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SA/SNZ TS 62446.3:2020

Current

Current

The latest, up-to-date edition.

Photovoltaic (PV) systems - Requirements for testing, documentation and maintenance Photovoltaic modules and plants - Outdoor infrared thermography (IEC TS 62446-3:2017, MOD)

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

03-04-2020

€65.33
Excluding VAT

The objective of this Technical Specification is to define outdoor thermographic (infrared) inspection of PV modules and plants in operation. This inspection supports the preventive maintenance for fire protection, the availability of the system for power production, and the inspection of the quality of the PV modules. This document lays down requirements for the measurement equipment, ambient conditions, inspection procedure, inspection report, personnel qualification and a matrix for thermal abnormalities as a guideline for the inspection.

Committee
EL-042
DocumentType
Technical Specification
ISBN
978 1 76072 800 7
Pages
33
ProductNote
Modifies IEC TS 62446-3:2017.
PublisherName
Standards Australia
Status
Current

This part of IEC 62446 defines outdoor thermographic (infrared) inspection of PV modules and plants in operation. The inspection can include cables, contacts, fuses, switches, inverters, and batteries. This inspection supports the preventive maintenance for fire protection, the availability of the system for power production, and the inspection of the quality of the PV modules. Included in this document are the requirements for the measurement equipment, ambient conditions, inspection procedure, inspection report, personnel qualification and a matrix for thermal abnormalities as a guideline for the inspection.
This document defines outdoor thermography on photovoltaic (PV) modules and Balance-of system (BOS) components of PV power plants in operation, using passive techniques (standard system operating conditions under natural sunlight, without any external power or irradiation sources). IEC 60904-12-1 covers general methods for laboratory or production-line PV module thermographic imaging but not the specific details that are most relevant to outdoor imaging of operational power plants including BOS components.
Two different levels of inspections are currently used:
a) A simplified thermographic inspection. This is a limited inspection to verify that the PV modules and BOS components are functioning, with reduced requirements for the qualification of personnel. For example, during a basic commissioning of a PV plant.
Authoritative conclusions regarding module quality are not possible with this inspection, and examples of abnormalities are provided to aid the inspector.
b) A detailed thermographic inspection and analysis. This may include thermal signatures which differ from the examples provided, and therefore requires a deeper understanding of the thermal abnormalities. For example, it may be used for periodic inspections according to the IEC 62446 series and for trouble-shooting the cause of underperforming systems.
Absolute temperature measurements may be made. An authorized expert in PV plants, together with thermography experts can perform the inspection.

First published as SA/SNZ TS 62446.3:2020.

IEC 60269-1:2006+AMD1:2009+AMD2:2014 CSV Low-voltage fuses - Part 1: General requirements
IEC 61730-1:2016 Photovoltaic (PV) module safety qualification - Part 1: Requirements for construction
IEC 62446-1:2016 Photovoltaic (PV) systems - Requirements for testing, documentation and maintenance - Part 1: Grid connected systems - Documentation, commissioning tests and inspection
ISO 15469:2004 Spatial distribution of daylight — CIE standard general sky
IEC 62109-1:2010 Safety of power converters for use in photovoltaic power systems - Part 1: General requirements
IEC 61730-2:2016 Photovoltaic (PV) module safety qualification - Part 2: Requirements for testing
IEC 60050-131:2002 International Electrotechnical Vocabulary (IEV) - Part 131: Circuit theory
ISO 9488:1999 Solar energy Vocabulary
IEC 61095:2009 Electromechanical contactors for household and similar purposes
EN 16714-3:2016 Non-destructive testing - Thermographic testing - Part 3: Terms and definitions
IEC 61215-1:2016 Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 1: Test requirements
AS/NZS 61439.1:2016 Low-voltage switchgear and controlgear assemblies General rules (IEC 61439-1, Ed. 2.0 (2011), MOD)
IEC 60216-5:2008 Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material
ISO 9712:2012 Non-destructive testing Qualification and certification of NDT personnel
EN 50110-1:2013 Operation of electrical installations - Part 1: General requirements

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