Two Mathematical Comments on the Thevenin Theorem: An “Algebraic Ideal” and the “Affine Nonlinearity”

Figure 8

The situation of the electrical fault. Instead of being connected to the load of the power unit, appeared to be connected to the metallic body of the generator (machine). Understanding the generator as a nonideal voltage source having internal impedance makes it obvious that the ratio must be sufficiently small.

(a)

(b)