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IEEE 1617-2022

$36.83

IEEE Guide for Assessment, Mitigation, and Control of Corrosion of Metallic Shields for Extruded Dielectric Cables Rated 5 kV to 46 kV (Published)

Published By Publication Date Number of Pages
IEEE 2022 40
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Revision Standard – Active. A summary of the methods for detection, mitigation, and control of metallic shield corrosion in 5 kV to 46 kV underground distribution cable installed in conduit or direct buried is provided in this guide. The causes of corrosion in metallic shields and the methods available to detect this corrosion are described. The purpose of the metallic shield and the consequences of significant loss of the metallic shield are discussed. Recommendations are made for the mitigation and control of the cable metallic shield corrosion.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std 1617™-2022 Front cover
2 Title page
4 Important Notices and Disclaimers Concerning IEEE Standards Documents
8 Participants
9 Introduction
10 Contents
11 1. Overview
1.1 Scope
1.2 Purpose
1.3 Word usage
12 2. Normative references
3. Definitions, acronyms, and abbreviations
4. Purpose of the metallic shield
4.1 Path for flow of charging currents
13 4.2 Keep the non-metallic insulation shield near ground potential
4.3 Path for flow of fault currents
4.4 Reduce step and touch potential
4.5 Provide a system neutral
4.6 National codes
5. Typical metallic shield and jacket construction
5.1 Metallic shield construction
14 5.2 Jacket construction
6. Consequences of significant metallic shield corrosion
6.1 Overview
15 6.2 Cable insulation shield erosion and insulation faults
6.3 Delayed operation of protective devices
6.4 Stray and contact voltage, interference, and hazardous step/touch potential during electrical faults
6.5 Effects on power quality
6.6 Consequences of tape shield corrosion
16 6.7 Difficult removal in ducts and conduit
6.8 Effects on location of insulation faults
7. Causes of neutral corrosion
7.1 Overview
17 7.2 Galvanic corrosion cell
7.3 Corrosion cell setup on a single metal
18 7.4 Soil corrosion
7.5 Differential aeration
7.6 Unintended or stray electrical currents
7.7 The coating of concentric neutral wires
8. Detection and evaluation
8.1 Visual inspection
19 8.2 Testing with a time domain reflectometer (TDR)
21 8.3 Concentric neutral resistance measurement method
24 8.4 Surface voltage measurement technique
9. Control and mitigation
9.1 Cathodic protection using anodes and rectifiers
26 9.2 Cable replacement
9.3 Use of jacketed cable
9.4 Economic considerations with existing and new cable
29 Annex A (informative) Bibliography
31 Annex B (informative) Condition of field-aged concentric neutral found in Canada and the United States
B.1 Overview
32 B.2 USA: northeast states
33 B.3 USA: eastern
B.4 USA: southeast
34 B.5 USA: midwest
36 B.6 USA: south central
B.7 USA: southwest
37 B.8 USA: northwest
38 B.9 Canada
40 Back cover
IEEE 1617-2022
$36.83