| 摘要 |
<p>A vertical tap changer of the type that comprises a cylinder with a rotatable shaft. The vertically arranged cylinder (2) is insulated and provided with contact elements (12), a the switching shaft (3) extends in the axial direction of the cylinder, and a contact carrying structure (4) attached to the shaft, and rotating with the shaft to effectuate tap changes upon rotation of the shaft inside the cylinder (2). The tap changer comprises vacuum interrupters (5) arranged vertically on the contact carrier structure (4) and the vacuum interrupters is operated by activating levers (6) following a cam ring (7) arranged on the inner surface of the cylinder (2). The tap changer also includes a reference guide (8) carried by the contact carrier structure (4), which reference guide (8) upon rotation of the shaft, follows the cam ring (7), the activating lever (6) is connected to the guide and thereby the reference guide (8) keeps the actuating lever in position in relation to the cam ring. The arrangement is characterised in that the reference guide (8) is pivotally (11) arranged in relation to the shaft (2), and the vacuum interrupter is fixedly secured to the shaft.</p> |
