For the primary circuit the reasoning in the previous case remains valid and, that is, the magnetizing current is sinusoidal and so the fluxes and, together with them, the induced electromagnetic frequencies will be deformed. In the secondary the induced electromagnetic frequencies are in series in the closed triangle mesh. Being out of phase by 120°, the fundamental components at 50 Hz give rise to a zero resultant, whereas the third-order harmonic components at 150 Hz, being in phase, also impose the circulation of a current at 150 Hz. On the basis of Lenz’s law, such third-harmonic current will tend to oppose the cause that generated it and will therefore tend to limit the third harmonic in the fluxes. It follows that with the triangle link of the secondary the deformation of the induced electromagnetic frequencies will decrease in a significant manner.