Performance standards for PV technology part_2

1)  Major visual defects (IEC 61215/61646):-

• A crack in a cell the propagation of which could remove more than 10% of that cell's area from the electrical circuit of the module

• Broken, cracked, or torn external surfaces, including superstrates, substrates, frames and junction boxes

• Bent or misaligned external surfaces, including superstrates, substrates, frames and junction boxes to the extent that the installation and/or operation of the module would be impaired

• Bubbles or delaminating forming a continuous path between any part of the electrical circuit and the edge of the module

• Loss of mechanical integrity, to the extent that the installation and/or operation of the module would be impaired

            Separately for IEC 61646

• Visible corrosion of any of the thin film layers of the active circuitry of the module, extending over more than 10% of any cell

• Module markings (label) are no longer attached, or the information is unreadable

2) ’Pass/fail’ criteria:-

• the degradation of maximum output power does not exceed the prescribed limit after each test nor 8% after each test sequence

• no sample has exhibited any open circuit during the tests

• the insulation test requirements are met after the tests

• there is no visual evidence of a major defects

• specific requirements of the individual tests are met

• the wet leakage current test requirements are met at the beginning and the end of each sequence and after the damp heat test

Conclusion from “pass/fail” tests

	CONDITION	RESULT
1)	Two or more samples failed in test criteria	Fail
2)	One sample failed If one or both of these new samples also fail  If both samples pass the test sequence	Remaining  2 Start from beginning Result  “Fail” Result  “Pass”

                                                                                                    ,,,,,,,,,,,, TO BE CONTINUED