage drop proportional to the load current. The larger the current the higher the voltage drop.

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