FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and is used in transformer plants and comprises converter (2) of three-phase mains voltage into alternating three-phase voltage, frequency-controlled in value, made based on voltage inverter, is equipped with current sensor (7), which output is connected to threshold element (8), which output is connected to converter (2) closing input; output transformer connected by primary winding (3) to output of converter (2), and by secondary winding - to resonant load; tested transformer (5), capacitor (6). At overcurrents through threshold element (8) key 10 is started, shunting circuit of elements (5, 6) and taking current to itself. Also, control pulses of converter (2) are removed. After reduction of current, key (10) is switched off and with delay time delay unit (9) converter (2) comes into operation.
EFFECT: increasing reliability.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TRANSFORMER TESTING FACILITY | 2019 |
|
RU2739702C1 |
| APPARATUS FOR TESTING TRANSFORMERS (VERSIONS) | 2019 |
|
RU2710778C1 |
| CONTROLLED THREE-PHASE REACTOR (OPTIONS) | 2022 |
|
RU2778547C1 |
| TRANSFORMER TESTING FACILITY | 2019 |
|
RU2697856C1 |
| DEVICE FOR TESTING CONTROLLED SHUNTING REACTOR | 2015 |
|
RU2592253C1 |
| REACTOR-TRANSFORMER FOR THYRISTOR COMPENSATOR | 2017 |
|
RU2666551C1 |
| THREE-PHASE MULTIBLOCK FREQUENCY CONVERTER | 2020 |
|
RU2718518C1 |
| SHUNTING REACTOR WITH COMPENSATION-CONTROL WINDING | 2016 |
|
RU2645752C1 |
| FREQUENCY CONVERTER FOR TESTING TRANSFORMERS (OPTIONS) | 2016 |
|
RU2652087C1 |
| 12-PULSE CONVERTER | 2019 |
|
RU2709455C1 |
