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IEEE Standard for the Electrical Protection of Communications Facilities Serving Electric Supply Locations -- General Considerations, 2015
- IEEE Std 487™-2015 Front Cover
- Title page
- Important Notices and Disclaimers Concerning IEEE Standards Documents
- Participants
- Introduction
- Contents
- Important Notice
- 1. Overview [Go to Page]
- 1.1 Background
- 1.2 Scope
- 1.3 Purpose
- 1.4 Not covered
- 2. Normative references
- 3. Definitions, acronyms, and abbreviations [Go to Page]
- 3.1 Definitions
- 3.2 Acronyms and abbreviations
- 4. High-voltage environment (HVE) [Go to Page]
- 4.1 Overview
- 4.2 Coupling
- 4.3 Disturbances
- 5. Grounding considerations [Go to Page]
- 5.1 Electric power stations
- 5.2 Typical grounding for sites immediately outside the grid
- 5.3 Typical grounding at power line structures such as towers or poles
- 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
- 5.6 Grounding for distributed antenna systems (DASs)
- 6. Protection apparatus
- 7. Service types, reliability, service performance objective (SPO) classifications, and transmission considerations [Go to Page]
- 7.1 Overview
- 7.2 Service types
- 7.3 SPO classifications
- 7.4 Transmission considerations
- 8. Protection theory and philosophy [Go to Page]
- 8.1 Overview
- 8.2 Concepts and concerns
- 8.3 Ownership
- 8.4 General-use telecommunications cable in the electric supply location GPR ZOI
- 8.5 Aerial cable installation
- 8.6 Conduit containing metallic members or tracing medium
- 9. Protection configurations [Go to Page]
- 9.1 Overview
- 9.2 GPR plus induced voltage levels
- 9.3 Basic protection system
- 9.4 Protection configurations employing isolation devices
- 9.5 General isolation protection configuration
- 9.6 Specific protection configurations
- 9.7 Protection practices for electric supply locations services
- 10. Inspection considerations
- 11. Safety [Go to Page]
- 11.1 General safety considerations
- 11.2 Safety considerations in equipment design
- 11.3 Safety considerations related to installation and maintenance
- 12. Summary
- Annex A (informative) Bibliography
- Annex B (informative) Characteristics of protection apparatus [Go to Page]
- B.1 Air gap SPDs
- B.2 GDT characteristics
- B.3 Solid-state SPD characteristics
- B.4 Telecommunications-type drainage units
- B.5 Typical specification for optical coupler (optic coupling device)
- B.6 Typical specification for high-voltage disconnect jacks
- B.7 Comparison of carbon block SPDs, GDTs, and solid-state SPDs
- Annex C (informative) Telecommunications cable in the electric supply location GPR ZOI [Go to Page]
- C.1 General-use telecommunications cable in the electric supply location ZOI
- C.2 Evaluation of calculated values
- Annex D (informative) Protection of isolation, drainage, NTs, and other apparatus by surge arresters [Go to Page]
- D.1 Possible modes of applied voltage
- D.2 Equipment insulation level
- D.3 Protection of the transformer or other apparatus
- D.4 Selection of the arresters
- Annex E (informative) Transmission characteristics and SPO requirements for various telecommunications channels
- Annex F (informative) DC offset waveform development [Go to Page]
- F.1 Sine wave
- F.2 Sinusoidal wave
- F.3 Effective current
- F.4 RMS current
- F.5 Symmetrical current
- F.6 Asymmetrical current
- F.7 Offset current
- F.8 DC component
- F.9 Total current
- F.10 Decay
- F.11 Closing angle
- F.12 Random closing
- Annex G (informative) High-dielectric optical fiber isolation systems [Go to Page]
- G.1 Overview
- G.2 Protection configurations employing optical fiber isolation systems
- Annex H (informative) Theoretical verses actual field experience GPR and related ZOI profiles [Go to Page]
- H.1 Overview
- H.2 Summation
- Annex I (informative) Service request data [Go to Page]
- I.1 Overview
- I.2 Location and contact information
- I.3 Circuit information
- I.4 Technical data
- Back Cover [Go to Page]