The hermetic compressor consists basically of two parts: a pump and an electric motor, both housed in a hermetically sealed housing.
Stator: it is formed by a set of steel sheets, containing channels where the working coil (more externally) and the auxiliary coil (more internally) are housed.
Coils: a coil is a continuous copper wire insulated (usually by a special varnish layer) wound in the form of turns. When an electric current circulates in this wire, thus wound, a strong magnetic field will appear. In the case of the electric motor, the magnetic field is produced in such a way that it attracts the rotor, making it rotate.
Work Coil: also called the main coil, or in English "run coil", it is commonly abbreviated in electrical diagrams by the letters T, P or R. This coil generates a magnetic field that keeps the rotor in motion, remaining on throughout time the engine is energized.
Auxiliary coil: also called the start coil or in English "start coi!", It is commonly abbreviated in the electrical diagrams by the letters A or S. This coil initiates the rotation movement as well as determines its direction of rotation, in the case of hermetic compressors the rotor always rotates in the same direction of rotation. The auxiliary coil remains connected in series with the phase capacitor for as long as the compressor is energized.
