Electric machine with a connection ring assembly, and method for connecting a connection ring assembly to a conductor element

A method for connecting a connection ring assembly of an electric machine to at least one conductor element of a stator winding system, wherein the method comprises:

• using a clamping tool with two clamping jaws that can be displaced relative to each other at a contact position;
• inserting a conductor end section between a first clamping jaw and a connection lug;
• inserting a further conductor end section between a second clamping jaw and the connection lug;
• effecting a relative movement between the two clamping jaws in order to clamp the conductor end section or the conductor end sections in contact with a clamping portion of the connection lug;
• and
• making a fitted connection between the connection lug and the conductor end section or the conductor end sections in the fitting portion,
• wherein the connection lug has a first width along a circumference of the connection ring assembly in the clamping portion, and a second width along the circumference of the connection ring assembly in the fitting portion, the first width being smaller than the second width.