GB/T 18912-2024Salt mist corrosion testing of photovoltaic (PV) modules (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents".

This document replaces GB/T 18912-2002 "Salt mist corrosion testing of photovoltaic

(PV) modules". Compared with GB/T 18912-2002, in addition to structural adjustments

and editorial changes, the main technical changes are as follows.

a) ADD the requirements for test samples (see Clause 4 of this document);

b) ADD general test rules (see Clause 5 of this document);

c) MODIFY test methods and requirements (see Clause 6 of this document, Clause

3, Clause 4, Clause 5, Clause 6 of the 2002 edition);

d) ADD a diagram of salt mist test sequence for photovoltaic modules (see Figure 1

of this document);

e) ADD determination requirements (see Clause 7 of this document);

f) ADD test reports (see Clause 8 of this document).

This document has modified and adopted IEC 61701.2020 "Photovoltaic (PV) modules

- Salt mist corrosion testing".

Compared with IEC 61701.2020, this document has made the following structural

adjustments.

- DELETE 6.4 in IEC 61701.2020;

- 6.4 ~ 6.7 correspond to 6.5 ~ 6.8 in IEC 61701.2020 respectively;

- Clause 7 corresponds to 7.1 and 7.2 in IEC 61701.2020;

- DELETE 7.3 in IEC 61701.2020.

The technical differences between this document and IEC 61701.2020 and their reasons

are as follows.

- DELET the content and requirements of concentrated photovoltaic modules, to

adapt to the technical conditions of China;

- MODIFY NOTE 2 in Figure 1 to a figure footnote, to meet the requirements for

the compilation of national standards of China;

Salt mist corrosion testing of photovoltaic (PV) modules

1 Scope

This document establishes test sequences for evaluating the resistance of photovoltaic

modules to salt mist corrosion.

This document applies to photovoltaic modules, including crystalline silicon

photovoltaic modules and thin-film photovoltaic modules, and does not apply to

concentrated photovoltaic modules. The purpose is to evaluate the possible effect of salt

mist environments on photovoltaic modules.

2 Normative references

The following referenced documents are indispensable for the application 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.

ISO 9223 Corrosion of metals and alloys - Corrosivity of atmospheres -

Classification, determination and estimation

NOTE. GB/T 19292.1-2018 Corrosion of metals and alloys - Corrosivity of atmospheres - Part

1 Classification, determination and estimation (ISO 9223.2012, IDT)

ISO 9227 Corrosion tests in artificial atmospheres - Salt spray tests

NOTE. GB/T 10125-2021 Corrosion tests in artificial atmospheres - Salt spray tests (ISO

9227.2017, MOD)

IEC 60068-2-52 Environmental testing - Part 2-52.Tests - Test Kb. Salt mist, cyclic

(sodium chloride solution)

NOTE. GB/T 2423.18-2021 Environmental testing - Part 2.Test methods - Test Kb. Salt mist,

cyclic (sodium chloride solution) (IEC 60068-2-52.2017, IDT)

IEC 61215-1 Terrestrial photovoltaic (PV) modules - Design qualification and type

approval - Part 1.Test requirements

IEC 61215-2 Terrestrial photovoltaic (PV) modules - Design qualification and

type approval - Part 2.Test procedures

IEC 61730-2 Photovoltaic (PV) module safety qualification - Part 2.

Requirements for testing

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