AS/NZS 5033

The Australian standard AS/NZS 5033 is a set of guidelines and requirements for the installation and maintenance of photovoltaic (PV) systems in Australia and New Zealand. This standard ensures the safety, reliability, and performance of PV systems by providing detailed specifications for various components, such as PV modules, inverters, and mounting systems.

Some key aspects covered in AS/NZS 5033 include:

1. System design: The standard outlines the design considerations for PV systems, including system sizing, module selection, and array configuration.

2. Module mounting: It specifies the requirements for mounting PV modules, including the use of appropriate mounting structures, materials, and installation methods.

3. Electrical connections: AS/NZS 5033 provides guidelines for the electrical connections of PV systems, including wiring, connectors, and junction boxes.

4. Inverter selection and installation: The standard covers the selection and installation of inverters, including their placement, mounting, and electrical connections.

5. Earthing and bonding: It specifies the requirements for earthing and bonding of PV systems to ensure electrical safety.

6. System commissioning and testing: AS/NZS 5033 outlines the procedures for commissioning and testing PV systems to ensure their proper functioning and compliance with safety standards.

7. Maintenance and inspection: The standard provides guidelines for the maintenance and inspection of PV systems to ensure their continued safe and efficient operation.

Compliance with AS/NZS 5033 is mandatory for the installation of PV systems in Australia and New Zealand. It helps to ensure the safety of installers, users, and the general public, as well as the long-term performance and reliability of PV systems.

Key Changes and Requirements

Some key changes and requirements in the revised standard include:

•  The introduction of a new term, "disconnection point," which replaces rooftop isolators in most situations .
•  The requirement for restricted access to PV modules not on a roof or within 2.5m of the ground, floor, or platform .
•  The identification of inverters with powered neutrals as typically non-separated single-phase inverters, three-phase transformerless inverters .

Mandatory Implementation

The revised standard, AS/NZS 5033:2021, became mandatory on May 19th, 2022, after a 6-month transition period .

Related Standards

AS/NZS 5033:2021 is related to other standards, including AS/NZS 5139:2019, which covers the safety of battery systems for electrical installations