It is equipped with an electric motor with the use of a copper winding, which makes it possible to obtain a large power with small dimensions. To increase the service life and protection from external damage, the winding of the electric motor is covered with a special lacquer, which protects the winding from damage. For greater reliability, the varnish coating passes in several stages, the lacquer is applied in three layers, thus, besides the protection, the likelihood of varnish peeling decreases and decreases the likelihood of a current breakdown.