Abrégé

A protection structure is disclosed and is applied in a fuse link switch. The fuse link switch comprises: an insulator, a fuse tube including an upper connection portion and a lower connection portion, an upper-end fixing unit, a lower-end fixing unit, and a toggle mechanism, wherein the upper connection portion is connected with a pull hook. The protection structure comprises at least one electrically insulating shielding layer covering at least one of the upper-end fixing unit, the pull hook, the upper connection portion, the lower connection portion, the lower-end fixing unit, and the toggle mechanism through overmolding technique.

Classes IPC  ?

• H01H 9/10 - Adaptation pour coupe-circuit incorporé

Abrégé

An insulation device is disclosed. The insulation device is allowed to be assembled with a fuse tube device so as to form a load break fuse cutout fully closed. The insulation device comprises: a full-closed cylindrical insulator oriented vertically, a first cylindrical insulator oriented horizontally, a second cylindrical insulator oriented horizontally, a third cylindrical insulator oriented horizontally, a first electrical connection unit accommodated in the first cylindrical insulator, a second electrical connection unit accommodated in the second cylindrical insulator, a first arc extinguishing unit accommodated in the first cylindrical insulator, a second arc extinguishing unit accommodated in the second cylindrical insulator, and a mounting bracket connected to the full-closed cylindrical insulator. The full-closed cylindrical insulator, the first cylindrical insulator, the second cylindrical insulator, and the third cylindrical insulator are made integratedly so as to form a main insulation body of the insulation device.

Classes IPC  ?

• H01H 31/12 - Adaptation pour coupe-circuit incorporé
• H01H 85/38 - Moyens pour éteindre ou supprimer l'arc

Abrégé

A fuse tube device is disclosed. The fuse tube device is allowed to be assembled with an insulation device so as to form a load break fuse cutout fully closed. The fuse tube comprises: an insulation housing, an accommodation tube, a first electrical connection unit, a second electrical connection unit, a conductive rod, a fuse element, a first conductive plate, a first cover, a second conductive plate, and a second cover. When assembling the fuse tube device with the insulation device, a first embedding member and a second embedding member of the insulation housing are embedded into a first terminal connecting opening and a second terminal connecting opening of the insulation device, such that the first electrical connection unit and the second electrical connection unit contact a first terminal connecting member and a second terminal connecting member of the insulation device, respectively.

Classes IPC  ?

• H01H 31/12 - Adaptation pour coupe-circuit incorporé
• H01H 85/20 - Socles pour supporter le fusibleLeurs pièces détachées
• H01H 85/175 - Enveloppes caractérisées par leur configuration ou leur forme
• H01H 85/30 - Moyens pour indiquer l'état du fusible structurellement associés au fusible
• H01H 85/38 - Moyens pour éteindre ou supprimer l'arc
• H01H 85/43 - Moyens pour laisser échapper ou absorber les gaz libérés par l'arc de fusion ou pour libérer l'excès de pression causé par l'échauffement
• H01H 85/08 - Éléments fusibles caractérisés par la configuration ou la forme de l'élément fusible
• H01H 85/02 - Dispositifs de protection dans lesquels le courant circule à travers un organe en matière fusible et est interrompu par déplacement de la matière fusible lorsqu'il devient excessif Détails

Abrégé

A clamp-type line post insulator is disclosed. The clamp-type line insulator is provided with a thread clamping device, and comprises: a body, a cable clamp, an insulation unit and an adjustable fixing unit. In the present invention, the body comprises: a receiving recess, a fixing base and a cable groove. Moreover, a pivoting end of the cable clamp pivotally connected to a pivot member that is formed on the fixing base. Particularly, after placing an electrical cable in the cable groove, the cable clamp is rotated by taking the pivot member as an axle center, thereby inserting an engaging end of the cable clamp into the engagement groove to engage with it. By such arrangements, the electrical cable be pressed and fixed in the cable groove by rotating the adjustable fixing unit.

Classes IPC  ?

• H02G 7/05 - Dispositifs ou dispositions pour suspendre les lignes ou câbles électriques

Abrégé

An electronic switch structure capable of extinguishing arcs is provided. A device capable of extinguishing arcs generated when an electric switch is turned on or off is in a following structure. Two silicon controlled rectifiers are connected in inverse parallel. Trigger ports of the silicon controlled rectifiers are connected to triggering current limiting circuits each formed by a diode and a resistor connected in series, respectively. Positive poles and negative poles of the silicon controlled rectifiers are connected to a voltage dependent resistor and a resistance-capacitance absorption circuit for over voltage protection in parallel. A triggering end of the device is connected to a contact bridge of the switch. Two ends connected in inverse parallel of the silicon controlled rectifiers are connected to two ends of fixed contacts of the switch respectively. Thus, an electronic arc extinguishing device having a simple structure, a small volume, and high reliability is formed.

Classes IPC  ?

• H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion