RSHN-2150

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Power Line Filter Modules

Power line filter modules are components that are used to suppress electromagnetic interference (EMI) from entering or leaving a device or circuit. A power-line filter module, like the RSHN-2150, provides protection from external sources of interference such as voltage spikes, motor noise, radio frequency interference (RFI) and ESD (electrostatic discharge). The RSHN-2150 is a DC power line filter designed to provide ultra-low capacitance (MΩ), high frequency immunity (kHz), high-temperature stability and high-voltage transient protection.

Application

The RSHN-2150 is designed to protect sensitive equipment from both high inrush currents and transient currents generated by power mains disturbances, and to protect the power supply from external electromagnetic interference. It can be used in industrial applications where it must be able to maintain its performance in extreme temperatures. Possible applications are for high-power AC/DC to DC converters, DC-DC converters, and other industrial applications where extreme temperatures are expected.

Working Principle

The structure of the RSHN-2150 consists of common mode chokes that provide high-frequency noise isolation, capacitors that reduce high frequency noise, and varistors/metal oxide varistors that provide protection from high voltage transients. The common mode chokes provide a path for leakage currents, resulting in increased attenuation of common mode conducted noise, thus preventing EMI. The capacitors within the module provide very low impedance over a wide frequency band, which improves high frequency noise reduction.

The varistors within the module are responsible for protection from high voltage transients, such as those generated by lightning. The transient voltage is monitored at the input of the module using an ultra-low leakage current element. The varistor will absorb the excess voltage, thus protecting the device from damage. In addition to the protection from transients, the module also provides protection from overcurrent and overvoltage protection, as the current is continuously monitored.

Conclusion

The RSHN-2150 power line filter module is a cost-effective device that provides high-frequency noise isolation, capacitive noise suppression, and transient voltage protection, thus making it an ideal choice for industrial applications that require high performance in a wide range of temperatures. It also provides over-current and over-voltage protection. The RSHN-2150 is a well-designed and reliable filter module that ensures EMI protection and a high level of performance in extreme temperature conditions.

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