What is IEC 62109-2 Ed.2:2018?

IEC 62109-2 Ed.2:2018 is an international standard that specifies the requirements for the design and testing of safety features for photovoltaic (PV) power conversion equipment, also known as PV inverters. This technical article aims to provide an in-depth understanding of the standard, its significance, and its impact on the renewable energy industry.

The Scope of IEC 62109-2 Ed.2:2018

The standard covers both grid-connected and stand-alone PV inverters, which are responsible for converting DC power generated by solar panels into AC power suitable for feeding into the electrical grid or for local consumption. It addresses various aspects related to safety, reliability, and performance, ensuring that the equipment meets certain quality standards and provides a consistent level of protection to users and the electrical network.

Key Requirements and Testing Procedures

IEC 62109-2 Ed.2:2018 sets forth comprehensive requirements and testing procedures for PV inverters. These include insulation requirements, overcurrent protection, protection against electric shock, and protection against fire hazards. The standard also evaluates the behavior of the equipment under different conditions such as abnormal operation, environmental stresses, and external faults to ensure its reliable performance and compliance with safety regulations.

Benefits and Implications of Compliance

Complying with IEC 62109-2 Ed.2:2018 brings several benefits to manufacturers, installers, and end-users of PV inverters. Firstly, it ensures that the equipment is safe to operate and minimizes risks associated with electrical malfunctions. Secondly, it enhances the interoperability of PV inverters with the electrical grid, ensuring smooth integration and stable operation. Lastly, compliance with international standards enhances the credibility of manufacturers and promotes consumer trust in the quality and reliability of PV inverters.