FIELD: electricity.
SUBSTANCE: invention is used in the field of electric engineering and power engineering. The device contains three windings, each is placed in a separate rod from magnetic material, "star" or "zigzag" connected the inputs each of which is connected to the respective phase conductor of the electric network, and the neutral point is connected to the input of the fourth winding with alternating inductance placed on the fourth rod from magnetic material with air gaps. The output of the fourth winding is connected to the earth, all four rods are connected by yokes from one and from another side. Yokes, connecting the rods of the first three windings are joined as two symmetric three-beam stars at an angle 120 degrees with reference to each other, and the fourth rod connects joining places of yokes. Parallel to the fourth coil the variable active and reactive resistance (inductive or capacitive) is connected. The fourth coil is designed with branches, and variable active and reactive resistance through the switching device is connected parallel to a part of turns of the fourth coil. On the fourth rod the additional fifth coil is placed and to leads of this coil in parallel with it the second variable active and reactive resistance is connected.
EFFECT: improvement of accuracy of compensation of capacitor currents of single-phase short circuits to earth and expansion of range of change of the device parameters.
4 cl, 5 dwg
