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

The invention relates to an epoxy-pouring full-insulation solid isolating switch, which comprises an isolation body, a grounded contact, an isolation contact, a middle contact, an isolation moving contact, a driving screw rod, a fixed nut and a driving gear part, wherein the grounded contact and the isolation contact are arranged at two ends of the isolation body respectively, the middle part of the isolation body is provided with the middle contact, the upper end of the isolation contact is connected with a bus contact through a bus-bar, the bus contact is arranged on the top of the isolation body, and the isolation moving contact is always contacted with the middle contact through a watch chain sensing finger. The isolation switch slides between two positions of the middle contact and the isolation contact or the middle contact and the grounded contact to form the conduction or the isolation grounding of the isolating switch. The entire isolating switch is poured into a fully-sealed integral structure with epoxy resin. The epoxy-pouring full-insulation solid isolating switch provided by the invention has the advantages of full insulation, insulation structure, small volume, extensibility, easy installation, free maintenance, long life, stable and reliable performance, and the like.

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 present invention provides an epoxy pouring solid insulation switch with double-isolation which comprises three same switch bodies arranged in a housing, the switch body comprises a vacuum explosion chamber and two same upper and lower isolation switches; the upper isolation switch, the vacuum explosion-chamber cabin and the down isolation switch are fixedly connected each other, the upper isolation switch locates above the vacuum explosion chamber cabin, the lower isolation switch locates below the vacuum explosion chamber cabin, the lower isolation switch has a same horizontal installing direction and an opposite vertical installing direction with the upper isolation switch. The switch provided by the invention has advantages of reasonable design, higher electric safety performance,little volume, light weight, stable performance, reliable motion, stronger practicability and advancement. The switch provides assurance for reliability of electric supply, which is a precondition condition for reducing user investment.

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 provides intelligent adjusting device and method for a power grid. The device comprises a transformer tapping winding, two coarse tapping selectors respectively connected with each tapping joint of the transformer tapping winding, fine tapping selectors connected with winding joints of the coarse tapping selectors, and a selector switch for switching to select the coarse tapping selectors or the fine tapping selectors; two contactors of the first coarse tapping selector is connected with one of the contactors of the second tapping selector; one winding contactor of the fine tapping selector is connected with an adjusting tapping joint Q of the second elector; two contactors of the selector switch are respectively connected an regulating tapping joint K of the first tapping selector and one contactor of the fine tapping selector and used for performing coarse and fine adjusting of a transformer by switching the fine tapping contactors and the two coarse tapping selectors.

The invention relates to component of low-voltage switchgear assembly, in particular to a pluggable secondary control system component. The pluggable secondary control system component comprises a control loop element (16), a spile (19), a control loop master switch QF1 (17), a pluggable terminal (18); wherein the control loop master switch QF1 (17), the pluggable terminal (18) and the control loop element (16) are arranged on the spile (19), the control loop master switch QF1 (17) is connected with the pluggable terminal (18), and the control loop element (16) is connected with the pluggableterminal (18). The invention can ensure a user to timely, safely and conveniently replace when the control system is damaged or needs functional upgrading without influencing power supply.

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.

The invention discloses a combination type high voltage current voltage transformer, comprising a current main body and a voltage main body as an integer, wherein the current main body is the current transformer provided with a primary current input end and a primary current output end. The main insulation of the current transformer is the capacitance type structure. The voltage main body includes a middle transformer, the primary voltage of which is educed from the middle capacitance tap of the current transformer to make the voltage main body constitute the capacitance type voltage transformer. The secondary current of the current transformer and the secondary voltage of the voltage transformer are respectively educed. The invention realizes that one device completes the two functions of the current transformer and the voltage transformer, meanwhile saves the capacitance voltage divider and the couple capacitor of the capacitance type voltage transformer, which reduces the manufacture cost. The invention has small occupation area, convenient installation and use, low cost, which is used in the high voltage system with marked advantage and the cost is reduced to 50%.