Hydraulic operating device for high-voltage power switches

摘要

In order to achieve synchronism of a plurality of hydraulic drives (4) during the switching-on process, restricted shunt paths (13, 16), which are connected in parallel with the hydraulic line (11), are provided in the region of the large-area piston side (5a) for the hydraulic drive cylinders (6) which each have a differential piston (5). The restriction point in the shunt path (13) is formed by a screw (14) which defines the restriction cross-section non-variably and is arranged replaceably in the shunt path (13). <IMAGE>