In the given system involving a three-phase squirrel-cage induction motor, the EHT (Extra High Tension) plays no direct role. EHT is a term typically used in power transmission and distribution systems, where voltage levels can reach hundreds of thousands of volts. In contrast, the induction motor operates at much lower voltage levels, typically ranging from a few hundred to a few thousand volts.

Within the system, the induction motor receives electrical power from the AC (Alternating Current) supply. The stator windings of the motor are connected to the power supply, creating a rotating magnetic field. This rotating magnetic field induces currents in the rotor windings or conductors, which generates a magnetic field of its own. The interaction between the stator and rotor magnetic fields produces torque, causing the rotor to rotate.

Therefore, in this system, the operation of the three-phase squirrel-cage induction motor does not involve EHT levels. The motor functions based on the principles of electromagnetic induction and relies on the AC power supply to create the rotating magnetic field and induce currents in the rotor.