AS 4777.3-2005

This Standard specifies the requirements for grid protection devices intended to be used in inverter energy systems, with ratings up to 10 kVA for single-phase units, or up to 30 kVA for three-phase units, and for the injection of electric power through an electrical installation to the electricity distribution network. NOTES: 1 Although this Standard does not apply to larger systems, similar principles can be used for the grid protection of such systems. 2 These devices do not replace devices used for protection and/or isolation as required in AS/NZS 3000.