The supply of new and renewable energy facilities has been increasing rapidly, especially in the PV power sector. In addition to the spread of PV modules and inverters, it is urgently required to ensure safety as well as performance. In developed countries such as Germany, Japan and the USA, technical standards on safety are applied to ensure safety of the photovoltaic industry to be. Currently, technical standards for securing the safety of PV inverters are adopted by IEC, while advanced countries apply technical standards for securing safety and are certifying the safety of the solar products in accordance with the IEC standard. However, in Korea, the technical standards for the performance evaluation of PV modules and inverters are applied, but the safety technical standards are not applied. Especially, in case of PV inverter, it has certification standard of small size solar inverter(less than 10kW) and inverter of medium and large size solar power generation(more than 10kW~250kW). Examination of the contents of each test item is composed of tests to identify performance characteristics of inverter such as insulation performance, protection function, normal characteristics, transient characteristics, external accidents, and environmental tests. Therefore, in this paper, we will examine the precise technical standards and test methods for the standardization of IEC 62109, which is becoming a standard required for overseas certification such as CE and UL, focusing on the protection and safety of users.