CN2177289Y - High voltage fall-down type protective switch - Google Patents
High voltage fall-down type protective switch Download PDFInfo
- Publication number
- CN2177289Y CN2177289Y CN 93231517 CN93231517U CN2177289Y CN 2177289 Y CN2177289 Y CN 2177289Y CN 93231517 CN93231517 CN 93231517 CN 93231517 U CN93231517 U CN 93231517U CN 2177289 Y CN2177289 Y CN 2177289Y
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- CN
- China
- Prior art keywords
- insulator
- contact
- fuse
- disconnecting link
- moving contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a high voltage falling type protective switch with characteristics of an isolating switch and a fuse. The main member of the utility model comprises a base, a crank arm, a support insulator, a fixed contact, and a knife switch. An insulating rod is arranged in the middle part of the knife switch. The top end of an operation insulator is connected to the insulating rod. A falling protective device which is composed of a falling mechanism, a fuse tube and a locking mechanism is connected to electric conduction connecting bodies on both ends of the knife switch through an electric conduction connecting plate. The utility model is suitable for the small-size electric substations with 35KV, outdoor framework structure voltage transformers with 10KV, electrical distribution branched lines with 10KV, and electrical distribution devices below the transformers with 315KV A.
Description
The utility model relates to high voltage switchgear, especially a kind of high-voltage drop type protection switch.
In the prior art, in 35KV miniaturization, the outdoor type transformer station, the coordinative composition of equipments plan of establishment at interval of 10KV frame structure voltage transformer mainly contains two kinds: one, only adopt fuse switch; Two, adopt isolating switch and fuse to be used.Voltage transformer first and second loop voltage can not be divided, be closed to first kind of scheme synchronously; Mode for 10KV sectionalized single busbar connection, two voltage transformer paired runnings, when a voltage transformer operation, another voltage transformer will have feedback voltage to exist, and when operation, can not satisfy the three-phase synchronism, the open delta winding two ends of voltage transformer will produce residual voltage, thereby make the insulation monitoring system misoperation.Second kind of scheme because the spacer structure space is limit, must improve the level of isolating switch, makes the operator link lengthening, thereby causes connecting rod and isolating switch vibration, increased operation easier.
The purpose of this utility model is to overcome the defective that exists in the above-mentioned prior art, and a kind of high-voltage drop type protection switch with isolating switch and fuse switch characteristics is provided.
The purpose of this utility model adopts following scheme to realize: main member has base; connecting lever; supporting insulator; the operation insulator; fixed contact and disconnecting link; supporting insulator is installed with on base; connecting lever connects with operation insulator bottom by rotating shaft; fixed contact is placed on the supporting insulator; disconnecting link is connected in the rotating shaft on another supporting insulator and can rotates around it; the disconnecting link mid portion is one section insulating bar; operation insulator top is connected on the insulating bar; by falling mechanism; cartridge fuse; the fall protection device that locking mechanism constitutes by the conduction yoke plate be connected in the conduction at disconnecting link two ends conjuncted on, this falling mechanism; cartridge fuse; locking mechanism is prior art.
In addition, on fixed contact, be provided with the arc extinguishing bar, also be provided with the arc extinguishing bar on the conduction of disconnecting link and fixed contact contact jaw is conjuncted.
The utility model is safe and reliable, and disengagement failure is rapid and tour is directly perceived, and flexible operation is easy to maintenance.
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
With reference to accompanying drawing, the utility model main member has base (2), connecting lever (3), supporting insulator (1), operation insulator (5), fixed contact (15) and disconnecting link (6), supporting insulator (1) is installed with on base (2), connecting lever (3) connects with operation insulator (5) bottom by rotating shaft (4), fixed contact (15) is placed on the supporting insulator (1), disconnecting link (6) is connected in the rotating shaft on another supporting insulator (1), and can rotate around it, and disconnecting link (6) mid portion is the insulating bar (10) of one section epoxide resin material, two ends are that the conduction of red copper material is conjuncted, operation insulator (5) top adopts screw on insulating bar (10), and fixed contact (15) is provided with arc extinguishing bar (13), the conjuncted arc extinguishing bar (14) that is provided with of conduction of disconnecting link (6) and fixed contact (15) contact jaw.The fall protection device is by falling mechanism (7); cartridge fuse (9); locking mechanism (12) constitutes; wherein the member of falling mechanism (7) has supporting base; following elastic contact blade; fuse wiring lower end and lower moving contact; following elastic contact blade and fuse wiring lower end all are placed on the supporting base with screw; lower moving contact can rotate in the rotating shaft on supporting base; following elastic contact blade is pressed on the lower moving contact by elastic force; the member of locking mechanism (12) has the cover of dropout; fuse wiring upper end; last moving contact; cartridge fuse chuck and last elastic contact blade; the cover of threading off is fixedly installed on the elastic contact blade top with bearing pin; last moving contact can rotate around the rotating shaft on the cartridge fuse chuck; fuse wiring upper end is screwed on last moving contact; last moving contact snaps in the elastic contact blade by the elastic force of last elastic contact blade; conduction yoke plate (11); conduction yoke plate (8) be fixed by bolts to respectively the conduction at disconnecting link (6) two ends conjuncted on; last elastic contact blade on the locking mechanism (12); supporting base on the falling mechanism (7); all adopt bolt to realize respectively and conduct electricity yoke plate (11) and conduction the connecting of yoke plate (8); cartridge fuse (9) is located between cartridge fuse chuck and the lower moving contact, and fuse is fixed on fuse wiring upper end and the fuse wiring lower end.
The utility model is mainly used in the small-sized transformer station of 35KV, on the outdoor frame structure voltage transformer of 10KV, on the power distribution equipment below 10KV sub power distribution branch line and the 315KVA transformer.When the fuse electric current surpassed rating number, fuse fused immediately, and cartridge fuse (9) falls automatically by deadweight; When the equipment of control protection need overhaul or stop transport, but direct control disconnecting link (6) deenergization carries out work.
Claims (4)
1; a kind of high-voltage drop type protection switch; include base (2); connecting lever (3); supporting insulator (1); operation insulator (5); fixed contact (15) and disconnecting link (6); supporting insulator (1) is installed with on base (2); connecting lever (3) connects by the bottom of rotating shaft (4) with operation insulator (5); fixed contact (15) is placed on the supporting insulator (1), and disconnecting link (6) is connected in the rotating shaft on another supporting insulator (1), and can rotate around it; it is characterized in that disconnecting link (6) mid portion is one section insulating bar (10); operation insulator (5) top is connected on the insulating bar (10), by falling mechanism (7), and cartridge fuse (9); the fall protection device that locking mechanism (12) constitutes is by conduction yoke plate (11), conduction yoke plate (8) be connected in respectively the conduction at disconnecting link (6) two ends conjuncted on.
2, high-voltage drop type protection switch according to claim 1; it is characterized in that falling mechanism (7) is by supporting base; following elastic contact blade; fuse wiring lower end; lower moving contact constitutes; following elastic contact blade and fuse wiring lower end are arranged on the supporting base, and lower moving contact can rotate in the rotating shaft on supporting base, and following elastic contact blade is pressed on the lower moving contact by elastic force.
3, high-voltage drop type protection switch according to claim 1; it is characterized in that locking mechanism (12) is by the cover of threading off; fuse wiring upper end; last elastic contact blade, last moving contact, the cartridge fuse chuck constitutes; the cover of threading off is fixedly installed on the elastic contact blade top; last moving contact can rotate around the rotating shaft of cartridge fuse chuck, and fuse wiring upper end is arranged on the moving contact, and last moving contact snaps in the elastic contact blade by the elastic force of last elastic contact blade.
4,, it is characterized in that fixed contact (15) is provided with arc extinguishing bar (13), the conjuncted arc extinguishing bar (14) that is provided with of conduction of disconnecting link (6) and fixed contact (15) contact jaw according to claim 1,2 or 3 described high-voltage drop type protection switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231517 CN2177289Y (en) | 1993-07-31 | 1993-07-31 | High voltage fall-down type protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93231517 CN2177289Y (en) | 1993-07-31 | 1993-07-31 | High voltage fall-down type protective switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2177289Y true CN2177289Y (en) | 1994-09-14 |
Family
ID=33807958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93231517 Expired - Fee Related CN2177289Y (en) | 1993-07-31 | 1993-07-31 | High voltage fall-down type protective switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2177289Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885471B (en) * | 2005-06-24 | 2010-04-28 | 王兴伟 | Drop type sectionalizer with automatically resetable on-post mechanism |
| CN103280381A (en) * | 2013-06-09 | 2013-09-04 | 马玉斌 | Outdoor alternating-current high-voltage falling type sectionalizer with permanent magnetic mechanism arranged inside main conductive body |
-
1993
- 1993-07-31 CN CN 93231517 patent/CN2177289Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885471B (en) * | 2005-06-24 | 2010-04-28 | 王兴伟 | Drop type sectionalizer with automatically resetable on-post mechanism |
| CN103280381A (en) * | 2013-06-09 | 2013-09-04 | 马玉斌 | Outdoor alternating-current high-voltage falling type sectionalizer with permanent magnetic mechanism arranged inside main conductive body |
| CN103280381B (en) * | 2013-06-09 | 2015-07-29 | 马玉斌 | Permanent magnet mechanism is placed in the outdoor AC high-voltage fall type subsector of main electric conductor inside |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |