Abrégé

The present invention discloses an intelligent circuit breaker capable of automatically releasing and tripping in power failure, with an electromagnetic force capable of controllably changing a current direction arranged between a permanent magnetic field force and a mechanical spring force, and three forces are designed on a straight line, the permanent magnet static iron core, the electromagnetic moving iron core and the electromagnetic coil are respectively fixed on the electromagnetic coil framework through a first shaft hole, a second shaft hole and a wire slot, a tripping energy storage spring is sleeved on the tripping transmission rod, a permanent magnet attraction reset shifting fork is arranged in a shifting groove of the tripping transmission rod, and one end of the tripping transmission rod is provided with a tripping connecting rod.

Classes IPC  ?

• H01H 71/32 - Mécanismes électromagnétiques comportant un organe à magnétisation permanente
• H02J 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p. ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique

Abrégé

An intelligent circuit breaker capable of automatically releasing and tripping in outage, which arranges an electromagnetic force capable of being controlled to change a current direction between a permanent magnetic field force and a mechanical spring force, and designs the electromagnetic force, the permanent magnetic field force and the mechanical spring force on the same straight line. A permanent magnet static iron core (1), an electromagnetic movable iron core (2), and an electromagnetic coil (3) are respectively fixed to an electromagnetic coil framework (4) by means of a first shaft hole (14), a second shaft hole (15), and a wire groove (16); a releasing energy storage spring (7) is fitted over a releasing transmission rod (8); a permanent magnet attraction reset shifting fork (6) is arranged in a shifting groove of the releasing transmission rod (8), and a releasing linkage rod (9) is arranged at one end of the releasing transmission rod (8). According to the circuit breaker, by adding the electromagnetic field force capable of changing the current direction between a mechanical spring releasing force and an attraction force of the permanent magnetic field for preventing releasing, a program implanted into a control circuit can immediately reverse the direction of the current in the electromagnetic coil; a magnetic field of the reversed current and a permanent magnetic field form a repulsive force in the direction consistent with the releasing force of the releasing energy storage spring, and a contradiction between releasing sensitivity and tolerant vibration of a traditional circuit breaker is solved.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/32 - Mécanismes électromagnétiques comportant un organe à magnétisation permanente
• H01H 71/68 - Mécanismes de réarmement à moteur actionnés par un électro-aimant

Abrégé

Disclosed is a circuit breaker having N poles without an arc extinguishing device, comprising an N-pole circuit breaker and an adjacent live line circuit breaker; an N-pole circuit breaker tripping link rod is provided inside the N-pole circuit breaker, and the N-pole circuit breaker tripping link rod and an adjacent live line circuit breaker tripping link rod form a cross plugging structure. The present invention uses the design of trigger of the cross plugging structure formed by the adjacent live line circuit breaker tripping link rod of the adjacent live line circuit breaker and the N-pole circuit breaker tripping link rod of the N-pole circuit breaker, ensuring that the adjacent live line circuit breaker trips first, and after a contact of the adjacent live line circuit breaker is disengaged, immediately before a contact mechanism of the adjacent live line circuit breaker moves to an end point, an N-pole circuit breaker tripping linking action of the N-pole circuit breaker is triggered, ensuring that no arc is generated on the contact of the N-pole circuit breaker, thereby achieving the purpose that the N-pole circuit breaker subsequently opens, and there is no need to replace parts and to redesign the contact mechanism of the N poles.

Classes IPC  ?

• H01H 71/10 - Mécanismes d'actionnement ou de déclenchement
• H01H 71/24 - Mécanismes électromagnétiques

Abrégé

A dual power supply changeover switch with a mechanical tripping interlock function. A main power circuit breaker (2) is isolated from a backup power circuit breaker (5) by a mechanical tripping interlock mechanism (4). When one circuit breaker is connected, a mechanical tripping mechanism of another circuit breaker is triggered to be powered off due to the mechanical logic. When failures of a phase sequence, a default phase, an abnormal voltage and the like appear in a power supply under the power supply condition, electrified switching of the power supply can be achieved by means of mechanical tripping interlocking. By using the mechanical tripping interlocking, the off-off state can be maintained when the on-on state is being avoided; meanwhile, all power supplies are cut off.

Classes IPC  ?

• H01H 71/12 - Mécanismes de déclenchement automatique avec ou sans déclenchement manuel
• H01H 71/50 - Mécanismes à réarmement manuel
• H01H 9/26 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour interverrouillage de plusieurs interrupteurs

Abrégé

A star-delta switching starter for a three-phase alternating-current motor comprises three three-pole air circuit breakers, including a main switch circuit breaker (1), a star circuit breaker (2), and a delta circuit breaker (3). The main switch circuit breaker (1) and the star circuit breaker (2) are connected in series by a six-pole driving shaft (5), a six-pole linkage handle (7) is disposed outside the main switch circuit breaker (1) and the star circuit breaker (2), and no trip interlock mechanism is disposed between the main switch circuit breaker (1) and the star circuit breaker (2). The delta circuit breaker (3) is connected in series by a three-pole driving shaft (8), and a three-pole linkage handle (10) is disposed outside the delta circuit breaker (3). A converter (4) is disposed between the star circuit breaker (2) and the delta circuit breaker (3). One end of the six-pole driving shaft (5) is connected to a main electrically-controlled driver (6), and the other end of the six-pole driving shaft (5) controls the delta circuit breaker (3) to be closed or opened by means of the converter (4). One end of the three-pole driving shaft (8) is connected to an electrically-controlled driver (9), and the other end of the three-pole driving shaft (8) controls the star circuit breaker (2) to be closed or opened by means of the converter (4). The star-delta switching starter of the present invention uses a simple combination of three circuit breakers to implement the start of star-delta switching of a three-phase alternating-current motor, so that the lines are simple, and the installation time, costs, and occupation of an interior space in the equipment can be reduced.

Classes IPC  ?

• H02P 1/32 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur à induction polyphasé par commutation étoile-triangle
• H02H 7/08 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour moteurs dynamo-électriques