This manual mainly contains product information as well as guidelines for installation, operation, and maintenance. The manual does not include complete information about the photovoltaic (PV) system. Readers can get additional information at www.sungrowpower.com or on the webpage of the respective component manufacturer. This manual is valid for the following model of low-power grid-connected PV string inverters: SH3.0RS, SH3.6RS, SH4.0RS, SH5.0RS, SH6.0RS, hereinafter referred to as “inverter”.