Input filter FEE 3003, 3-phase, class A FEE3003

Input filter – protection and reliability in your installation

The FEE 3003 input filter is a component dedicated to reducing electromagnetic interference generated by inverters and drive systems. Designed for the industrial environment (class A), it provides effective protection of the power supply network against the influence of harmonics and other unwanted signals. Its task is to suppress interference, which translates into more stable operation of connected devices and minimization of the risk of failure.

EMI filters, such as the FEE 3003, play a key role in ensuring electromagnetic compatibility (EMC) in electrical installations. They eliminate interference that can affect the operation of other devices nearby, and also meet safety standards. Thanks to this, the installation becomes more reliable and resistant to external interference.

Characteristics and application

FEE filters are characterized by high attenuation of both symmetrical and asymmetrical interference components. They are powered by a three-phase voltage of 3x380V to 480VAC and are designed to work with inverters with a power of 0.4 to 0.75 kW. The FEE filter design allows for effective heat dissipation, and the IP20 protection class ensures safe use in an industrial environment. The estimated service life is 25 years, which guarantees long-term and trouble-free operation.

These types of filters are widely used in various industries, including:

• Drive systems: Protection of inverters controlling electric motors.
• Industrial automation: Reduction of interference in PLC controllers and other automation devices.
• Energy industry: Protection of the power supply network against harmonics generated by photovoltaic inverters or other power electronic devices.
• Food industry: Ensuring stable operation of devices in an environment sensitive to electromagnetic interference.

Construction and operating parameters

FEE filters are characterized by simple installation and compact dimensions. They are designed to operate at temperatures from -25°C to +85°C and can be overloaded 4 times with the rated current during switching and 1.5 times for 1 minute per hour – which increases their resistance to peak loads. High quality workmanship and carefully selected components guarantee reliable operation for a long time. Class A of the FEE filter means its intended use for industrial applications where high interference suppression efficiency and resistance to harsh working conditions are required.