IEC 61730-2 contains the test requirements that accompany the constructional requirements of Part 1 for the safety qualification of photovoltaic modules. It organises the tests into groups that reflect the sequence in which a module is assessed: the initial tests performed on the module as received, the tests that examine the construction and the general condition, the electrical tests carried out on the module in its normal state, and the tests performed after the module has been subjected to the environmental and mechanical stress sequences that are defined in the performance standards. Among the tests specified are the measurement of the impulse voltage withstand, the dielectric withstand test, the insulation test, the measurement of the wet leakage current, the verification of the mechanical integrity of the junction box and the test of the functionality of the bypass diodes. The standard defines the test conditions, the acceptance criteria, the number of samples required for each test and the way a module is prepared before testing, and it explains how the results of the individual tests combine to give a safety qualification.