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US 2019/0198238 A1Published application
Three-phase transformer
AssigneeU.T.T. Unique Transformer Technologies Ltd
InventorsEliezer ADAR, Yuri BOLOTINSKY
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AssigneeU.T.T. Unique Transformer Technologies Ltd
InventorsEliezer ADAR, Yuri BOLOTINSKY
Estimating the term…
A three-phase transformer, and method of assembling the same, are disclosed. The three-phase transformer comprises three closed-loop magnetic core elements each comprising two pairs of partial primary and secondary coils respectively associated with two different electrical phases of the three-phase transformer. Each pair of partial primary and secondary coils is placed over a same magnetic core section of its closed-loop magnetic core element and its partial primary and secondary coils are respectively electrically connected either in series or in parallel to partial primary and secondary coils of another pair of partial primary and secondary coils associated with the same electrical phase and placed over another one of the closed-loop magnetic core elements. The serially or parallelly electrically connected partial primary coils are electrically coupled for connection to a three-phase electric power supply. The serially or parallely electrically connected secondary coils are electrically coupled for connection to a three-phase load.
A three-phase transformer comprising three closed-loop magnetic core elements each comprising two pairs of partial primary and secondary coils respectively associated with two different electrical phases of the three-phase transformer, each pair of partial primary and secondary coils is placed over a same magnetic core section of its closed-loop magnetic core element and its partial primary and secondary coils are respectively electrically connected either in series or in parallel to partial primary and secondary coils of another pair of partial primary and secondary coils associated with the same electrical phase and placed over another one of the closed-loop magnetic core elements, the serially or parallelly electrically connected partial primary coils are electrically coupled for connection to a three-phase electric power supply, and the serially or parallely electrically connected secondary coils are electrically coupled for connection to a three-phase load.
A method of manufacturing a three-phase transformer, the method comprising preparing three closed-loop magnetic core elements, cutting and removing a section of each magnetic core element, placing two inner coils over two different core sections of each magnetic core element, placing an external coil over each inner coil, attaching to each magnetic core element its respective removed section, electrically connecting each inner and outer coils belonging to the same magnetic core section to respective inner and outer coils belonging to a same magnetic core section of another magnetic core element, electrically coupling between the outer coils for connection thereof to a three-phase power supply, and electrically coupling between the inner coils for connection thereof to a three-phase load.
Dependencies are inferred from the claim text.