ELECTRICAL SINGLE-PHASE REACTOR Russian patent published in 2007 - IPC H01F27/34 H01F27/38 H01F38/08 

FIELD: the invention refers to power industry.

SUBSTANCE: it is designed for limitation of the levels of the magnetic fields of a commercial frequency produced in the ambient space in public administrative buildings with electronic-technical equipment, for example, with apparatus of relay protection and automatics or in living quarters with electrical single-phase reactors without ferromagnetic core. The known electrical single-phase reactor having a cylindrical single-row or multi-layer or multi-row winding has additionally installed one or several cylindrical single-row or multi-row shielding windings whose coils are reeled on back-to-back to the coils of the winding of the reactor and electrically in series connected with them and between themselves. The number of coils, the step of the winding, the radiuses of the coils, the distances from the upper and/or the low end-face of the winding of the reactor and the number of shielding windings and the windings of the reactor are chosen such so the voltage of the magnetic field in the reactor's ambient space be minimal, and the full inductivity of the reactor be corresponding to the prescribed.

EFFECT: reduces levels of the tension of the magnetic field of the commercial frequency produced with currents of the three-phased groups of reactors to maximum permissible level to the personnel and normalized level of influence on noise immunity.

3 cl, 66 dwg