IEC 62973-2:2020 applies to NiCd rechargeable batteries for auxiliary power supply systems used on railway vehicles. It is an extension of IEC 62973-1:2018 which specifies common requirements for all battery technologies of other parts of IEC 62973. Unless otherwise specified, the requirements of IEC 62973-1:2018 apply.
Battery systems described in this document are used in conjunction with charging systems onboard rolling stock, as described in IEC 62973-1:2018. Charging systems (e.g. LVPS, converters, etc.) are excluded from the scope of this document.
This document also specifies the design, operation parameters, safety recommendations, routine and type tests, as well as marking and designation. This document is used in addition to IEC 60623:2017 or IEC 62259:2003 for NiCd Cells.