EMC input filter FLD 3042, 3-phase, class B, for inverter power of 18.5kW FLD3042

Input filter EMC – protection and reliability of the inverter

The FLD 3042 EMC input filter is a key element ensuring the proper operation and protection of inverters with a power of up to 18.5 kW. Its task is to eliminate interference generated by the inverter, which can affect the power grid and sensitive devices. Class B, to which this filter belongs, makes it an ideal solution for both industrial and residential environments.

The FLD filter effectively suppresses symmetrical and asymmetrical interference components, minimizing leakage current. This ensures stable operation of the inverter and increases its lifespan. The filter design has been designed for easy installation and efficient heat dissipation, which translates into reliability and long-term use. Designed for power cables up to 50m long, it operates at a standard network frequency of 60Hz.

Application and benefits

EMC filters, such as the FLD 3042, are essential wherever compliance with electromagnetic compatibility (EMC) standards is required. Using the filter allows for reducing interference emissions in the frequency range from 150 kHz to 30 MHz, which is particularly important in installations sensitive to interference.

• Inverter protection: Protects the inverter from the influence of interference from the power grid, which extends its lifespan and minimizes the risk of failure.
• Compliance with standards: Enables meeting the requirements of EMC standards, which is crucial for the safe and legal use of electrical devices.
• Interference reduction: Minimizes the impact of the inverter's operation on other devices connected to the power grid.
• Simple installation: Facilitates installation and integration with existing electrical infrastructure.
• High durability: Ensures long-lasting and reliable operation in a wide temperature range (-25°C…85°C).

Construction characteristics and operating parameters

The design of the FLD filter has been designed to provide optimal interference suppression while minimizing energy losses. The IP20 protection degree protects against accidental contact with live parts. The filter is adapted to overloads – the permissible overload is 1.5 times the rated current for 1 minute per hour and 4 times during switching on. Thanks to this, it can operate in difficult industrial conditions without the risk of damage. The estimated service life is 25 years – a solid construction guarantees long-term operation without the need for replacement.