This technical specification provides a test method for performing a cyclic (dynamic) mechanical load test. This test may be utilized to evaluate if components within the module including solar cells, interconnect ribbons and/or electrical bonds within the module are susceptible to breakage or if edge seals are likely to fail due to the mechanical stresses encountered during installation and operation.This technical specification has historically been applied to rigid modules. It cannot be applied to flexible modules unless they are designed to be mounted in a rigid manner. This test has been written as a standalone technical specification, but it is likely to be used in conjunction with other test standards.