The production of electric motors involves multiple steps. Here, we'll focus on the stator production process. Stator production involves four main steps.
The first step is inserting slot insulation paper into the stator stack. Inserting slot insulation paper into the stator stack isolates the stator coil from the stator core to prevent short circuits. It also provides support to keep the coil in a stable position within the slot.
The second step is stator winding. There are two winding processes: In-Slot Winding and Concentric Winding. In-Slot Winding is performed on the stator stack using a fully automatic stator winding machine. It features high production efficiency, good consistency, and low loss.
Concentric Winding involves manually installing stator coils onto the stator stack. It offers high flexibility, strong process compatibility, and ease of maintenance.
The third step is installing the terminal block. After installing the terminals, place the stator on a dedicated test tool and perform a power-on test. Then install the leads and capacitors and press them firmly.
The final step is vacuum impregnation of the stator. Immerse the stator assembly in insulating varnish to: Solidify and rigidize the windings. Form a compact, insulating, and corrosion-resistant protective layer on metal surfaces. Enhance oxidation resistance, wear resistance, and dielectric safety.
