UL 1973 is the safety standard for battery systems used in stationary applications, such as energy storage systems. ESS units listed to UL 9540 standards must meet the requirements in UL 1973.
UL 1973 requires a safety analysis, such as a failure modes and effects (FMEA) assessment, and includes functional safety requirements for electronics and software components identified as critical to the battery system’s safety.
- Stationary applications (such as photovoltaics and wind turbine storage)
- Uninterruptible power supply (UPS) applications
- Light electric rail (LER) applications
- Stationary rail applications (e.g., rail substations)
References
- ANSI/CAN/UL Batteries for Use in Stationary and Motive Auxiliary Power Applications, UL Standards
- Energy Storage Systems: UL-1973 Certification and Battery Components, Technical White Paper, TUV SUD
See also: IEEE 1679.1