Rec. ITU-T K.147 Corrigendum 1 (01/2021) Ethernet port resistibility testing for overvoltages and overcurrents
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
     3.1 Terms defined elsewhere
     3.2 Terms defined in this Recommendation
4 Abbreviations and acronyms
5 Conventions
6 IEEE Ethernet overview
     6.1 General
     6.2 Power delivery Ethernet systems
     6.3 Twisted pair usage
     6.4 Power injection and extraction
     6.5 IEEE 802.3 content
     6.6 Terminology
     6.7 Ethernet circuit configurations
7 PoE and PoDL class voltage, current and power levels
     7.1 Single twisted-pair (PoDL) power classes
     7.2 Multiple twisted-pair (PoE) power classes
8 Surges on Ethernet systems
     8.1 Surge coupling mechanisms
     8.2 Direct coupling – permanent
     8.3 Direct coupling – transient
          8.3.1 Voltage limiters
          8.3.2 Capacitance
     8.4 Magnetic coupling
     8.5 Electric and electromagnetic coupling
     8.6 Surge resistibility design approaches
9 Resistibility test circuits
     9.1 Lightning resistibility
     9.2 Power fault resistibility
     9.3 PoDL testing
Annex A  IEEE 802.3 term glossary
     A.1 IEEE 802.3 glossary
          A.1.1 Data transfer
          A.1.2 System elements
          A.1.3 Equipment types
          A.1.4 IEEE Standard downloads
          A.1.5 Pending IEEE 802® standard downloads
Annex B  Ethernet twisted-pair DC power feeds
     B.1 Introduction
     B.2 Powering over one twisted-pair
     B.3 Powering over two twisted pairs
     B.4 Powering over four twisted pairs
Annex C  Ethernet surge test circuits based on ITU-T K-series Recommendations
     C.1 Introduction
     C.2 Test generators
          C.2.1 1.2/50-8/20 generator
          C.2.2 AC generator
     C.3 Untested port termination and coupling network
     C.4 Common-mode test circuits
     C.5 Differential-mode test circuits
     C.6 Ethernet intermediate link connections
Appendix I  IEEE 802.3 Working Group reference materials
     I.1 Overview
     I.2 Active projects
     I.3 Additional information
     I.4 Other information
     I.5 Published standards
Bibliography