Input filter FEE 3150, 3-phase, class A FEE3150

EMC Input Filter – Protection and Reliability of the Installation

The FEE 3150 input filter is a key element ensuring electromagnetic compatibility (EMC) in power supply installations for inverters. Designed to operate in 3-phase systems, it meets Class A requirements, guaranteeing effective interference suppression and protection of sensitive devices. It is particularly recommended for use with inverters up to 75kW.

How does the filter work and why is it important?

The interference filter works by eliminating unwanted components of the electrical signal spectrum, i.e., those that do not carry essential information. Reducing interference is crucial for stable device operation and minimizing the risk of failure. Insertion loss, measured in decibels (dB), determines the filtering effectiveness – the higher the value, the better the protection. The FEE 3150 filter helps limit both symmetrical and asymmetrical interference, which can affect the operation of other devices on the network.

Application and benefits

Filters from the FEE series are a standard solution for frequency inverters, drive systems and power supplies. They are mounted under LS inverters (footprint type), which simplifies installation and ensures an aesthetic appearance. Using an input filter translates to:

• Increased system reliability: Protection against interference minimizes the risk of damage to the inverter and connected devices.
• Compliance with EMC standards: Ensures compliance with applicable electromagnetic compatibility standards.
• Interference reduction: Improves power quality and minimizes impact on other devices on the network.
• Economical solution: The FEE 3150 filter offers high efficiency at a reasonable price.
• Easy installation: Footprint design simplifies installation under LS inverter.