IEC 62446-2-2020 pdf free.Photovoltaic (PV) systems – Requirements for testing, documentation and maintenance – Part 2: Grid connected systems – Maintenance of PV systems.
This document also addresses maintenance activities for maximizing anticipated performance such as module cleaning and upkeep of vegetation. Special considerations unique to rooftop or ground-mounted systems are summarized. This document does not cover off-grid systems or systems that include batteries or other energy storage technologies; however, parts may be applicable to the PV circuits of those systems.
This document also does not cover maintenance of medium and high voltage a.c. equipment that are sometimes integral to larger scale systems, as those requirements are not specific to PV systems.
Maintenance of PV systems is often lumped into the catch-all term operations and maintenance (O&M.) This document 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.
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.
The objectives of this document 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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
This clause of IEC 62446-1:2016 is applicable, with the following exception:
Addition
IEC TS 61724-2, Photovoltaic system performance — Part 2: Capacity evaluation method
IEC TS 61724-3, Photovoltaic system performance — Part 3: Energy evaluation method
IEC TS 61836:2016 , Solar photovoltaic energy systems — Terms, definitions and symbols
IEC 62020, Electrical accessories — Residual current monitors for household and similar uses (RCMs)
IEC 62446-1:2016, Photovoltaic (PV) systems — Requirements for testing, documentation and maintenance — Part 1: Grid connected systems — Documentation, commissioning tests and inspection
IEC TS 62446-3:2017, Pliotovoltaic (PV) systems — Requirements for testing, documentation and maintenance — Part 3: Photo voltaic modules and plants — Outdoor infrared thermography
IEC 62548, Photovoltaic (PV) arrays — Design requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC TS 61836 as well as those in Clause 3 of IEC 62446-1:2016 are applicable, with the following additions:
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp.IEC 62446-2 pdf download.