E DIN EN IEC 63349-1 VDE 0126-349-1:2025-03

IEC 63349 series documents are applicable to photovoltaic direct-driven appliance (PVDDA) controllers. The controller is applicable to systems with voltage not higher than 1 500 V DC or 1 000 V AC, and the output power of variable frequency drive (VFD) not higher than 30 kW. PVDDA controller is a device used for transforming, regulating and controlling power among sources (such as PV array, grid, energy storage, etc.) and appliance loads (such as air-conditioner, refrigerator, water pump, etc.). As a PVDDA controller, power generated by PV system is directly applied to the load, while grid may be connected, but not necessary. PVDDA controller shall have internal communication among power conversion components and external communication with power sources. But communication protocols are not covered in this document.