SA/SNZ TS 62446.3:2020
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)
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English
04-03-2020
Important note : All end users must be registered with an Account prior to user licenses being assigned.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
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| DocumentType |
Technical Specification
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| ISBN |
978 1 76072 800 7
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| Pages |
33
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| ProductNote |
Modifies IEC TS 62446-3:2017.
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| PublisherName |
Standards Australia
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| 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.
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| 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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