APPARATUS FOR TESTING TRANSFORMERS AND REACTORS Russian patent published in 2019 - IPC G01R31/06 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering and is used in transformer plants. Invention comprises network transformer (1) connected to converter (2) of three-phase mains voltage into alternating voltage, controlled by frequency and value by voltage inverter, equipped with control unit (9), output transformer (5, 6), output terminals (4) of alternating current. Novelty is switch (3), which central lead is connected to converter (2), first extreme terminal is connected to output transformer (4, 5), and the second one – to DC terminal (7), and the second DC control unit (10) is introduced, outputs of control units are connected to extreme outputs of contact-block (11) of switch (3), which central lead is connected to converter control input. This achieves a new function – obtaining direct current at output, which is required for removal of reactor reactive-reactor characteristics.

EFFECT: broader functional capabilities.

1 cl, 2 dwg