| 摘要 |
<p>An onload tap-changing transformer comprises a high voltage winding (2) a low voltage winding (1) wound on an iron core (C) a coarse tap winding (3) wound on the iron core and connected in series with the high voltage winding, and a fine tap winding (4) wound on the iron core and selectively connectable to the high voltage winding or the low voltage winding by a switch (S). The conductors making up the coarse tap winding and the conductors making up the fine tap winding are wound together, in juxtaposed relation with each other, into at least one integrated disc winding assembly and taps are led out of predetermined points of the fine tap winding, thereby inceasing the capacitance between the coarse tap winding and the fine tap winding so that the transfer voltage generated upon application of a lightning impulse and the potential difference between the windings are reduced, thus preventing any corona or dielectric breakdown.</p> |
