1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
3.3 Symbols
4 Overvoltage and overcurrent conditions
5 Resistibility requirements (basic and
enhanced)
5.1 Basic resistibility requirement
5.2 Enhanced resistibility requirement
6 Equipment boundary
7 Test conditions
7.1 Test types
7.2 Test conditions
8 Protection coordination
8.1 General
8.2 Lightning
8.3 Power induction, earth potential rise and
power contact
8.4 Special test protector
9 Acceptance criteria
10 Tests
10.1 External symmetric pair port
10.2 External coaxial port
10.3 External d.c. and a.c. dedicated power
feeding ports
10.4 External a.c. mains power port
10.5 Internal ports
Annex A – Test schematics
A.1 Introduction
A.2 Equipment
A.3 Test generators
A.4 Waveform generation
A.5 Powering, coupling, decoupling and
terminations
A.6 Test schematics for different types of ports
Appendix I – Explanations which
illustrate test conditions
I.1 Testing
I.2 Range
of lightning and power induction test levels
I.3 Relationship between
ITU-T Rec. K.44 and other product or product family Recommendations
Appendix II – Supplementary
information for manufacturers and operators
II.1 Introduction
II.2 Primary protection coordination
II.3 MDF voltage at the input of equipment
II.4 Current test on mains ports
II.5 Earth and neutral potential rise