Table of Contents

1 Overview
  1.1 Scope
  1.2 Purpose
2 Normative references
3 Definitions and acronyms
  3.1 Definitions
  3.2 Acronyms
4 Design considerations for electrical noise minimization
  4.1 Typical noise sources and their characteristics
  4.2 Noise-coupling methods
  4.3 Techniques for electrical noise minimization
5 I&C system
  5.1 Grounding philosophy
  5.2 Types of signal ground systems
  5.3 Separation criteria for circuits
  5.4 I&C system power considerations
  5.5 Surge protection considerations
  5.6 Other grounding considerations
  5.7 Generating station EMI environment
6 Signal cable shield grounding
  6.1 Cable shield requirements
  6.2 Analysis of shield grounding practices
  6.3 Other cable shielding considerations
  6.4 Comparison of cable shielding effectiveness
  6.5 Common practices in shielding cables for distributed
      control and programmable logic controller circuits
  6.6 Central distribution frame (CDF) grounding practice
7 Testing
  7.1 General
  7.2 Sources of galvanic (conductive) ground loops
  7.3 Galvanic ground loop prevention and detection
  7.4 Testing for ground loops
  7.5 Signal ground system integrity
  7.6 Maintenance of the signal ground system
Annex A (informative) Bibliography
Annex B (informative) Conformance with local safety codes
Annex C (informative) Examples of I&C grounding methods

Abstract

Recognizes 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.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Institute of Electrical & Electronics Engineers
Pages
ISBN
Supersedes	IEEE DRAFT 1050 : 0