CN2318705Y - Vacuum load switch-fuse combined electrical equipment - Google Patents
Vacuum load switch-fuse combined electrical equipment Download PDFInfo
- Publication number
- CN2318705Y CN2318705Y CN 97227361 CN97227361U CN2318705Y CN 2318705 Y CN2318705 Y CN 2318705Y CN 97227361 CN97227361 CN 97227361 CN 97227361 U CN97227361 U CN 97227361U CN 2318705 Y CN2318705 Y CN 2318705Y
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- CN
- China
- Prior art keywords
- fuse
- load switch
- utility
- model
- striker
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- 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 - Lifetime
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model relates to a high voltage switch device for electric transmission and electric distribution. The utility model discloses a vacuum load switch-fuse combined electrical apparatus which comprises a vacuum load switch, a fuse provided with a striker and a tripping mechanism. The utility model is characterized in that the fuse of the vacuum load switch-fuse combined electrical apparatus is horizontally arranged above a vacuum arc extinguishing chamber; the end provided with the striker on the fuse faces to the tripping mechanism triggered by the striker. The structure of the whole combined electrical apparatus is compact, and the volume is small. The utility model is especially suitable for a switch device of a double-layer cabinet. The utility model is used for undertaking an on-off task between operating current and short circuit current.
Description
The utility model relates to high pressure power transmission and distribution switchgear, especially by on-load switch, tripping mechanism, have the combined electrical apparatus that the fuse of striker is formed.
In China's city net was built and transformed, along with high pressure enters increasing of urban district and ring network power supply, ring network power supply unit and box-type substation arose at the historic moment.Therefore fault (as the short circuit) protection to transformer in ring network power supply unit and the box-type substation also becomes the task of top priority.In order to bear cut-offfing task and can protect electric equipment effectively between operating current and the short circuit current, usually utilize therefore that fuse can excise fault characteristic in the switch-fuse combination in 10ms, protect electric equipment effectively.
Yet existing switch-fuse combination exists following weak point:
Fuse is vertically mounted on the top or the bottom of on-load switch, and when the electric current that breaks down in the circuit (as short circuit), the striker by fuse inside triggers tripping mechanism, drives operating mechanism, and vacuum interrupter is disconnected.Because fuse is arranged vertically, and makes whole combined electrical apparatus volume big, complex structure.
The purpose of this utility model is the defective that exists at above-mentioned switchgear, provides that volume is little, the vacuum load switch-fuse combined electric apparatus of compact conformation.
The utility model is realized by the following technical solutions: the fuse horizontal arrangement of vacuum load switch-fuse combined electric apparatus is directly over vacuum interrupter, and fuse has one of striker and rectifies the tripping mechanism that triggers facing to for striker.
Advantage of the present utility model is: it greatly reduces than general combined electrical apparatus volume, and more compact structure is specially adapted to the switchgear of double-deck cabinet.
Accompanying drawing is a structural representation of the present utility model.
Among the figure: outlet arm on 1,2 fuses, 3 conducting rods, 4 connecting levers, 5 supports, 6 pull bars, 7 release levers, 8 operating mechanisms, 9 fulcrums, 10 output toggle arms, 11 insulating bars, 12 times outlet arms, 13 are flexible coupling, 14 vacuum interrupters, 15 insulation framework.
Below in conjunction with embodiment concrete structure of the present utility model, operating principle are described further.
In the utility model vacuum load switch-fuse combined electric apparatus, fuse (2) horizontal arrangement is directly over the vacuum interrupter (14) on the insulation framework (15), fuse (2) has one of striker and rectifies the tripping mechanism that triggers facing to for striker, and tripping mechanism is made up of connecting lever (4), support (5), pull bar (6) and release lever (7).
When operate as normal, combined electrical apparatus is partly carried normally by last outlet arm (1), fuse (2), conducting rod (3), vacuum interrupter (14), the line that is flexible coupling (13) and (12) electric loops of following outlet arm successively; When need normal occlusion separating brake, operating mechanism (8) action by on-load switch moves up and down output toggle arm (10), drives vacuum interrupter (14) moving contact and moves up and down, and realizes combined electrical apparatus is carried out the on/off switch of normal range (NR).
When electric loop one breaks down electric current (as short circuit); the melt of fuse (2) is action rapidly in several milliseconds; the inner striker of fuse (2) is got; the connecting lever (4) of tripping mechanism is clockwise rotated; driving pull bar (6) and release lever (7) moves upward; make operating mechanism (8) separating brake; its output toggle arm (10) clockwise rotates around fulcrum (9); driving insulating bar (11) moves downward; vacuum interrupter (14) moved end is moved downward realize separating brake and the disengagement failure electric current, the protection electric equipment.
Claims (1)
1. vacuum load switch-fuse combined electric apparatus, comprise vacuum load switch, have fuse, the tripping mechanism of striker, it is characterized in that the fuse horizontal arrangement directly over vacuum interrupter, fuse has one of striker and rectifies the tripping mechanism that triggers facing to for striker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227361 CN2318705Y (en) | 1997-09-27 | 1997-09-27 | Vacuum load switch-fuse combined electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227361 CN2318705Y (en) | 1997-09-27 | 1997-09-27 | Vacuum load switch-fuse combined electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318705Y true CN2318705Y (en) | 1999-05-12 |
Family
ID=33940798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97227361 Expired - Lifetime CN2318705Y (en) | 1997-09-27 | 1997-09-27 | Vacuum load switch-fuse combined electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318705Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244795A (en) * | 2015-10-09 | 2016-01-13 | 维龙（镇江）电工研究院有限公司 | Single-phase module for load switch-fuse combination unit |
-
1997
- 1997-09-27 CN CN 97227361 patent/CN2318705Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244795A (en) * | 2015-10-09 | 2016-01-13 | 维龙（镇江）电工研究院有限公司 | Single-phase module for load switch-fuse combination unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |