Abstract

An insulation device is disclosed. The insulation device is used as an insulator of a fuse cutout, and comprises: a cylindrical insulating body, a plurality of first insulation sheds, an extending cylindrical insulating body horizontally connected to the cylindrical insulating body, and at least one second insulation shed, in which said first insulation shed is a circular fin extending radially outwardly from a side surface of the cylindrical insulating body, and the second insulation shed is also a circular fin extending radially outwardly from a side surface of the extending cylindrical insulating body. Compared to the conventional insulator of the fuse cutout, the insulation device according to the present invention has longer creepage distance because of additionally including the extending cylindrical insulating body and the at least one second insulation shed, so as to exhibit superior electrical performance under sever weather condition.

IPC Classes  ?

• H01H 31/12 - Adaptation for built-in fuse
• H01H 85/20 - Bases for supporting the fuseSeparate parts thereof

Abstract

An upper contact assembly is disclosed, which comprises a metal member, and an electrically conductive (EC) plate provided with an aperture thereon, a sheet metal spring, and a support unit are disposed in the accommodation space. Moreover, the sheet metal spring contacts with a bottom of the EC plate, and a protrusion block of the EC plate is exposed out of the metal member via the aperture. In addition, a hollow cylindrical (HC) conductor is vertically disposed on the top of the metal member, thereby being in contact with the protrusion block. As such, the HC conductor, the protrusion block, the EC plate, and the sheet metal spring are formed with an electrical transmission path therebetween, such that an electric wire is allowed to conduct a high-power electrical transmission through the ET path after being connected to a second end of the HC conductor.

IPC Classes  ?

• H01H 31/12 - Adaptation for built-in fuse

Abstract

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.

IPC Classes  ?

• H01H 9/10 - Adaptation for built-in fuses

Abstract

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.

IPC Classes  ?

• H01H 31/12 - Adaptation for built-in fuse
• H01H 85/38 - Means for extinguishing or suppressing arc

Abstract

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.

IPC Classes  ?

• H01H 31/12 - Adaptation for built-in fuse
• H01H 85/20 - Bases for supporting the fuseSeparate parts thereof
• H01H 85/175 - Casings characterised by the casing shape or form
• H01H 85/30 - Means for indicating condition of fuse structurally associated with the fuse
• H01H 85/38 - Means for extinguishing or suppressing arc
• H01H 85/43 - Means for exhausting or absorbing gases liberated by fusing arc, or for ventilating excess pressure generated by heating
• H01H 85/08 - Fusible members characterised by the shape or form of the fusible member
• H01H 85/02 - Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive Details

Abstract

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.

IPC Classes  ?

• H02G 7/05 - Suspension arrangements or devices for electric cables or lines

Abstract

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.

IPC Classes  ?

• H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection