Superseded Standard

IEEE 518-1977

IEEE Guide for the Installation of Electrical Equipment to Minimize Electrical Noise Inputs to Controllers from External Sources

The rapidly expanding use of solid-state controllers requires consideration of many factors not previously important in the design, installation, and operation of other forms of controllers. Many portions of the control circuits of solid-state controllers designed for operation at low-energy low voltage signal levels are susceptible to disturbances by excessive electrical noise. Erratic controller operation may result unless suitable precautions are taken. The following recommendations are intended as an installation guide for industrial controls involving low-energy level equipment to minimize electrical noise inputs from external sources. The electrical noise guide is comprised of six sections. Sections 1 and 2 state the scope and service conditions. Sections 3 through 5 provide the technical foundation for the recommendations given in Section 6. Section 6 is intended to stand alone as the working section of the electrical noise guide.

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