CONTENTS

 1     Scope and object
 2     References
 3     Definitions
 4     Reference configuration
 5     Construction characteristics of the cable
        5.1     General
        5.2     Failure current for buried cable or aerial cable with earth connections of the metal sheath
        5.3     Failure current for aerial cable without earth connections of the metal sheath
 6     Need for protection
 7     Protective measures
        7.1     General
        7.2     Dielectric or metal-free cables
        7.3     Choice of cable characteristics for both buried and aerial installations
        7.4     Use of shield wire for buried cables
        7.5     Route redundancy
Annex A - Frequency of primary failures
        A.1     Buried cable
        A.2     Aerial cables
        A.3     Cables entering a structure exposed to direct lightning strokes
Annex B - Sheath breakdown current
        B.1     Buried cable
        B.2     Aerial cable
                  B.2.1     Aerial cable without earth connections of the metal sheath
                  B.2.2     Aerial cable with earth connections of the metal sheath
Annex C - Tests for surge current resisitivity
        C.1     General
        C.2     Breakdown voltage test
        C.3     Test for surge current resistibility of the interconnecting elements
        C.4     Sand box test for buried cables
        C.5     Test for aerial cables
Appendix I - Shielding factor
        I.1     Shielding factor for one shield wire
        I.2     Shielding factor for multiple shield wires
        I.3     Minimum length of buried shield wires
Appendix II - Tolerable frequency of primary failures (F_a)
Appendix III - Environmental factor (K_e)
Appendix IV - Bibliography