SNZ - AS/NZS 5033
Installation and safety requirements for photovoltaic (PV) arrays
|Publication Date:||16 July 2012|
This Standard sets out general installation and safety requirements for photovoltaic (PV) arrays, including d.c. array wiring, electrical protection devices, switching and earthing up to but not including energy storage devices, power conversion equipment or loads.
The safety requirements of this Standard are critically dependent on the inverters associated with PV arrays complying with the requirements of IEC 62109-1 and IEC 62109-2 and all power conditioning equipment complying with IEC 62109 series standards.
PV arrays of less than 240 W and less than 50 V open circuit voltage at Standard Test Condition (STC) are not covered by this Standard.
This Standard shall apply three months from the date of publication with the exception of the issues identified in Appendix H.
The object of this Standard 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.
NOTE: This Standard does not include installation requirements for batteries in systems but it does cover the extra protection requirements of PV arrays that result from the use of batteries in PV systems.