1 Scope: This standard specifies the electrical and mechanical properties of concentric stranded hollow conductors. The hollow wire with concentric twisted wire frame is composed of any of the following metal single wires formed before, during, or after twisting: a) LY9 hard aluminum wire, in accordance with GB/T17048; b) LY9X pre twisted hard aluminum wire, meeting the equivalent diameter of hard aluminum wire in GB/T 17048; c) LHA2 or LHA1 hard aluminum alloy wire, in accordance with JB/T8134; d) LHA2X or LHA1X pre twisted hard aluminum alloy wire, meeting the equivalent diameter of hard aluminum alloy wire in JB/DINT8134; e) G1A or G1B ordinary strength steel wire, where A and B represent the level of galvanized coating, corresponding to level 1 and level 2 respectively; FG2A or G2B high-strength steel wire; g) G3A ultra-high strength steel wire, h) LB aluminum clad steel wire. The following are some examples of possible wire model designations, and other combinations are also allowed. - JLX, JLHazXJLHA1X - JLX/G1A, JLK/G1B, JLX/G2A, JLX/G2B, JLX/G3A - JLX/L.JLHA1, JLX/LHA2- JLX/LB, HA2X/LB, JLHA1X/LB do not exclude wire models not included above 2 Normative References: The clauses in the following documents become the clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding erroneous content) or revisions are not applicable to this standard. However, all parties who have reached agreements based on this standard are encouraged to study whether new versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T 1179-1999 Concentric Twisted Hollow Conductors with Round Conductors (eqv IEC 61089:1991) GB/T 3428-2002 Zinc Alloy Steel Wire for Overhead Strands (IEC 60888; 1987, IDT) GB/T 17048-1997 Hard Aluminum Wire for Overhead Strands (idt IEC 60889:1987) GB/T 17937-1999 Aluminum Clad Steel Wire for Electrical Purposes (idt IEC 612321993) JB/T 8134-1997 Aluminum Magnesium Silicon Alloy Round Wire for Overhead Strands (idt IEC60104987) IEC 60050 (466) International Electrotechnical Terminology Chapter 466: Overhead Lines IEC61395:1998 Strain Test Method for Overhead Conductors
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