Standard: IEEE 1050


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This application guide was developed to identify instrumentation and control (I&C) equipment grounding methods to achieve both a suitable level of protection for personnel and equipment, and suitable electric noise immunity for signal ground references in generating stations. Both ideal theoretical methods and accepted practices in the electric utility industry are presented.

This guide is intended to give information on grounding methods for generating station instrumentation and control equipment. Grounding design is normally based on the concept of two separate grounding systems, the equipment ground and the signal reference ground. The concepts of equipment grounding are well covered in other IEEE standards. The concepts of grounding of instrument chassis, cable shields, signal pairs, and other related instrumentation and control items require special care in order to ensure that both personnel working on equipment are adequately protected from electrical shock and that interference signals are not inadvertently coupled into signal circuits. Although safety takes top priority, the I&C systems must be simultaneously safe and operationally reliable.

The basic theory and guidelines that should be understood before designing I&C grounding are presented in Clause 4. Clause 5 presents various approaches for the grounding of equipment associated with generating station I&C systems. Clause 6 presents accepted practices in grounding the shields of I&C cables, while Clause 7 covers the testing of I&C grounding systems.

Organization: The Institute of Electrical and Electronics Engineers, Inc.
Document Number: ieee 1050
Publish Date: 2004-09-24
Page Count: 101
Available Languages: EN
DOD Adopted: NO
ANSI Approved: YES
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
IEEE 1050 Change Type: INT Revision: 96 Status: INAC
IEEE 1050 Change Type: INT Update Date: 2001-05-01 Revision: 96 Status: INAC
IEEE 1050 Change Type: CRPG Update Date: 1996-04-04 Revision: 96 Status: INAC
IEEE 1050 Change Type: Update Date: 1996-04-04 Revision: 96 Status: INAC
IEEE 1050 Change Type: Revision: 3 Status: INAC
IEEE 1050 Change Type: Update Date: 1989-02-02 Revision: 89 Status: INAC
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