DEVICE FOR compensate for capacitive currents at single-phase ground fault in electrical networks with isolated neutral

摘要

1. A device for compensation of capacitive currents in single-phase earth faults in electric networks with isolated neutral, comprising three windings, each of which is located on a separate rod of magnetic material, connected on a "star" or "zigzag", the inputs of which are connected with each its corresponding phase conductor of the mains, as the neutral point is connected to the input of the fourth coil with variable inductance disposed on the fourth rod of magnetic material with air gaps, yield fourth winding is connected to ground, all four rods connected yokes with one and the other side, characterized in that the yoke, connecting rods of the first three windings are joined as two symmetrical three-prong stars at an angle of 120 degrees with respect to each other, and a fourth rod connects the space yarm.2 docking. An apparatus for compensating capacitive currents at single-phase earth faults in electric networks with isolated neutral according to claim 1, characterized in that the fourth coil connected in parallel AC-active reactive (inductive or capacitive) soprotivlenie.3. An apparatus for compensating capacitive currents at single-phase earth faults in electric networks with isolated neutral according to claim 2, characterized in that the fourth coil provided with taps, and the variable-reactance actively through the switching device connected in parallel to the fourth part turns katushki.4. An apparatus for compensating capacitive currents at single-phase earth faults in electric networks with isolated neutral according to claim 2, characterized in that