Power line filters offer multiple levels of protection to reduce the effects of electrical noise or power anomalies on electric/electronic equipment. Devices available include power line EMI/RF filters, power entry modules, and ferrite toroids. A full range of accessories is available.
Electro Magnetic Interference (EMI) or Radio Frequency Interference (RFI) is unwanted electrical noise that can interfere with signaling or communication equipment. This noise can be produced by various devices used in industrial applications including variable frequency drives, DC power supplies, and solenoids. Proper grounding and shielding is the least expensive and one of the most effective means of reducing EMI in a system, but for excessively noisy environments, EMI filters can be used to further mitigate the interference.
To learn more about electrical noise and how to diminish its affects on automation equipment, see this Applied EMI/RF Techniques Overview
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EMI / RF filters protect equipment from electrical noise. They also provide power line filtering for drives where imperfect power sources are provided and reduce harmonics in applications involving long motor leads. They can also make equipment compliant with noise limits where required.
Power entry modules are general-purpose single-stage IEC inlet filters specifically designed as line filters for 120/240 VAC, single-phase devices.
Ferrite core chokes are specifically designed to reduce common mode noise for AC and DC devices.
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