Manufactured piece for a gas-insulated high-voltage circuit breaker tank with particle traps and tank containing such a piece

摘要

A manufactured piece of a tank made by casting or molding for a high-voltage circuit breaker (41, figure 4) comprising: a hollow body 30 with at least one wall 32 extending longitudinally along a main axis to delimit a cavity 33 with two ends, a top and a bottom; at least one opening 38 in the top of the body; and at least one particle trap 9 in the bottom of the body for collecting particles. The particle trap is a groove extending between two set apart points belonging to a plan perpendicular to the main axis. The groove may be radial in the moulded tank. Preferably the particle trap includes a covering shroud (13, figure 13) with a shielding surface for dielectrically shielding an area between the covering shroud and the bottom of the groove. Preferably the tank encloses a high-voltage gas insulated circuit breaker comprising an interrupter chamber.