IEC 60794-4-1:1999

Foreword
1 Scope
2 Normative References
3 Definitions
4 Requirements for OPGW
      4.1 General
      4.2 Optical fibres
      4.3 Optical unit(s)
      4.4 Stranded wires
      4.5 Grease
      4.6 Water blocking
5 OPGW Characteristics
6 Tests
      6.1 Classification of tests
      6.2 Test requirements
      6.3 Inspection
7 Packaging and Marking
8 Test Requirements
      8.1 Stress-strain test
      8.2 Tensile performance test
      8.3 Sheave test
      8.4 Aeolian vibration test
      8.5 Galloping test (when specified)
      8.6 Creep test (when specified)
      8.7 Temperature cycling test (when specified)
      8.8 Water penetration test (when specified)
      8.9 Short-circuit test
      8.10 Lightning test
Annex A (informative) Recommended methods of calculating rated
                      tensile strength, cross-section of a
                      layer of trapezoidal shaped wires,
                      modulus of elasticity, linear expansion
                      and d.c. resistance
Annex B (normative) Sheave test methods
Annex C (normative) Aeolian vibration test method
Annex D (normative) Galloping test method
Annex E (normative) Short-circuit test method
Annex F (normative) Tests for lightning conditions
Annex G (normative) Test method for determining endurance
                    capability of OPGW against lightning
                    strike
Figure B.1 - Sheave test arrangement - Method A
Figure B.2 - Sheave test arrangement - Method B
Figure C.1 - Aeolian vibration test arrangement
Figure D.1 - Galloping test arrangement
Figure E.1 - Short-circuit test arrangement
Figure G.1 - Lightning test arrangement

Covers electrical, mechanical and optical requirements, and test methods for a composite overhead ground wire with optical fibres commonly known as OPGW.