AS/NZS 5033:2021

AS/NZS 5033:2021 PDF

AS/NZS5033:2021 sets out general installation and safety requirements for electrical installations of PV arrays, including d.c. array wiring, electrical protection devices, switching and earthing provisions.

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee EL042, Renewable Energy Power Supply Systems and Equipment, to supersede AS/NZS 5033:2014.

AS/NZS 5033:2014 will also remain current for SIX MONTHS and after this time it will be superseded by AS/NZS 5033:2021. Regulatory authorities that reference this standard in regulation may apply these requirements at a different time. Users of this standard should consult with these authorities to confirm their requirements.

The objective of this document is to address the safety requirements arising from the particular characteristics of photovoltaic systems. Direct current systems, and photovoltaic arrays in particular, pose hazards in addition to those derived from conventional a.c. power systems, including the ability to produce and sustain electrical arcs with currents that are not greater than normal operating currents.

At the time of publication there were limited Standards for arc detection and prevention for PV arrays.

As standards develop, there will be a revision of this document, which will require the use of this technology for PV arrays.

Many new protection features for arrays when used in grid connected applications will be implemented in inverter systems and are required by the International Standard for inverters — IEC 62109- 2. Both this document and AS/NZS 4777 require inverters that conform to IEC 62109-2 for grid connected PV systems.