The object of this Standard is to specify essential safety and installation requirements for stand-alone power systems used for the supply of extra-low (ELV) and low voltage (LV) electric power.

This Standard was prepared following requests from interests involved in the solar energy industry who considered there is need for Standards covering safety, design, installation and maintenance procedures appropriate to the industry.

This Standard is Part 1 of a series, which consists of the following:

AS/NZS
4509 Stand-alone power systems
4509.1 Part 1: Safety and installation (this Standard)
4509.2 Part 2: System design guidelines

It is assumed that persons designing and/or installing stand-alone power systems have access to, and understand the requirements of, AS/NZS 3000.

This Standard was revised to—

(a) incorporate AS 4509.1 and AS 4509.3 into one document;
(b) make the Standard a joint Australian/New Zealand Standard;
(c) expand and clarify the general requirements for the safe installation of stand-alone power systems;
(d) include information on the connection of stand-alone power systems to loads; and
(e) clarify and expand requirements for battery enclosures.

The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the appendices to which they apply. A ‘normative’ appendix is an integral part of a Standard whereas an ‘informative’ appendix is for information. Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard.

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