IEC 61991:2019 defines requirements applied in the design and manufacture of electrical installations and equipment to be used on rolling stock to protect persons from electric shocks.
This document is applicable to rolling stock of rail transport systems, road transport systems if they are powered by an external supply (e.g. trolley buses), magnetically levitated transport systems, and to the electrical equipment installed in these systems.
This document does not apply to:
mine railways in mines,
crane installations, moving platforms and similar transport systems on rails,
funicular railways,
temporary constructions.
The requirements for the fixed installations about the protection against the vehicles’ potential are not covered in this document.
