| 摘要 |
The drive mechanism of a vacuum interrupter (1) has a two-armed lever (7), supported such that it can pivot, and a spring (11) which engages on the lever and provides the contact force. The two-armed lever (7) is guided in its bearing (oblong hole 9, pivot pin 8) such that it can move in a limited manner in a direction running approximately parallel to the direction of operation of the interrupter (1). On switching on, the two-armed lever (7), with its pivot pin (8), pivots about the end of the pin guide until the switching pieces (3, 5) make contact. Further pivoting of the lever (7) takes place about a hinge arrangement (6) between the two-armed lever (7) and the drive ram (4). The two-armed lever (7) can be formed from two parallel partial levers (20) at such a spacing that the spring (11) can engage between the partial levers. The drive mechanism is suitable for single or multipin vacuum power circuit breakers, for example for use in gas-insulated switching installations. …<IMAGE>… |
