Introduction

This chapter contains the electronics basics on electromagnetic disturbance. This is based on the following questions:

• What can electromagnetic disturbances in industrial applications actually result in?

• What are the sources of disturbance?

• How can disturbance signals interfere with useful signals?

• What types of coupling mechanisms are there and what measures should be used to avoid problems?

This knowledge is necessary in understanding possible disturbance phenomena and the preventative measures that you can take in the planning and installation of the electrical equipment in an industrial application.