| 摘要 |
995,119. Regulating switches. E. SCHEUBECK, [trading as MASCHINENRFABRIK REINHAUSEN GEB. SCHEUBECK KOMM.- GES.]. Dec. 9, 1963 [Feb. 9, 1963], No. 48466/63. Heading H2B. An on-load transformer tap changer has for each phase two pairs of fixed main contacts 2, 3 and two pairs of fixed auxiliary contacts 4, 5, of which one pair at a time is bridged by a moving main or auxiliary contact bridge 9, 10, or 11, 12, each controllable independently by a guiding cam slot 16 and a linkage 21. The drive of the formoving contact bridges is effected from the actuating shaft 1 via a driving disc 19 springs 20 and linkage 21, each linkage 21 comprising levers 22 and 23 connected to a pivot member 24 movable in a guiding cam slot 16. Levers 22 are also pivotably connected to the moving contact linkages 9, 10 or 11, 12, movable in guide slots 13, and levers 23 are connected to a transverse rail 25, movable. radially on guide rails 27 of projections 26 of the driving disc 19 and connected to the disc hub by the springs 20. When shaft 1 is actuated by motor, or manually via a spring energy accumulator, movement in a counter-clockwise direction of driving disc 19 causes positive changeover from main contact 9 to main contact 10 via auxiliary contacts 11, 12, which are made and broken in turn according to the guiding cam slots 16. |
