IEC 60287-3-3-2007 电缆.电流定额的计算.第3-3部分:运行条件的章节.横越外部热源的电缆

标准号：IEC 60287-3-3-2007
中文标准名称：电缆.电流定额的计算.第3-3部分:运行条件的章节.横越外部热源的电缆
英文标准名称：Electric cables - Calculation of the current rating - Part 3-3: Sections on operating conditions - Cables crossing external heat sources
标准类型：K13
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：K13
国际标准分类号：29.060.20
适用范围：This part of IEC 60287 describes a method for calculating the continuous current rating factorfor cables of all voltages where crossings of external heat sources are involved. The methodis applicable to any type of cable.The method assumes that the entire region surrounding a cable, or cables, has uniformthermal characteristics and that the principle of superposition applies. The principle ofsuperposition does not strictly apply to touching cables and hence the calculation method setout in this standard will produce an optimistic result if applied to touching cables.