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Wind turbine manufacturers are required by transmission system operators for fault ride-through capability as the penetration of wind energy in the electrical systems grows. For this reason, testing and modeling of wind turbines and wind farms are required by the national grid codes to verify the fulfillment of this capability.Therefore, wind turbine models are required to simulate the evolution of voltage, current, reactive and active power during faults. The simulation results obtained from these wind turbine models are used for verification, validation and certification against the real wind turbines measurement results, although evolution of electrical variables during the fault and its clearance is not easy to fulfill.The purpose of this paper is to show the different stages involved in the fulfillment of the procedure of operation for fault ride-through capability of the Spanish national grid code (PO 12.3) and the 'procedure for verification, validation and certification of the requirements of the PO 12.3 on the response of wind farms in the event of voltage dips'. The process has been applied to a wind farm composed of Gamesa G52 wind turbines, and the results obtained are presented. Copyright