ARC SUPPRESSION UNIT FOR CAPACITANCE CURRENT COMPENSATION IN MEDIUM VOLTAGE NETWORKS Russian patent published in 2017 - IPC H01F29/14 

FIELD: electricity.

SUBSTANCE: arcing unit contains neutral forming transformer and reactor, made on a common magnetic core of the 4 rods: 3 on a spatial rods, which are shifted by an angle 2π/3 relative to each other, established working winding neutral forming transformer connected on a "star-zigzag" or "Star-double zigzag" and additional winding, collected by a scheme Y or Z; on the 4th magnetic rod having air gaps, and built in the center of a three-phase magnetic system, a working and a secondary winding with taps and has consistently included with current transformer windings. The joints between the transformer cores in their contact place are closed from the outer transformer part with magnetic shunts, and the ratio of the cross sections of 3 bars of transformer and reactor bar is defined as 1: 1:1:1.5, wherein air gaps at central bar evenly spacedalong the length of the core is indented from the edges of the thickness of the rod of the transformer.

EFFECT: reduction of active power losses, consumption of materials and dimensions, increase operational reliability and simplify technical maintenance.

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