IEC 63453:2025 specifies the functional requirements for the validation of simulation techniques and tools used to evaluate the dynamic interaction between overhead contact lines and pantographs, which are essential in predicting the quality of current collection. This ensures the reliability and mutual acceptance of the results from these simulations.

IEC 63453:2025 addresses the following aspects:

The input and output parameters of the simulation;
A comparison with actual line tests and their characteristics;
Validation of pantograph models;
The comparability of different simulation tools;
The application limitations of validated methods to assess pantographs and overhead contact lines.

IEC 63453:2025 applies specifically to the assessment of current collection from overhead contact lines by pantographs mounted on railway vehicles. It does not apply to trolley bus systems.