BS IEC 60287-2-3:2017描述了计算连续电流额定系数的方法 适用于安装在通风隧道中的所有电压的电缆。该方法适用于任何类型 有线电视。该方法适用于自然通风和强制通风。假设电缆和隧道周围的纵向热传递 可以忽略不计。假设隧道内的所有电缆相同，并且假设隧道 横截面不随隧道沿线的距离而变化。交叉引用:IEC 60287-1-1:2006 Ed 2IEC 60287- 2-1:2015 ED2购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS IEC 60287-2-3:2017 describes a method for calculating the continuous current rating factor for cables of all voltages installed in ventilated tunnels. The method is applicable to any type of cable.The method applies to natural as well as forced ventilation.Longitudinal heat transfer within the cables and the surroundings of the tunnel is assumed to be negligible.All cables are assumed to be identical within the tunnel and it is assumed that the tunnel cross-section does not change with distance along the tunnel.Cross References:IEC 60287-1-1:2006 Ed 2IEC 60287-2-1:2015 ED2All current amendments available at time of purchase are included with the purchase of this document.