| 摘要 |
The invention relates to a cell of a switchgear and control gear. The cell comprises a vacuum breaker and a three-position selection mechanism providing working, disconnecting or grounding position. The three-position selection mechanism comprises a transverse member capable of vertical movement, socket contacts fixed on the said transverse member, and a lever which connects the transverse member with protection screen. According to the first embodiments, socket contacts are straight up directed and connected by flexible conductors to upper terminal of the vacuum switch, applicable parts of socket contacts are positioned inside bus-bar bushing. According to a second embodiments, socket contacts are straight down directed and connected by flexible conductors to lower terminals of the vacuum switch, applicable parts of socket contacts are connected to upper terminals of a current transformer. The technical result of the invention is construction simplification, reliability and safety growth. |
