Interference suppression filters

Interference suppression filters for safe power supply

Interference suppression filters and mains filters limit pulse-like, high-frequency interference voltages caused by mechanical or electronically triggered switching operations. If interference voltages are not limited, they spread via the cable network and electrically conductive connections. This can result in data errors, uncontrolled functions, and system crashes. Mains filters ensure an EMC-compliant power supply by limiting interference voltages.

Brand: Phoenix

Description

Your Advantages:

Clear and tidy control cabinets due to the mounting material and cable routing systems
Protection against pulse-like and high-frequency voltages using filters with integrated surge protection
Large number of fields of application due to various different attenuation curves Flexible designs – can be used in control cabinets and at the workplace
Compact protection using symmetrical and asymmetrical filter circuit

Interference suppression filter with dedicated filter circuit

Interference suppression filters or mains filters with a dedicated filter circuit protect against both symmetrical and asymmetrical disturbance variables.

Interference suppression filter
DIN-rail mountable
1 to 10 A nominal current

Operating principle of filter circuits

Filtering of symmetrical disturbance variables X

Interference voltages between the phase and neutral conductor are filtered.

Filtering of asymmetrical disturbance variables Y1 Y2

The respective negative phase-sequence grounded interference voltages from the phase conductor to PE and from the neutral conductor to PE are filtered.

Effective range of mains filters

An attenuation characteristic curve diagram illustrates the effective operating range of mains filters. The relevant frequency-dependent attenuation can be read according to the symmetrical or asymmetrical filter circuit.