| 摘要 |
<p>PURPOSE:To prevent the change of tertiary voltage according to the position of a tap by winding series winding, shunt winding and internally stored winding on the first iron core and winding medium-voltage winding and tertiary winding excited by the winding on the second iron core. CONSTITUTION:The series winding 1, the shunt winding 2 and tap winding 4 are connected in series between a high-tension line terminal U and a neutral terminal V, and the internally stored winding 7 delta-connected when formed as a three-phase bank is connected in parallel with exciting winding 5 exciting the tap winding 4. A medium-voltage line terminal u is drawn from a section between the series winding 1 and the shunt winding 2, the medium-voltage winding 6 is connected between the terminal u and the neutral terminal V, and the tertiary winding 3 is excited by the medium-voltage winding 6. Accordingly, the tertiary voltage can be made constant without depending upon the change of the position of the tap.</p> |
