Electric motor

A winding for an n-phase electric motor, said winding comprising:

• a continuously wound 2n-plurality of insulated conductors, said winding having at least a first 2n-plurality of individual windings wound in the same direction;
• and
• at least one further 2n-plurality of individual windings adjacent said first 2n-plurality of individual windings, said at least one further 2n-plurality of individual windings being wound in the same direction as said first 2n-plurality of individual windings,
• wherein pairs L(y) and L(y+n) of said conductors are interconnected at an end of the overall winding, where y is an integer varying from 1 to n, to form n winding pairs, each pair being adapted for connection to one phase of the motor, wherein individual wires of said pairs of said wires are configured to conduct current in opposite directions,
• the winding further being flattened such that a first and a second part of each individual winding are displaced sideways in order for parts of each winding in a winding pair conducting current in the same direction to be located immediately adjacent to each other.

A method for producing a geodetic instrument comprising an n-phase electric motor for rotating a moving part of the instrument, wherein said electric motor comprises a winding, said method comprising:

• (a) continuously and simultaneously winding a 2n-plurality of insulated conductors (L1-L6) in a same direction around a mandrel to obtain at least a 2n-plurality of individual windings (W1-W6);
• (b) axially shifting the conductors with respect to the formed individual windings to a position adjacent the individual windings obtained in step (a);
• (c) repeating steps (a) and (b) a predetermined number of times, the repeating of the steps (a) and (b) being accomplished by winding the 2n-plurality of insulated conductors around the mandrel in the same direction as step (a);
• (d) interconnecting pairs L(y) and L(y+n) of said conductors at an end of the overall winding, where y is an integer varying from 1 to n, such that conductors L(y) and L(y+n) are configured to conduct current in opposite directions;
• and
• (e) flattening the winding by displacing first and second parts of each individual winding such that parts adapted to conduct current in the same direction are placed adjacent to each other.