FLLD3250APHI1

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Power Line Filter Modules are designed to maintain the quality of electric power and to secure reliable working of various equipment.FLLD3250APHI1 is one of them.It is an active common mode filter module that provides reliable attenuation of common-mode noise for AC lines with rated current up to 32A.

This filter module uses metalized polypropylene film, encased in a UL recognized spacer, as the medium of capacitor, thanks to which very low ESR can be obtained. Transformers used for this filter are rection-compounded type, they are superior in temperature characteristics compared to conventional ones.

FLLD3250APHI1 consists of coil, capacitor, thyristor and rectifier. It can act as a stable filter for both sinusoidal and non-sinusoidal waveforms. And it\'s capable of operating in a broad temperature range from -40℃ to +105℃.

This filter module can filter common-mode noise to an almost negligible level. Compared to other single-phase common-mode filters, it offers superior performance with very low insertion loss and excellent noise suppression of above 3dB, particularly in the frequency range below 570kHz.

Additionally, this filter module can also reduce the surge voltage coming from the AC line at turn-on. This makes it well suited for use where protection against sharp surges is required. It is an ideal choice for applications that require large current capacity with limited inrush current, such as consumer equipment, home automation, audio visual equipment, industrial automation, and medical equipment.

The working principle of FLLD3250APHI1 is simple but effective. When AC line voltage is applied to the input side of the filter module, the combined action of the coil and the capacitor will form a low pass filter, which blocks out high frequency currents and passes lower frequency currents. At the same time, the thyristor and rectifier will move the common-mode voltage into the ground, which effectively eliminates the common-mode noise.

Apart from its effectiveness in noise suppression, this filter module can also work as a current limiter, protecting the downstream equipment from excessive current. The filter is also designed to show good AC line balance, which further improves the performance of the filter.

In conclusion, FLLD3250APHI1 is a sophisticated active common-mode filter module which offers excellent noise suppression capability for AC lines with rated current up to 32A. Thanks to its unique combination of coil, capacitor, thyristor and rectifier, it can effectively eliminate noise and protect downstream equipment from current surges.

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