The utility model relates to the technical field of
power system protection, in particular to a thermal
relay power
automatic testing device, which comprises a working platform, a first conveying mechanism longitudinally fixed on the working platform and used for conveying a thermal
relay, and a second conveying mechanism transversely connected on the working platform and used for transferring the thermal
relay, the working platform is further provided with a current and
voltage testing mechanism, a heating overload testing mechanism and a cooling mechanism, the current and
voltage testing mechanism, the heating overload testing mechanism and the cooling mechanism are sequentially arranged on one side of the second conveying mechanism from left to right, and the current and
voltage testing mechanism, the heating overload testing mechanism and the cooling mechanism are electrically connected. According to the utility model, the first conveying mechanism, the second conveying mechanism, the current and voltage testing mechanism and the heating overload testing mechanism are arranged, so that
automatic testing of power characteristics of the thermal relay is realized, the testing efficiency is improved, personal errors are reduced, and the accuracy and reliability of testing results are ensured.