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IEC 60287-2-3 Ed. 2.0:2024 (en)
電気ケーブル-電流定格の計算-第2-3部:換気されたトンネル内に敷設されたケーブル
Electric cables - Calculation of the current rating - Part 2-3: Thermal resistance - Cables installed in ventilated tunnels

発行年月日: 2024-06-28
状態: 有効
邦訳版: 無

規格概要 IEC 60287-2-3:2024 is available as IEC 60287-2-3:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60287-2-3:2024 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.
TC TC 20
ICS 29.060.20
備考
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