The utility model discloses a generator export voltage transformer's of non - pass of check -up measurement device, including standard voltage transformer, its characterized in that, standard voltage transformer's once side links to each other with the once side of being surveyed generator export voltage transformer, standard voltage transformer's secondary side and the adjustable voltage proportion standard phase of transformation ratio cascade, and the secondary side of being surveyed generator export voltage transformer links to each other with mutual -inductor inspection appearance and voltage load box respectively, voltage proportion standard links to each other with transformer calibrator. Cascade standard voltage transformer with the voltage proportion standard phase that can accurately adjust, can realize that the electric pressure at the error check of 10kV~25kV within range secondary voltage for all generator export voltage transformer of 100V, does not need frequently to change the error that equipment alright accurate, convenient check -up generator exported voltage transformer, improved generator export voltage transformer's check -up efficiency.