EMC Filters for Frequency Inverters from SEVA-tec

In modern drive technology, the precise control of electric motors by frequency inverters (FI) is indispensable. However, wherever power electronics switch at high frequencies, electromagnetic interference signals are inevitably generated. To protect your systems from these influences and to comply with legal standards, SEVA-tec offers customized EMC filters.

Why are EMC filters essential for frequency inverters?

Frequency inverters operate with pulse-width modulated (PWM) signals. The extremely steep switching edges of this technology generate high-frequency interference that can propagate both through the power grid and via electromagnetic fields. Without a high-quality radio interference suppression filter, operators risk critical problems:

• Malfunctions in neighboring control systems, IT systems, and sensors.
• Shortened lifespan of motor windings and bearings due to parasitic currents.
• Violations of the EMC Directive, which can lead to legal consequences or plant shutdowns.

The Advantages of SEVA-tec Filter Solutions

The EMC filters from SEVA-tec are technically perfectly matched to the company's own frequency inverter series. They ensure that the limit values of categories C1 (residential) or C2/C3 (industrial) according to the product standard EN 61800-3 are reliably maintained.

Highlights of SEVA-tec EMC Technology

• Space-saving design: Many models are designed as footprint filters, meaning no additional space is required on the DIN rail.
• Effective attenuation: High reduction of radio interference voltages across a wide frequency spectrum.
• Optimized leakage currents: Special circuit layouts minimize unwanted leakage currents to earth, increasing the reliability of RCDs.
• Easy installation: Precisely fitting connection terminals allow for quick and error-free assembly.

Investment in Longevity and Standard Compliance

An EMC filter from SEVA-tec is much more than a legal requirement. It is an insurance policy for the process stability of your entire production. By cleanly separating the useful signal from noise, you ensure the precision of your drives and prevent costly downtime.