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IEC TS 62915-2018 pdf free

IEC TS 62915-2018 pdf free.Photovoltaic (PV) modules – Type approval, design and safety qualification – Retesting.
This clause is separated into one subclause each for crystalline silicon and for thin-film technologies. The document is organized by major modification headings with specific supporting examples and parenthetical reference to the specific clauses of the relevant IEC standards.
Any change in the design, materials, components, material combinations, manufacturers or processing of the PV module type family from the last tested version may require a repetition of some or all of the qualification tests according to the clauses that follow in order to maintain type and safety approval. For any change in material specification, including, e.g., electrical, optical, mechanical properties, the nominal values and tolerances shall be considered. For any assessment of a new thickness or dimension, the initially tested thickness or dimension shall be used as reference. Any variation of a parameter may be assessed as change if the new value is out of the tolerance from the nominal value of this parameter.
Materials in direct contact with each other shall be tested in all applicable combinations. The required test items shall be selected only from those tests which are applicable for change of both materials. An example for an assessment procedure is given in Annex A, Clause A.4.
The number of samples to be included in the retesting program and the pass criteria are to be taken from the relevant clause/subclause of the referenced standards (‘pass criteria’).
Each PV module delivered for retesting shall be subjected to electrical stabilisation (MQT 19), as applicable by the relevant type approval standard.
All initial measurements as listed in the referenced standards shall be performed before the specific tests, e.g. tests MQT 01 I 03 1 06.1 115 /19 for an IEC 61215 retest program.
Any scenario including a change in the optical path or electric circuitry that requires retesting as defined hereinafter shall include an STC output power measurement (MOT 06.1). The measured stabilized power, open-circuit voltage and short-circuit current shall be assessed against the rating (Gate No. 1), and the relative change in output power shall be assessed (Gate No. 2) according to the pass criteria laid down in the standard (see IEC 61215-1:2016,
Final diagnostic measurements are listed in the referenced test procedure; as a minimum the same tests as performed initially shall be performed.
The Durability of markings (MST 05) and the Sharp edge test (MST 06) need to be considered in general for all design changes which may impact the results of these tests.
If multiple tests from a test sequence are required, they shall be done in the sequence prescribed by the referenced standard.
Changes in the PV module design might require assessment against IEC 61730-1 (requirements for construction) besides the indicated test programs.
Required tests in this Clause 4 are written for combined IEC 61215 (all parts) and IEC 61730 (all parts) evaluations. For simplification, the term gall parts is omitted in the following. For single IEC 61730 evaluations, care has to be taken that tests listed herein for IEC 61215 may also be referenced and required by IEC 61730 to ensure compliance.
4.2 Test programs for crystalline silicon PV modules
NOTE See Table A.1 for a summary of the retest requirements for crystalline silicon PV modules.
4.2.1 Modification to frontsheet
A change from glass to non-glass or vice-versa requires a full qualification.
For the following modifications:
• Different material, i.e. any change in specification of the material or any of its layers
• Glass: reduction of thickness by more than 10 %; non-glass: change of thickness by more than 20 % of any one of the individual layers (while maintaining the required minimum distance through insulation)
• For glass, if there is a reduction in the strengthening process (for example retest if change is from tempered glass to heat strengthened or annealed)
• Different surface treatment. e.g. any coating on frontsheet (inside or outside).IEC TS 62915 pdf download.

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