IEC 62109-3:20 20涵盖了与光伏（PV）模块或系统机械和/或电气结合的电子元件的特定安全要求。 机械和/或电气结合意味着电子设备与光伏元件的整个组合作为一个产品出售。然而，本文档中提供的测试也可用于评估单独出售且旨在彼此靠近安装的PV模块和电子设备的兼容性。 本文件要求的目的是为以下类型的集成电子设备（统称为模块集成设备（MIE））提供额外的安全相关测试要求: a)A型MIE，其中光伏元件可根据IEC 61730评估为光伏模块-1和IEC 61730？2独立于电子元件； b)B型MIE，其中PV元件不能独立于电子元件根据IEC 61730-1和IEC 61730-2评估为PV模块。

IEC 62109-3:2020 covers the particular safety requirements for electronic elements that are mechanically and/or electrically incorporated with photovoltaic (PV) modules or systems.
Mechanically and/or electrically incorporated means that the whole combination of electronic device with the photovoltaic element is sold as one product. Nevertheless, tests provided in this document may also be used to evaluate compatibility of PV modules and electronic devices that are sold separately and are intended to be installed close to each other.
The purpose of the requirements of this document is to provide additional safety-related testing requirements for the following types of integrated electronics, collectively referred to as module integrated equipment (MIE):
a) Type A MIE where the PV element can be evaluated as a PV module according to IEC 61730-1 and IEC 61730？2 independently from the electronic element;
b) Type B MIE where the PV element cannot be evaluated as a PV module according to IEC 61730-1 and IEC 61730-2 independently from the electronic element.