PD IEC/TR 62095:2003

What is PD IEC/TR 62095 – finite element method for current rating about?

The finite element method is a numerical technique for solving partial differential equations. Current rating calculations for power cables require a solution of heat transfer equations which define a functional relationship between the conductor current and the temperature within the cable and its surroundings. Methods of solving the heat conduction equations are described in IEC 60287 (steady-state conditions) and IEC 60853 (cyclic conditions), for most practical applications. When these methods cannot be applied, the heat conduction equations can be solved using numerical approaches. One such approach, particularly suitable for the analysis of underground cables, is the finite element method presented PD IEC/TR 62095