The utility model belongs to the technical field of electric power system electric wire netting stability analysis detects with the instrument and meter performance, concretely relates to power changer response time testing arrangement mainly includes the current -voltage generator, examination power changer, electric current pincers and data acquisition module await measuring. The experimental output of treating test power changer of current signal sudden change through the current -voltage generator has the function signal to test and data analysis, can obtain the accurate examination power changer response time that awaits measuring, has improved the precision and the accuracy of electric wire netting stability calculation model, also provides a technological means for power changer performance detects, the utility model discloses can accomplish power changer response time's survey comprehensively, fast, satisfy the electric wire netting and stabilize analysis and power changer performance detection needs.