CN2496128Y

CN2496128Y - Outdoor AC high-voltage drop-off type fuse

Info

Publication number: CN2496128Y
Application number: CN 01233902
Authority: CN
Inventors: 黄汴; 尚永恩
Original assignee: Ningbo Sun Rise Electrical Appliance Manufacturing Co ltd
Current assignee: Ningbo Sun Rise Electrical Appliance Manufacturing Co ltd
Priority date: 2001-08-13
Filing date: 2001-08-13
Publication date: 2002-06-19
Anticipated expiration: 2011-08-13

Abstract

The utility model relates to an outdoor alternating current high voltage drop fuse protector, which comprises a fusion tube, a porcelain insulator and an arcing chamber, etc. An arc knife arranged in the arcing chamber is connected with a torsion spring, a panel turnover mechanism is arranged at the lower part of the fusion tube, fuse wires got through the fusion tube presses the panel turnover mechanism, and the both ends are respectively fixed with an upper movable contactor and a lower movable contactor. The current is speedily cut off when the circuit is overloaded or short, and the fusion tube is speedily pulled out by the fuse wires under the panel turnover mechanism effect, to put out the electric arc speedily, and the fuse protector can break safely the load with maximal 200 amps and 12 kV.

Description

Outdoor ac high voltage drop fuse

The utility model relates to the fuse technical field; it is the part that electric current passes through its fusible material; when this electric current is excessive; owing to the fusing of fusible material makes the protective device of current interruptions, especially relate to fuse in the protective device be held, support or be fixed on can be situated between from the coal that base takes out or accessory on technical field.

At present, domestic little in the fuse disjunction load of using, and fuse molten arc time in interrupting process is long, produces the temperature height, and fusion tube is easily blasted.

The purpose of this utility model is for overcoming the deficiency of prior art, provides that a kind of what have spark blowout and auxiliary contact can the disjunction peak load be the outdoor ac high voltage drop fuse of 200 amperes, 12 kilovolts loads.

The purpose of this utility model is achieved in that a kind of outdoor ac high voltage drop fuse, the fusion tube two ends are fixed by holder up and down respectively, are fixed with moving contact, keeper, torsion spring and arc moving contact cutter on the last holder, time holder is fixed with lower moving contact, support connecting plate, semiaxis and turnover panel; Porcelain vase upper end is fixed with upper junction plate, goes up supporter, and upper static contact is fixed on the upper junction plate, and stage clip is fixed in the supporter, arc-extinguish chamber by conductive plate be connected on the supporter, the arc fixed contact is loaded in the arc-extinguish chamber; The porcelain vase lower end is fixed with lower connecting plate, following supporter, and following fixed contact is fixed on the lower connecting plate, and an end of fuse is fixed on the moving contact, and the other end passes fusion tube, pushes down turnover panel, is fixed on the lower moving contact, and the porcelain vase middle part is fixed with mounting panel.

Its course of action is such, when circuit need cut off when load, can manual mode will to go up holder drop-down, moving contact is broken away from and the contacting of upper static contact, torsion spring separates arc moving contact cutter rapidly because of energy storage with the arc fixed contact at this moment, and electric arc extinguishes in arc-extinguish chamber fast; When circuit overloads or short circuit, fuse because of being subjected to the tension force effect of turnover panel, is pulled out fusion tube fast in fusing process, electric arc is extinguished rapidly.

Owing to adopted technique scheme; the utlity model has when arc extinguishing reaches circuit overloads or short circuit rapidly when cutting off load; arc energy is extinguished rapidly; eliminated the danger of fusion tube blast; improved the arc extinction performance of fuse; making this fuse disjunction peak load safely is 200 amperes, 12 kilovolts load, protects distribution line and distribution transformer effectively.

Below in conjunction with accompanying drawing the utility model is further described.

Shown in accompanying drawing: fusion tube of the present utility model (16) two ends is up and down fixed by holder (14,17) up and down respectively, on last holder (14), be fixed with moving contact (13) and arc moving contact cutter (10) by axle respectively, on the axle of fixing arc moving contact cutter, also be fixed with keeper (15) and torsion spring (12); Respectively by being fixed with lower moving contact (21), supporting connecting plate (18), lower moving contact (12) is connected with following supporter (17) by semiaxis (22) on following holder, the support connecting plate turnover panel (19) of ining succession; Porcelain vase (3) two ends is up and down fixed by anchor ear (2) and last lower connecting plate (4,25) respectively, on upper junction plate (4), be fixed with supporter (5) and upper static contact (6), upper static contact contacts with last moving contact, stage clip (8) also is installed, to increase the contact force between dynamic/static contact between last supporter and upper static contact; Arc-extinguish chamber (11) is fixed with on the supporter by conductive plate (7), and arc fixed contact (9) is housed in arc-extinguish chamber, and it contacts with the arc moving contact; Be fixed with supporter (24) and fixed contact (23) down down on lower connecting plate, following fixed contact contacts with lower moving contact; Fuse (20) passes fusion tube, and upper end and last moving contact fix, and the lower end is fixed on down on the contact after pushing down turnover panel (19), and the porcelain vase middle part is fixed with mounting panel (1).

Claims

1, a kind of outdoor ac high voltage drop fuse, form by parts such as fusion tube, porcelain vase, arc-extinguish chambers, fusion tube is fixed by holder up and down respectively up and down, it is characterized in that: be fixed with moving contact and arc moving contact cutter on the last holder respectively by axle, on the axle of fixing arc moving contact cutter, also be fixed with keeper and torsion spring; Be fixed with lower moving contact, supporting connecting plate by axle respectively on the holder down, lower moving contact also is connected with following supporter by semiaxis, supports connecting plate and is connecting turnover panel; Porcelain vase is fixed by anchor ear and last lower connecting plate respectively at two ends up and down, be fixed with supporter and upper static contact on the upper junction plate, upper static contact contacts with last moving contact, and stage clip also is installed between last supporter and upper static contact, to increase the contact force between dynamic/static contact; Arc-extinguish chamber is fixed on the supporter by conductive plate, and the arc fixed contact is housed in arc-extinguish chamber, and it contacts with the arc moving contact; Be fixed with supporter and fixed contact down down on lower connecting plate, following fixed contact contacts with lower moving contact; Fuse passes fusion tube, and upper end and last moving contact fix, and the lower end is fixed on the lower moving contact after pushing down turnover panel; The porcelain vase middle part is fixed with mounting panel.