SWITCHING ARRANGEMENT FOR TAP-CHANGING TRANSFORMER AND METHOD FOR OPERATING SUCH SWITCHING ARRANGEMENT Russian patent published in 2019 - IPC H01F29/04 

FIELD: electrical engineering.

SUBSTANCE: invention relates to a switching arrangement for a tap-changing transformer with an on-load tap changer. Device comprises a main winding with a first main connection terminal, a coarse winding with a first coarse connection terminal and a second coarse connection terminal, a control winding with a first control connection terminal, an on-load tap changer which interacts with the control winding and has a tap changer connection terminal, comprising a discharge line. First contact arrangement which comprises a first main fixed contact which can be connected to the first main connection terminal. First coarse fixed contact which can be connected to the first coarse connection terminal. First control fixed contact which can be connected to the first control connection terminal, a first tap changer fixed contact which can be connected to the tap changer connection terminal. First moving bridge contact which is designed in such a way that, in each stationary operating position of the switching arrangement and/or during each switchover process of the switching arrangement, it electrically bridges or connects at least two fixed contacts of its contact arrangement. Second contact arrangement which comprises a second coarse fixed contact which can be connected to the second coarse connection terminal. Second control fixed contact which can be connected to the first control connection terminal and/or is connected to the first control fixed contact. Second tap changer fixed contact which can be connected to the tap changer connection terminal and/or is connected to the first tap changer fixed contact. Second moving bridge contact which is designed in such a way that it electrically bridges at least two fixed contacts of its contact arrangement in each stationary operating position of the switching arrangement and/or during each switchover process of the switching arrangement. Third contact arrangement which comprises a first discharge fixed contact which is connected to the discharge line. Third coarse fixed contact which can be connected to the first coarse connection terminal and/or is connected to the first coarse fixed contact. Third control fixed contact which can be connected to the first control connection terminal and/or is connected to the first control fixed contact, a third tap changer fixed contact which can be connected to the tap changer connection terminal and/or is connected to the first tap changer fixed contact. Third moving bridge contact which is designed in such a way that, in each stationary operating position of the switching arrangement and/or during each switchover process of the switching arrangement, it electrically bridges at least two fixed contacts of its contact arrangement.

EFFECT: technical result is easier switching of switching arrangement.

11 cl, 4 dwg