60287-3-1-1999 Cables Electriques - Calcul Du Courant Admissible - Partie 3-1: Sections Concernant Les Conditions De Fonctionnement - Conditions De Fonctionnement De Reference Et Selection Du Type De Cable (Edition 1.1 Consolidated Reprint)
Electric Cables - Calculation of the Current Rating - Part 3-1: Sections on Operating Conditions - Reference Operating Conditions and Selection of Cable Type (Edition 1.1 Consolidated Reprint)
Cables Electriques - Calcul Du Courant Admissible - Partie 3-1: Sections Concernant Les Conditions De Fonctionnement - Conditions De Fonctionnement De Reference Et Selection Du Type De Cable (Edition 1.1 Consolidated Reprint) 是非强制性国家标准，您可以免费下载前三页
This section of IEC 60287-3 is applicable to the conditions of steady-state operation of cables at all alternating voltages@ and direct voltages up to 5 kV@ buried directly in the ground@ in ducts@ troughs or in steel pipes@ both with and without partial drying-out of the soil@ as well as cables in air. The term ??steady state?? is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature@ the surrounding ambient conditions being assumed constant. This section concerns reference operating conditions and selection of cable type.