Method for producing spacers for a winding unit and voltage-resistant spacers for cast resin transformers

A method for producing spacers for a winding unit of an electrical high-voltage device, which comprises the steps of:

• mixing at least two starting components together in a mixing chamber under a vacuum to form a component mixture;
• transferring the component mixture to an extrusion housing of an extruder likewise being under vacuum, and in the extruder a transport means is disposed and equipped with a mouthpiece delimiting an outlet opening;
• and
• curing extrudate exiting from the mouthpiece by an application of heat in a vacuum, in order to obtain the spacers.

A winding unit for an electrical high-voltage device, the winding unit comprising:

• at least one winding;
• and
• spacers, said spacers being formed by:
• mixing at least two starting components together in a mixing chamber under a vacuum to form a component mixture;
• transferring the component mixture to an extrusion housing of an extruder likewise also being under vacuum, and in the extruder a transport means is disposed and equipped with a mouthpiece delimiting an outlet opening;
• and
• curing extrudate exiting from the mouthpiece by an application of heat in vacuum, in order to obtain the spacers.