FN258-42-33

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Power line filter modules, like the FN258-42-33, are designed to protect sensitive electronic equipment from disturbances and high-voltages on the power line. The module filters out transients from the AC line, ensuring uninterrupted power supply to the connected equipment. The filter helps to maintain the signal integrity of the system, which is essential for reliable performance of the electronics and providing protection from electrical hazards.

The FN258-42-33 power line filter module is designed for use in applications such as medical imaging, industrial automation, data communications, and communications test equipment. It is a high-performance, temperature-stable, low-dropout, cost-effective solution for all such applications where suppression of undesirable Transient Voltage Suppression (TVS) and Line-to-Ground Voltage (LTV) are required.

The FN258-42-33 line filter module consists of a housing, an integrated AC line-filter, and a 1-form-A relay. The filter operates at both 50Hz and 60Hz and has a maximum current rating of 50A. It is designed to protect connected equipment from electrical disturbances such as impulse voltage, lightning strikes, and harmonic voltages. The filter has a very high attenuation level, ensuring maximum protection of the equipment.

The unit operates using a three-stage filtering system consisting of a shielded transformer, a high-performance aluminum electrolytic capacitor, and a low-dropout back-to-back current source. The filter ensures that only clean power is delivered to the connected equipment. The transformer blocks common-mode noise and also reduces the amplitude of the AC line voltage. This is followed by the capacitor which is used to block any remaining transients. Finally, the low-dropout current source eliminates any remaining noise due to the transformer and capacitor.

The filter module is designed to carry out tests such as EFT test (Electrical Fast Transient), line Imbalance testing, line-to-ground voltage measurements, and Dielectric Absorption Test (DAT) which measure the filter performance. The filter is designed to perform in temperature conditions ranging from -40°C to +85°C.

The FN258-42-33 power line filter module is designed for simple installation and with a minimum of components. It is a cost-effective solution for protecting equipment from electrical disturbances. The filter has a low-dropout current source which ensures maximum performance and reliability. The filter also offers excellent protection from transients, harmonic voltages, and line-to-ground voltages.

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