GB/T 9535.1-2025Terrestrial photovoltaic (PV) modules—Design qualification and type approval—Part 1: Test requirements (English PDF)

1 Scope and object

This International Standard lays down IEC requirements for the design qualification and type approval of terrestrial photovoltaic modules suitable for long-term operation in general open-air climates, as defined in GB/T 4797.1.It applies only to crystalline silicon types. Standards for thin-film modules and other environments, such as marine or equator conditions, are under consideration.

This standard does not apply to modules used with concentrators.

The object of this test sequence is to determine the electrical and thermal characteristics of the module and to show, as far as is possible within reasonable constraints of cost and time, that the module is capable of withstanding prolonged exposure in climates described in the scope. The actual lifetime expectancy of modules so qualified will depend on their design, their environment and the conditions under which they are operated.

2 Normative References

The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.

GB/T 2421-1989 Basic environmental testing procedures for electric and electronic products -General and guidance (eqv IEC 68-1:1988) GB/T 2423.3-1993 Basic environmental testing procedures for electric and electronic products - Test Ca. Damp heat, steady state (eqv IEC 68-2-3:1984) GB/T 2423.29-1982 Basic environmental testing procedures for electric and electronic products -Test U. robustness of terminations and integral mounting devices (eqv IEC 68-2-21:1980) GB/T 2828-1987 Sampling procedures and tables for lot-by-lot inspection by attributes (Apply to inspection of successive lots or batches)

3 Sampling

Eight modules for qualification testing (plus spares as desired) shall be taken at random from a production batch or batches, in accordance with the procedure given in GB/T 2828.The modules shall have been manufactured from specified materials and components in accordance with the relevant drawings and process sheets and have been subjected to the manufacturer's normal inspection, quality control and production acceptance procedures.

4 Marking

Each module shall carry the following clear and indelible markings.

5 Testing

The modules shall be divided into groups and subjected to the qualification test sequences in

Figure 1, carried out in the order laid down.

6 Pass Criteria

A module design shall be judged to have passed the qualification tests, and therefore to be IEC type approved, if each test sample meets all the following criteria.

7 Major Visual Defects

For the purposes of design qualification and type approval, the following are considered to be major visual defects.

8 Report

Following type approval, a certified report of the qualification tests, with measured performance characteristics and details of any failures and re-tests, shall be prepared by the test agency in accordance with IECQ procedure QC 001 002.A copy of this report shall be kept by the manufacturer for reference purposes.

9 Modifications

Any change in the design, materials, components or processing of the module may require a repetition of some or all of the qualification tests to maintain type approval.

10 Test Procedures