: Covers systems associated with vehicle accumulator batteries or low-voltage power supplies, regardless of whether they have a direct connection to the rail contact system.
The standard's primary goal is to ensure in equipment that must function under constant stress. It covers: iec 60571 standard pdf
You're looking for information on the IEC 60571 standard, specifically in PDF format. iec 60571 standard pdf
The standard is designed to ensure high reliability and a long service life (often up to 30 years) under continuous operation. Requirements & Parameters iec 60571 standard pdf