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 Terminology: VFD (THD OUT): The total harmonic distortion...
High Frequency Motor Applications Require Extra Filtering High frequency 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...
GridHawk Passive Harmonic Filters CTM’s GridHawk® series passive harmonic filters boast several key advantages over market standard harmonic filters. These advantages include: High Grid Voltage Survivability GridHawk® filters are unique in that they are built...
Film Capacitor Advantages CTM Magnetics utilizes high-reliability poly-film capacitors. Compared to the electrolytic capacitors used in our competitors’ filters, CTM's film capacitor advantages include higher temperature ratings, higher surge voltage ratings,...
Sealed Contactors Protect Outdoor Harmonic Filters Many harmonic filters use NEMA 3R outdoor cabinets in blowing dust or high humidity environments. A harmonic filter awaiting installation in the field for 30 days can collect enough dust on the contactor to...
Common Mode Noise Protection Conventional sine wave filters introduce a substantial amount of common mode noise. Common-mode (bearing) current can have disastrous effects on induction motors, leading to electric fluting and premature bearing failure. As a...
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...
Introduction: In order to understand the basics of reactors, we first need to look at how motor drive systems work. Motors that operate on alternating current need special power supplies that deliver power to start and stop the motor smoothly. If the motor were to...
Introduction: Passive harmonic filters are commonly used on the input side of motor drive systems. Their purpose is to mitigate the amount of harmonic distortion produced by variable frequency drives (VFDs). If this harmonic distortion is left unaddressed it can...