NAM-20-331

Series:	NAM
Part Status:	Active
Filter Type:	Single Phase
Configuration:	Single Stage
Voltage - Rated DC:	250V
Voltage - Rated AC:	250V
Voltage - Rated AC (Phase to Ground/Neutral):	250V
Current:	20A
Frequency - Operating:	--
Applications:	General Purpose
Approvals:	cURus, VDE
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Chassis Mount
Termination Style:	Terminal Block
Inductance:	--

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Power Line Filter Modules – NAM-20-331 application field and working principle

Power Line Filter Modules are important components in today’s power electronic systems. NAM-20-331 is a type of Power Line Filter Modules with wide application field and excellent performance both in EMI suppression and power line junction. Therefore, in this part, the application field and working principle of the NAM-20-331 power line filter module will be introduced.

Application Field

NAM-20-331 power line filter module has a wide range of applications. It is suitable for a variety of power electronic circuits, such as AC/DC adaptors, uninterruptible power supply, motor-driven apparatus, motor controllers, displaying apparatus, high-frequency inverters, UPS, welding devices and renewable energy systems. It can also be used in high frequency communication system and other applications which contains power supply and DC/AC power conversion.

Working Principle

The working principle of NAM-20-331 power line filter module consists of four parts: passive part, capacitive part, inductive part and resistive part. In the passive part, the low-pass filters are used to block high-frequency noise and attenuate it to a certain extent. This process greatly reduces the EMI noise in the power line.
In the capacitive part, the power line filter module stores electrical energy when connected to an AC power source, and the capacitors gradually release the stored energy when the frequency of the alternating current drops below the limit. This part helps to reduce the voltage drops in the power line and allows the system to work with the required power level.
The inductive part is responsible for suppressing the conducted EMI noise. It filters out harmonics and other high-frequency noise components that could impair the power system. The inductance also provides a stable current for the power line paths, which further reduces EMI noise levels during operation. At the same time, it also helps to reduce the radiating interference of the power line.
Finally, the resistive part of the power line filter module helps to regulate and reduce the peak current of the current load, thus preventing damage to the equipment due to overloads. This part also contributes to the improvement of the system’s surge protection ability.

To conclude, NAM-20-331 power line filter module is a reliable current filter that can provide efficient EMI suppression and effective power modulation for various power electronic applications. The working principle also explains how the power line filter module works in order to provide stable output current and reduce EMI noise. With these advantages, power line filter modules are gaining more and more popularity in modern power supplies.

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