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AS/NZS 4777.1:2016 Grid connection of energy systems via inverters, Part 1: Installation requirements

Standards Australia/Standards New Zealand

Version:  First Edition 2016.  (Current)
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Supersedes: AS 4777.1-2005 Grid connection of energy systems via inverters, Part 1: Installation requirements

Draft Designation: DR AS/NZS 4777.1:2016
Document Number

The objective of the Standard is to specify safety and installation requirements for inverter energy systems (IES) intended for the injection of electric power through an electrical installation to the grid. IES are distributed energy resources when connecting to the grid and need to ensure overall safe operation of the installation and interaction with the broader grid.

This Standard is part of a series, which consists of the following:

(a) AS/NZS 4777.1, Grid connection of energy systems via inverters, Part 1: Installation requirements (this Standard).
(b) AS/NZS 4777.2, Grid connection of energy systems via inverters, Part 2: Inverter requirements.

This Standard needs to be read in conjunction with the regulations, service and installation rules of the electricity distributor approving the connection.

This Standard is required to be read in accordance with the following:

(i) AS/NZS 3000 Electrical installations (known as the Australian/New Zealand Wiring Rules).
(ii) AS/NZS 5033 Installation and safety requirements for photovoltaic (PV) arrays, where applicable.

There has been extensive revision of this Standard to cater for changes in the industry. Both this Standard and AS/NZS 5033 now require inverters that comply with IEC 62109-2, Safety of power converters for use in photovoltaic power systems, Part 2: Particular requirements for inverters, for grid-connected PV systems.

There has also been significant innovation in the areas of multiple mode IES, voltage management and commencement of enabling a smart grid, which this revision accommodates.

This Standard has also been revised to accommodate some consideration of other energy sources where relevant standards may not be available. Until installation, wiring and safety concepts have been developed to cover these other energy source technologies, this Standard provides a limited range of provisions.

Statements expressed in mandatory terms in notes to figures are deemed to be requirements of this Standard.

The term ‘informative’ has been used in this Standard to define the application of the appendix to which it applies. An ‘informative’ appendix is only for information and guidance.

Originated in Australia as AS 4777.1-2002. Previous edition 2005. Third edition jointly revised and designated as AS/NZS 4777.1:2016.



Section 1: Scope And General
Section 2: General Requirements
Section 3: Connection Of The Ies To The Electrical Installation
Section 4: Connection Of Inverter To Energy Source
Section 5: Additional Requirements
Section 6: Signs And Labels
Section 7: System Documentation And Commissioning
Appendix A: Example Signs
Appendix B: Design Notes—Multiple Mode Inverter Energy System With Stand-Alone Port And Alternate Supply Stand-Alone Distribution Switchboard
Appendix C: Design Considerations
Appendix D: Additional Recommendations For Periodic Verification And Maintenance
Appendix E: Earthing Consideration
Appendix F: Information On Electricity Distributor Requirements


Renewable Energy Power Supply Systems and Equipment.


Australasian Fire and Emergency Service Authorities Council; Australian Energy Market Operator; Australian Industry Group; Australian PV Association; Australian Solar Council; Clean Energy Council; Clean Energy Regulator; Construction, Environment and Workplace Protection, ACT Government; Consumer Electronics Suppliers Association; CSIRO; Electrical Compliance Testing Association; Electrical Regulatory Authorities Council; Electrical Safety Organisation, New Zealand; Electricity Engineers Association, New Zealand; Energy Networks Association; Engineers Australia; Institute of Electrical and Electronics Engineers; Institute of Electrical Inspectors; Institution of Professional Engineers New Zealand; Joint Accreditation System of Australia and New Zealand; Master Electricians Australia; National Electrical and Communications Association; New Zealand Electrical Institute; NSW Fair Trading; Office of the Technical Regulator, SA; Solar Energy Industries Association; Sustainable Electricity Association New Zealand; Sustainable Energy Association; University of New South Wales; Worksafe New Zealand.

978 1 76035 572 2
Standards Australia/Standards New Zealand 2016.
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