Method and apparatus for controlling a harmonic detection equipment for a railway vehicle

A method (200) for controlling a harmonic current detection equipment equipping a railway vehicle, characterized in that it comprises at least one iteration of the following steps: - determining (208) the presence or absence of at least one track circuit on at least one section of a track, and - enabling or disabling (214, 218), depending on said determination, said harmonic current detecting equipment at least said section of said railway . It also relates to a device implementing such a method, and detection equipment harmonic current and a rail vehicle comprising such a device.