FN258-180-40

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Power Line Filter Modules: FN258-180-40 Application Field and Working Principle

Power line filter modules, like the FN258-180-40, provide optimal protection for electrical and electronic equipment from electromagnetic and radio frequency interference (EMI/RFI). The FN258-180-40 combines versatile topology with state-of-the-art components to provide an efficient and compact power line filter solution for most industrial applications where nominal voltages are up to 500 Vdc. It also offers excellent protection against over-voltage, surge, and power line transients.

The FN258-180-40 power line filter module features wide band high-performance EMI/RFI filtering for the applications in both AC and DC line filters. Its shielded box housing contains two integrated EMI filters with combined capacitive elements, inductive elements, and resistance elements.

The working principle of the FN258-180-40 power line filter module is based on a combination of capacitances, inductances, and resistors. Capacitors offer low-impedance forms of EMI/RFI filtering and achieve optimal attenuation performance over a broad frequency range. Inductors provide an impedance, which increases with frequency. This helps to provide a measure of protection against high frequency interference. The resistors provide an impedance and are used to improve attenuation at certain frequencies.

The FN258-180-40 power line filter module offers maximum attenuation from 150 kHz to 400 kHz. It is designed with a current rating of 0.5A to 20A and has a voltage rating of up to 500 Vdc. The filter is also constructed with an integrated ground line as well as mounting holes for easy installation.

The power line filter module features an effective way of reducing the electromagnetic noise and electrostatic charges that interfere with signals and systems. This filter characteristics help to protect sensitive equipment against any kinds of lasting damages due to high voltage surges and radio frequency disturbances. It eliminates common ground loop problems and electromechanical noise such as buzz and humming.

The FN258-180-40 power line filter module is a great solution providing optimal protection and is particularly suitable for industrial and commercial applications, including power conditioning systems, power supplies, computers, communication electronics, and other electronic equipment. It requires no additional shielding and it is compliant with the IEC/EN 61000-4 standards.

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