GridHawk® Series Advantages

February 21, 2021

GridHawk Passive Harmonic Filters

CTM’s GridHawk series passive harmonic filters boast several key advantages over market standard harmonic filters. These advantages include:

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CTM Filters Lower PM Motor Drive Investment

Lower the capital investment (CAPEX) of your motor drive system. Avoid costly derates, without sacrificing performance. A better solution exists today.   CTM HighSine™ & FlexSine® Filters  Lower the capital investment (CAPEX) of your motor drive...

High Frequency Filtering For High Speed Motors

High Frequency Motor Applications Require Extra Filtering High frequency PM motor applications lead to higher harmonic distortion for the entire motor drive system. To account for this one can either reduce the harmonics by derating the VFD, increasing the drive cost...

Film Capacitors vs. Electrolytic Capacitors

Film Capacitor Advantages CTM Magnetics utilizes high-reliability poly-film capacitors. Compared to the electrolytic capacitors used in competitors’ filters, CTM's film capacitor advantages include higher temperature ratings, higher surge voltage ratings, lower ESR...

Sealed Contactors Protect Outdoor Harmonic Filters

Sealed Contactors Protect Outdoor Harmonic Filters Many harmonic filters use NEMA 3R outdoor cabinets in blowing dust or high humidity environments. A harmonic filter waiting in the field for 30 days to be connected can collect enough dust on the contactor to fail on...

CTM Sine Wave Filters Don’t Create Common Mode Noise

Common Mode Noise Protection Common-mode (bearing) current can have disastrous effects on induction motors, leading to electric fluting and premature bearing failure. Conventional sine wave filters introduce substantial common mode noise that will damage the motor....

Impact of Cable Connection Length on Harmonic Distortion

The Problem With Cable Length Long cables increase harmonic distortion for the overall motor drive system (figure 1). CTM discovered the effect of cable lengths on harmonic distortion through customer provided field data. Due to the additional noise generated from the...

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