UNE-EN IEC 62446-2:2020

This clause of Part 1 is applicable with the following exception:

Addition:

1.1 Scope

This Part 2 of IEC 62446 describes basic preventive, corrective, and performance related maintenance requirements and recommendations for grid-connected PV systems. The maintenance procedures cover:

" Basic upkeep of the system components and connections for reliability, safety and fire prevention;

" Measures for corrective maintenance and troubleshooting

" Worker safety

The standard also addresses maintenance items for maximizing anticipated performance such as module washing and upkeep of vegetation. Special considerations unique to rooftop or ground-mounted systems are summarized. This standard does not cover off-grid systems or systems that include batteries or other energy storage, however parts may be applicable to the PV circuits of those systems.

The confirmation of a system s compliance with the appropriate design and installation standards is covered in Part 1 and takes place during initial project commissioning.

Maintenance of PV systems is often lumped into the catch-all term operations and maintenance (O&M.) This standard does not address business or management operational processes (e.g. forecasting, utility pricing incentives, etc.) or other considerations driven by factors outside of basic system working condition, safety and performance.

1.2 Object

The objectives of the standard are to:

" Identify a baseline set of maintenance requirements which may differ by system type (residential, commercial, utility scale), owner, or financing requirements.

" Identify additional maintenance steps that are recommended or optional.

" Identify factors to be used to determine appropriate maintenance intervals.

" Ensure that remote diagnostic methods are allowed as means for periodic verification, problem identification and early failure detection.

" Ensure that alternate means of achieving maintenance related requirements are allowed to accommodate for innovation, manufacturer specific methods, evolving customer requirements, etc.