Method for manufacturing loops for a magnetic circuit

A method for manufacturing loops of magnetic circuits for a multi-phase transformer from a magnetic strip, the method comprising at least the steps of:

• a) providing the magnetic strip of constant width in the form of a cylindrical roll extending along a longitudinal axis;
• b) cutting the roll into sections to extract therefrom first and second half-rolls of the longitudinal axis wherein each half-rolls comprises a respective boundary surface which is formed once it is separated from the other half-roll, wherein the roll is cut slantwise relative to the longitudinal axis, such that an orientation of the boundary surfaces is opposite:
• the first half-roll comprises the boundary surface outwardly oriented relative to the longitudinal axis, while the second half-roll comprises the boundary surface inwardly oriented relative to its longitudinal axis;
• and
• c) aligning the first and second half-rolls into conformity to form two loops, including at least one sub-step of reversely unwinding and rewinding the second half-roll on a mandrel.