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PV Inverter and BESS Converters Certification

UL Solutions provides inverter and converter certification and evaluation services for compliance with a wide range of local, national and international standards.

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PV Inverters and BESS Converters 

Solar PV inverterUL Solutions provides inverter and converter testing and certification and evaluation services for compliance with a wide range of local, national and international standards to original equipment manufacturers (OEM). The extent and scope of the testing are determined in part by whether the product is a standalone unit or intended for interconnection with a local utility. UL Solutions tests power inverters, converters and  power plant controllers (PPC)   to the requirements of all key international standards, including:

  • UL 1741, the standard for Inverters, Converters, Controllers and Interconnection System Equipment for use with Distributed Energy Resources (DER)
  • UL 62109, the standard for Safety of Power Converters for Use in Photovoltaic Power Systems
  • UL 1699B, the standard for Photovoltaic (PV) DC Arc-Fault Circuit Protection
  • IEC 62909, the standard for bi-directional grid connected power converters
  • IEC 62109, the standard for safety of power converters for use in photovoltaic power systems
  • IEC 62477, the standard for safety requirements for power electronic converter systems and equipment
  • IEC 62920, the standard for photovoltaic power generating systems - EMC requirements and test methods for power conversion equipment

UL Solutions has expanded its inverter and converter testing capabilities in Asia, Europe and North America to provide broader global conformity assessment services, including safety, functional safety, performance, grid code compliance and EMC testing.

UL Solutions can guide equipment manufacturers on the testing, evaluating and certifying requirements of standards enforced throughout the world.

Marking for Inverters and Converters

Depending on the applicability of the inverter, unique national and regional standards must be fulfilled, including: 

  • UL Certification Mark   
  • CE Marking and CE self-declaration for all Europe, except the U.K.
  • UKCA Marking and UKCA self-declaration for Great Britain (as of January 1, 2021)
  • UKNI Marking and UKNI self-declaration for Northern Ireland (as of January 1, 2021)

For the CE, UKCA, UKNI marking processes, the inverter must fulfil the following requirements:

Safety requirements for Marking and self-declaration

  • Low Voltage 2014/35/UE
  • UK Legislation; Electrical Equipment (Safety) Regulations 2016

EMC requirements for Marking and self-declaration

  • Electromagnetic Compatibility 2014/30/UE
  • UK Legislation; Electromagnetic Compatibility Regulations 2016
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