| 摘要 |
FIELD: electricity.SUBSTANCE: device contains a rotary aluminium disc with rotation axis with W-shaped electromagnet installed at its one side with a voltage coil connected in parallel to the mains input, and the opposed U-shaped electromagnet installed at the other side with a current coil coupled to the mains phase circuit in series to the load, as well as a register of the electricity meter coupled to the rotation axis. At that at the U-shaped electromagnet there is an additional current winding, both current windings are coupled to input phase conductor at the mains input through two high-voltage high-power diodes related to the phase conductor by different polarities while the other ends of current windings are interconnected thus forming an output phase conductor coupled to the load. Two circuits of parallel electrolytic capacitors and low-voltage diodes suppressing extra currents excited by the transformer in current windings are coupled to both current windings separately. Polarities of these low-voltage diodes, electrolytic capacitors and high-voltage high-power diodes match each other for each of the two phase circuits; and current windings are coupled so that they generate in the U-shaped magnet core a magnetic field with frequency of the mains.EFFECT: provision of protection for induction electricity meters from incorrect registration when high-frequency interruptions of operating current occur in active loads capable of such interruptions.1 dwg |
