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BS EN 62420:2008

Current

Current

The latest, up-to-date edition.

Concentric lay stranded overhead electrical conductors containing one or more gap(s)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

09-30-2008

1 Scope
2 Normative references
3 Terms and definitions
4 Designation system
5 Requirements for stranded conductors
  5.1 Material
  5.2 Conductor sizes
  5.3 Surface
  5.4 Stranding
      5.4.1 General
      5.4.2 Lay ratio for core wires
      5.4.3 Lay ratio for aluminium layer(s)
      5.4.4 Joints
      5.4.5 Linear mass
      5.4.6 Conductor strength
6 Tests
  6.1 Classification of tests
  6.2 Type Tests
      6.2.1 Length of sample required
      6.2.2 Joints in aluminium wires
      6.2.3 Annular gap(s)
      6.2.4 Stress-strain curves
      6.2.5 Breaking strength of conductor
      6.2.6 Creep curves
  6.3 Sample tests
      6.3.1 Cross-sectional area
      6.3.2 Overall diameter
      6.3.3 Linear mass
      6.3.4 Surface condition
      6.3.5 Lay ratio and direction of lay
      6.3.6 Breaking strength of wires after stranding (if requested)
      6.3.7 Wire canting on the outside layer (if requested)
7 Inspection
  7.1 Test location
  7.2 Acceptance or rejection
8 Packaging and marking
  8.1 Packaging
  8.2 Marking and tare
  8.3 Random lengths
Annex A (normative) - Information to be supplied by purchaser
Annex B (normative) - Stress-strain test method
Annex C (normative) - Nominal mass of grease for stranded conductors
Annex D (informative) - Alternate method of measuring the gap(s) within
                        the conductor
Annex E (informative) - Recommended conductor sizes and tables of
                        conductor properties
Annex ZA (normative) - Normative references to international
                       publications with their corresponding European
                       publications

Describes the electrical and mechanical characteristics of concentric lay stranded overhead electrical conductors, containing one or more self-supporting aluminium or aluminium alloy layer(s).

IEC 62420:2008 specifies the electrical and mechanical characteristics of concentric lay stranded overhead electrical conductors, containing one or more self-supporting alumimium or aluminium alloy layer(s) made of combination of any of the following metal wires:
- Hand drawn aluminium as per IEC 60889, designated A1;
- aluminium alloy type A or B as per IEC 60104, designated A2 or A3;
- thermal resistant aluminium alloy as per IEC 62004, designated AT1, AT2, AT3, or AT4;
- regular strength steel as per IEC 60888, designated S1A or S1B;
- high strength steel as per IEC 60888, designated S2A or S2B;
- extra-high strength steel as per IEC 60888, designated S3A;
- aluminium-clad steel as per IEC 61232, designated 20SA, 27SA, 30SA or 40SA.

Committee
GEL/7
DevelopmentNote
Supersedes 06/30156083 DC. (09/2008)
DocumentType
Standard
Pages
30
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
IEC 62420:2008 Identical
EN 62420:2008 Identical

IEC 61395:1998 Overhead electrical conductors - Creep test procedures for stranded conductors
IEC 62004:2007 Thermal-resistant aluminium alloy wire for overhead line conductor
IEC 60888:1987 Zinc-coated steel wires for stranded conductors
IEC 60104:1987 Aluminium-magnesium-silicon alloy wire for overhead line conductors
EN 60889:1997 Hard-drawn aluminium wire for overhead line conductors
IEC 60889:1987 Hard-drawn aluminium wire for overhead line conductors
IEC 61232:1993 Aluminium-clad steel wires for electrical purposes
EN 61395:1998 Overhead electrical conductors - Creep test procedures for stranded conductors
EN 61232:1995/A11:2000 ALUMINIUM CLAD STEEL WIRES FOR ELECTRICAL PURPOSES

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