31results about How to "High dynamic and thermal stability" patented technology

A sliding contact used for high-voltage electric appliances comprises a contact finger containing block, slide contact fingers, contact finger partition plates, lubrication guide sleeves and a movable main contact. At least two slide contact fingers are embedded in the sliding contact. Every two adjacent slide contact fingers are separated through the corresponding contact finger partition plate, a hollow sleeve for the movable main contact to penetrate through is formed, the lubrication guide sleeves are arranged at the upper port and the lower port of the sleeve respectively, the movable main contact penetrates through the sliding contact, and the circumferential face of the movable main contact makes contact with the slide contact fingers. The slide contact fingers are small in contact resistance and large in passable carrying capacity; current is transmitted between the sliding contact and the movable main contact only through the slide contact fingers, and therefore the stability of current transmission is greatly improved; limiting is conducted through the elastic attaching of the contact fingers by means of the lubrication guide sleeves, the whole movement structure is reliable and stable, the bad contact caused when the contact fingers deform due to the movement process can not happen, the sliding contact and the movable main contact are kept making contact with the slide contact fingers all the time, and the dynamic thermal stability is high.

The invention discloses a conducting loop structure of a low-voltage circuit breaker. A static contact is connected with a static contact clamping device which comprises three connecting parts: the left part is of a square structure which has a hole and is connected with a busbar; the right part is of a dual-plate clamping structure which is supported to the middle part, and the static contact isarranged between the dual-plate clamping structure in a revolving mode; the middle part of the static contact clamping device is lower than the left part and the right part; a dynamic contact is connected with a dynamic contact clamping device which comprises a left part and a right part, wherein the left part is of a round head dual-plate clamping structure, and the dynamic contact is arranged between the round head dual-plate clamping structure in a revolving mode; and a square structure of the right part is connected with a heating element which forms an integral structure with an outlet terminal of a tripping system. The whole conducting loop does not have soft connection and welding spots, the cost for switching on or off is lowered effectively, the temperature rise is lowered, the dynamic and thermal stability is enhanced, and the electric life and the mechanical life are prolonged.

The invention discloses a high current rotary indoor high-voltage isolating switch which comprises a stainless steel chassis, an aluminum clamp and three phases of conducting units arranged on the stainless steel chassis side by side. Each phase of the conducting units comprises two contact seats, a sleeve pipe with a conductive pipe, and two groups of contact piece groups which are at the upper and lower part of the two sides of the stainless steel chassis, and the contact piece groups are corresponding to two ends of the conductive pipe. The contact seat is square, each group of contact piece group comprises multiple rows of copper fingers, a support seat and multiple pairs of stainless steel support plates, one end of each of the copper fingers in a parallel arrangement is fixed between the contact seat and the support seat, the middle parts of the multiple pairs of stainless steel support plates are fixed at two sides of one end of the contact seat through elastic pressing mechanisms. The contact piece groups of the invention have elasticity and good conductivity, the dynamic thermal stability of the switch is increased according to a groove magnetic lock plate, the reliability is improved, and the working life of a high voltage switch cabinet is prolonged.