Abstract: An electric arc detection device samples first, second and third filterings of a signal in a current window and in another window. A correlation is determined between first filtering samples of the current and the other window, a correlation is determined between second filtering samples of the current and the other window, and a correlation is determined between third filtering samples of the current window and the other window. An arc is then detected as a function of the correlations.

Abstract: The invention relates to an electric arc detection method and device in which: samples of first, second and third filterings are determined, in parallel, for a signal for a current time window and for another time window, a correlation is determined among: a first correlation between said samples resulting from the first filtering and determined for the current window and samples resulting from the first filtering and determined for the other window; a second correlation between said samples resulting from the second filtering and determined for the current window and samples resulting from the second filtering and determined for the other window; a third correlation between said samples resulting from the third filtering and determined for the current window and samples resulting from the third filtering and determined for the other window; and an electric arc is detected as a function of at least said determined correlation.

Abstract: A device for measuring variations of a magnetic field generated by a first element and likely to be modulated by this first element as well as by a second distinct element present in the field, comprising a first winding adapted to the first element and a second winding adapted to the second element, the measurement device being distinct from both elements.