39results about How to "Increase creep distance" patented technology

The invention discloses a multi-step porcelain tube and a multi-layer gas discharge tube. Steps of the multi-step porcelain tube are provided with first discharge electrodes and second discharge electrodes; insulation porcelain sheets are arranged between the first discharge electrodes and the second discharge electrodes; and cavities formed by the first discharge electrodes, the second discharge electrodes and the insulation porcelain sheets are filled with inert gases. According to the multi-step porcelain tube and the gas discharge tube prepared by utilizing the multi-step porcelain tube, because the porcelain tube in which a plurality of step structures are designed is adopted, creep distances among clearances are increased effectively, and edge discharge among the clearances is prevented to guarantee that three individual discharge clearances are formed in a single-layer discharge tube, so that arc light voltage is doubled; the arc light voltage at a single layer achieves 65V; and the follow current capability is intensified greatly.

The invention relates to a three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet which comprises a box body, an internal disconnecting switch, a vacuum circuit breaker, an earthing switch, a left cable incoming and outgoing end, a right cable incoming and outgoing end and an operating mechanism, wherein the disconnecting switch, the earthing switch and an insulating base are arranged on a skeleton of the box body; the insulating base comprises a T-shaped conducting rod; the upper end of the T-shaped conducting rod is used as a fixed contact of the disconnecting switch; the lower end of the T-shaped conducting rod is used as a fixed contact of the earthing switch; the right cable incoming and outgoing end is fixedly sealed at the right side of the lower end of the vacuum circuit breaker; the left end of the T-shaped conducting rod is used as the left cable incoming and outgoing end; the vacuum circuit breaker is connected with a spring stored energy operating mechanism; and the disconnecting switch and the earthing switch are respectively connected with a closed type manual operating mechanism. The three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet has the advantages: live parts of all switching elements are encapsulated by adopting solid insulation materials; and the live parts are not exposed and are safer to use. Compared with similar products with voltage glass of 40.5kV and below, the switching cabinet has the advantages that the volume is reduced by 50-80%, the weight is reduced by 30-60% and raw materials are saved by more than 20-30%.