Rec. ITU-T K.140 (07/2019) - Surge protective component application guide – Fuses
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 Characteristics and ratings
     6.1 General
     6.2 Types and construction
     6.3 Current-time characteristic
     6.4 Operating
          6.4.1 Operation under AC conditions
          6.4.2 Operation under lightning conditions
7 Surge I2t levels
     7.1 ICT ports
     7.2 AC mains ports
8 ICT port power fault current levels
9 AC mains port continuous current level
Annex A  Fusible resistors
     A.1 Fusible resistors
          A.1.1 Construction
          A.1.2 Lightning surge performance
          A.1.3 AC power performance
     A.2 Pulse absorbing resistors
          A.2.1 Construction
          A.2.2 Lightning surge performance
          A.2.3 AC power line contact performance
Appendix I  Resistive component overload performance
     I.1 Carbon composition resistors
          I.1.1 Construction
          I.1.2 Lightning surge performance
          I.1.3 AC power line performance
     I.2 Carbon film resistors
          I.2.1 Construction
          I.2.2 Lightning surge performance
          I.2.3 AC power performance
Appendix II  Printed Wiring I2t
     II.1 Melting current
          II.1.1 General
          II.1.2 Copper clad board
          II.1.3 Trace width, w
          II.1.4 Accuracy
Bibliography