scope:

This Standard sets out design 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. In grid connected systems the safety requirements of this document are however critically dependent on the inverters associated with PV arrays complying with the requirements of IEC 62109-1 and IEC 62109-2. Installation requirements are also critically dependent on compliance with IEC60364 series (see clause 4) Very small PV arrays of less than 100 W and less than 8A and less than 35 V open circuit voltage at STC are not covered by this standard. a.c. module systems are not covered by this standard. The object of this standard is to address the design safety requirements arising from the particular characteristics of photovoltaic systems. Direct current systems, and photovoltaic arrays in particular, pose some 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 protection requirements of PV arrays which develop as a result of the use of batteries in PV systems