Single-Phase EMI Filters Protect the Power Supply


EMI-RFI filters are typically installed on the main power line. However, did you know that single-phase filters may also be used to protect the power supply, PLCs, and sensors?  This white paper explains the benefits of using a single-phase EMI filter to protect these types of equipment. 

Switching devices within a machine generate radio frequency (RF) noise which travels back to the power line of the facility. When an EMI-RFI filter is installed, it blocks this RF noise. However, did you know that EMI-RFI filters can also protect equipment from RF interference and voltage spikes that could be coming in from surrounding equipment?  

The Challenge

A power supply requires clean power in order to avoid noise or interference that could affect sensor life or machinery performance. Larger facilities have several different types of equipment which create RF interference and voltage spikes that affect other devices.

Imagine a power supply installed inside a machine located in a large facility surrounded by other large pieces of equipment. How do you think the output supply and sensors are affected?

The Solution

To minimize the risk of interference, install an EMI-RFI filter on the power line. For example, in a three-phase machine application, the filter would protect the entire machine. It would protect the two-phase power line, including the power supply, PLCs and sensors.

The Result

A compact EMI-RFI filter on the power supply input reduces the risk of noise interference in the field and increases machinery life.  Enerdoor is committed to providing the highest level of customer support possible and bringing value to our customers.

For more info see Enerdoor EMI-RFI Filters.

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