UL 1741: Inverters, Converters, Controllers, and Interconnection System Equipment for Use with Distributed Energy Resources

This is the safety standard for inverters, converters, and controllers used in ESS and other renewable energy systems.

UL 1741: Summary of Testing and Performance Requirements

  • Protection against electrical hazards such as overcurrent, overvoltage, and short circuits
  • Ability to withstand physical impacts and prevent the release of hazardous materials in the event of a failure
  • Safe operation when exposed to extreme temperatures, humidity, and other environmental conditions
  • Accurate performance, including efficiency, power output, and response time
  • Reliable communication functionality with other system components and resistance to security threats including cyber-attacks
  • Grid interoperability and safe response to grid failures or abnormal conditions, validated per IEEE 1547 requirements