IEC 62991:2022

IEC 62991:2022 applies to source switching equipment, hereafter referred to as SSE, for household and similar uses, primarily intended to be used for energy efficiency (EE) purposes with local production and/or storage of energy.
SSE is intended to be installed in low voltage prosumer electrical installations (PEI) to deliver the electrical energy:

• either to current-using equipment (direct feeding mode or island mode);
• or to the grid (reverse feeding mode).