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IEEE 487 2007

$72.04

IEEE Recommended Practice for the Protection of Wire-Line Communication Facilities Serving Electric Supply Locations

Published By Publication Date Number of Pages
IEEE 2007 134
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Revision Standard – Active. Workable methods for protecting wire-line communication circuits entering electric supply locations are presented. This document covers: the electric supply location environment; protection apparatus; service types, reliability, service performance objective classifications, and transmission considerations; protection theory and philosophy; protection configurations; installation and inspection; and safety. Remarks: Revision of IEEE Std 487-2000

PDF Catalog

PDF Pages PDF Title
1 IEEE Recommended Practice for the Protection of Wire-Line Communication Facilities Serving Electric Supply Locations
3 Title page
6 Introduction
Notice to users
Errata
Interpretations
7 Patents
Participants
9 CONTENTS
11 1. Overview
1.1 Scope
12 1.2 Purpose
2. Normative references
13 3. Definitions, acronyms, and abbreviations
3.1 Definitions
15 3.2 Acronyms and abbreviations
16 4. High-voltage environment
17 4.1 Coupling
18 4.2 Disturbances
4.2.1 Ground potential rise
27 4.2.2 Longitudinal induction
4.2.3 Lightning
33 4.2.4 Switching surges
4.2.5 Other disturbances
5. Protection apparatus
36 6. Service types, reliability, service performance objective (SPO) classifications, and transmission considerations
6.1 Service types
37 6.2 Service performance objective classifications
6.2.1 Class A service performance objective considerations
6.2.2 Class B service performance considerations
38 6.2.3 Class C service performance considerations
6.3 Transmission considerations
39 7. Protection theory and philosophy
7.1 Special wire-line protection design requirements
40 7.2 Dedicated cable
42 7.3 Concepts and concerns
7.4 General-use telecommunication cable in the electric supply location GPR zone of influence
43 8. Protection configurations
8.1 Ground potential rise plus induced voltage levels
8.1.1 Voltage level quantification
8.1.2 Voltage Level I
44 8.1.3 Voltage Level II
8.1.4 Voltage Level III
45 8.2 Basic protection system
46 8.3 Protection configurations employing isolation devices
8.3.1 Basic isolation protection configuration
47 8.3.2 Protection at the electric supply location
8.3.3 Protection at the central office or non-electric supply location remote location
48 8.4 General isolation protection configuration
49 8.4.1 Dedicated cable
8.4.2 Remote drainage
8.4.3 Local terminal
8.4.4 Composite protection system
50 8.5 Protection configurations employing neutralizing transformers
52 8.6 Protection configuration employing neutralizing in parallel with isolation on separate pairs
53 8.7 Protection configuration employing neutralizing in tandem with isolation
54 8.8 Protection configuration employing modular high dielectric and optic isolators
55 8.9 Protection practices for electric supply locations services
58 8.9.1 Description of protection table and protection schematic chart
8.9.2 Protection table for electric supply location services (Table 1)
8.9.3 Simplified protection schematic chart (Figure 22)
59 8.9.4 Use of protection table and schematic chart (Table 1 and Figure 22)
8.9.5 Treatment of idle, and unassignable or spare pairs and/or equipment
60 9. Installation and inspection considerations
9.1 Installation considerations related to neutralizing transformers
61 9.2 Periodic inspection
63 10. Safety
10.1 General safety considerations
10.2 Safety considerations in equipment design
64 10.3 Safety considerations related to installation and maintenance
65 11. Summary
66 Annex A (informative) Characteristics of protection apparatus
109 Annex B (informative) Comparison of carbon blocks, gas tubes, and solid-state protectors
112 Annex C (informative) Protection of isolating, drainage, and neutralizing transformers and other apparatus by surge arresters
116 Annex D (informative) Transmission characteristics and SPO requirements for various communication channels
118 Annex E (informative) DC offset waveform development
125 Annex F (informative) High dielectric fiber-optic isolation systems
127 Annex G (informative) Theoretical verses actual field experience GPR and related ZOI profiles
131 Annex H (informative) Bibliography
IEEE 487 2007
$72.04