Home voltage stabilizer circuit
Since an interruption of an inductive current may result in a large voltage transient, there needs to be some mechanism to prevent this.  Inductive winding voltage LdI/dt may be snubbed or use oil filled contractors to absorb the surge with the e=4 transformer oil dielectric or some other method such as MOV’s or vacuum contactors with RC snubbers or ?. Series power R in Neutral? Show your schematic