CORD GRIPS » EMI / RFI Cord Grips

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Overview

The Importance of Meeting EMC Requirements

When specifying and designing today's electronic control and data acquisition systems, consideration must be given to Electro-Magnetic Compatibility (EMC). If not properly addressed, electro-magnetic interference can distort and impair the efficiency of signal and data transmission which in turn can adversely affect monitoring and control functions. The end result is disrupted production, costly downtime, inconsistent or substandard material quality and even dangerous accidents. Additionally, all electronic and electrical products,devices, and equipment exported to the European Community (EC) must now be in strict compliance with EMC Directive 89/1336/EEC which sets requirements for electro--magnetic emissions and immunity. US National EMC Requirements including ANSI/IEEE 1101.10, which is harmonized with the EMC Directive 89/336/EEC, must also be considered and satisfied. For these reasons, ignoring EMC Guidelines or falling short of EMC Design Objectives is not an option for today's system and product designers.

Key Elements of Effective EMC Design

In addition to selecting and using the properly shielded control and data cabling, control components and electronic equipment should be housed within a structure that provides sufficient EMI/RFI Isolation. At the locations where shielded signal and data cables will penetrate an enclosure, housing, compartment, or panel, the cable shields must be properly grounded to the structure in order to provide the necessary EMI/RFI Protection. Additionally, cable openings must be effectively attenuated to prevent EMI/RFI Emissions from escaping containment. Over the years, special design EMI/RFI Cord Grips have been developed and used successfully to meet these EMC Requirements.