IEEE 487-2015

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IEEE Standard for the Electrical Protection of Communications Facilities Serving Electric Supply Locations — General Considerations

Published By	Publication Date	Number of Pages
IEEE	2015

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Description

Revision Standard – Active. General considerations are presented for the electrical protection of telecommunications facilities serving electric supply locations. This standard contains material that is common to the IEEE 487(TM) family of standards (i.e., dot-series) including fundamental protection theory; basic electrical protection philosophy, concepts, and designs; protection apparatus; service types; reliability; service performance objective (SPO) classifications; and transmission considerations. In general, special protective measures, handling procedures, and administrative procedures are necessary to provide electrical protection against damage to telecommunications facilities and equipment, maintain reliability of service, and ensure the safety of personnel.

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PDF Pages	PDF Title
1	IEEE Std 487™-2015 Front Cover
3	Title page
5	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
13	Important Notice 1. Overview 1.1 Background
14	1.2 Scope 1.3 Purpose 1.4 Not covered 2. Normative references
15	3. Definitions, acronyms, and abbreviations 3.1 Definitions
17	3.2 Acronyms and abbreviations
19	4. High-voltage environment (HVE) 4.1 Overview 4.2 Coupling
20	4.3 Disturbances
35	5. Grounding considerations 5.1 Electric power stations 5.2 Typical grounding for sites immediately outside the grid
36	5.3 Typical grounding at power line structures such as towers or poles
37	5.4 Typical grounding requirements for base transceiver station (BTS) 5.5 Step, touch, and mesh voltages for BTSs located on power line transmission or distribution structures
41	5.6 Grounding for distributed antenna systems (DASs) 6. Protection apparatus
43	7. Service types, reliability, service performance objective (SPO) classifications, and transmission considerations 7.1 Overview 7.2 Service types
44	7.3 SPO classifications
46	7.4 Transmission considerations 8. Protection theory and philosophy 8.1 Overview
47	8.2 Concepts and concerns 8.3 Ownership 8.4 General-use telecommunications cable in the electric supply location GPR ZOI
48	8.5 Aerial cable installation 8.6 Conduit containing metallic members or tracing medium 9. Protection configurations 9.1 Overview
49	9.2 GPR plus induced voltage levels
50	9.3 Basic protection system
52	9.4 Protection configurations employing isolation devices
58	9.5 General isolation protection configuration
59	9.6 Specific protection configurations
60	9.7 Protection practices for electric supply locations services 10. Inspection considerations
61	11. Safety 11.1 General safety considerations 11.2 Safety considerations in equipment design
62	11.3 Safety considerations related to installation and maintenance
63	12. Summary
64	Annex A (informative) Bibliography
68	Annex B (informative) Characteristics of protection apparatus B.1 Air gap SPDs
69	B.2 GDT characteristics
71	B.3 Solid-state SPD characteristics B.4 Telecommunications-type drainage units
74	B.5 Typical specification for optical coupler (optic coupling device) B.6 Typical specification for high-voltage disconnect jacks
75	B.7 Comparison of carbon block SPDs, GDTs, and solid-state SPDs
78	Annex C (informative) Telecommunications cable in the electric supply location GPR ZOI C.1 General-use telecommunications cable in the electric supply location ZOI
82	C.2 Evaluation of calculated values
83	Annex D (informative) Protection of isolation, drainage, NTs, and other apparatus by surge arresters D.1 Possible modes of applied voltage D.2 Equipment insulation level D.3 Protection of the transformer or other apparatus
84	D.4 Selection of the arresters
88	Annex E (informative) Transmission characteristics and SPO requirements for various telecommunications channels
89	Annex F (informative) DC offset waveform development F.1 Sine wave F.2 Sinusoidal wave F.3 Effective current F.4 RMS current
91	F.5 Symmetrical current
92	F.6 Asymmetrical current F.7 Offset current F.8 DC component
93	F.9 Total current F.10 Decay
94	F.11 Closing angle F.12 Random closing
95	Annex G (informative) High-dielectric optical fiber isolation systems G.1 Overview G.2 Protection configurations employing optical fiber isolation systems
97	Annex H (informative) Theoretical verses actual field experience GPR and related ZOI profiles H.1 Overview
100	H.2 Summation
101	Annex I (informative) Service request data I.1 Overview I.2 Location and contact information I.3 Circuit information
102	I.4 Technical data
106	Back Cover

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Standard Title	IEEE Standard for the Electrical Protection of Communications Facilities Serving Electric Supply Locations — General Considerations
Published Code	IEEE
Publication Date	2015

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