IEC 62420-2008 容纳1个或更多间隔的同心绞架空电导线

标准号：IEC 62420-2008
中文标准名称：容纳1个或更多间隔的同心绞架空电导线
英文标准名称：Concentric lay stranded overhead electrical conductors containing one or more gap(s)
标准类型：K11
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：K11
国际标准分类号：29.060.10;29.240.20
引用标准：IEC 60104-1987;IEC 60888-1987;IEC 60889-1987;IEC 61232-1993;IEC 61395-1998;IEC 62004-2007
适用范围：This International Standard specifies the electrical and mechanical characteristics ofconcentric lay stranded overhead electrical conductors, containing one or more selfsupportingaluminium or aluminium alloy layer(s) as depicted in Figure 1, made ofcombinations of any of the following metal wires:a) hard-drawn aluminium as per IEC 60889, designated A1;b) aluminium alloy type A or B as per IEC 60104, designated A2 or A3;c) thermal resistant aluminium alloy type as per IEC 62004, designated AT1, AT2, AT3 orAT4;d) regular strength steel as per IEC 60888, designated S1A or S1B;e) high strength steel as per IEC 60888, designated S2A or S2B;f) extra-high strength steel as per IEC 60888, designated S3A;g) aluminium-clad steel as per IEC 61232, designated 20SA, 27SA, 30SA or 40SA.NOTE This standard covers the construction of self-damping conductors, as well as gap-type conductors.Although both types of conductors share a common design feature and the presence of one or more gaps betweenlayers, they are intended for different purposes. Self-damping conductors (SDC) may have more than one gap toprovide increased self-damping, whereas gap-type conductors are so designed as to allow the aluminium layers toslide freely over the core during installation, and therefore usually do not require more than one gap.The various metal combinations permitted by this standard shall be in accordance withTable 1.