CN102683121B - Grounding switch of circuit breaker - Google Patents
Grounding switch of circuit breaker Download PDFInfo
- Publication number
- CN102683121B CN102683121B CN201210058899.3A CN201210058899A CN102683121B CN 102683121 B CN102683121 B CN 102683121B CN 201210058899 A CN201210058899 A CN 201210058899A CN 102683121 B CN102683121 B CN 102683121B
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- CN
- China
- Prior art keywords
- mentioned
- movable plate
- fixed contact
- circuit breaker
- grounding switch
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
- H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/015—Boards, panels, desks; Parts thereof or accessories therefor
- H02B1/04—Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
- H02B1/056—Mounting on plugboards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention provides a grounding switch of a circuit breaker. According to one aspect, in the embodiment of the invention, the grounding switch of the circuit breaker for grounding the circuit during the test process of the circuit breaker comprises a fixation contact portion fixed on one surface of the circuit breaker and composed of a fixation contact; and a movable contact portion comprising first, second movable plates selectively contacted with the fixation contact, wherein one surfaces of the first, second movable plates are opposite and parallel to each other, the fixation contact portion is respectively contacted with opposite surfaces of the first, second movable plates. According to the embodiment of the invention, when the circuit breaker is on the test position, short circuit or grounding accident is prevented from occurring, and the operation reliability and safety of the products are improved.
Description
Technical field
The present invention relates to circuit breaker.
Background technology
Generally speaking, the high-tension electricity sent from power station is transformed to low pressure feed to each electricity consumption place such as mansion or factory through transformer.In above-mentioned transmission process, if in power station, transformer, distribution panelboard etc. overload or short circuit etc. occur and produces abnormal current, then will cause security incident.Therefore, circuit breaker is used in order to block abnormal current.
Above-mentioned circuit breaker is arranged at above-mentioned transformer or distribution panelboard etc.In addition, above-mentioned circuit breaker is connected to the terminal of above-mentioned transformer or distribution panelboard etc. with On current, or separates from the terminal of above-mentioned transformer or distribution panelboard etc. the flowing blocking electric current.Usually, above-mentioned circuit breaker is connected with the terminal of above-mentioned transformer or distribution panelboard etc. and is referred to as " run location " with the position of On current.
In addition, in order to check whether above-mentioned circuit breaker occurs exception, the terminal of above-mentioned circuit breaker from above-mentioned transformer or distribution panelboard etc. can be separated.And such position is referred to as " test position " of above-mentioned circuit breaker.If above-mentioned circuit breaker is positioned at test position, then earthed switch is placed in circuit breaker rear, with preventing short circuit or ground fault.
Above-mentioned earthed switch only works when above-mentioned circuit breaker is positioned at test position.In addition, if above-mentioned circuit breaker moves to test position from run location, then the fixed contact of above-mentioned earthed switch and current collector contact, to prevent short circuit and ground fault.
But in the circuit interrupter grounding switch of prior art, because of reasons such as operation errors, above-mentioned fixed contact and current collector are not likely positioned at designed position accurately.In addition, if above-mentioned fixed contact and current collector have be not positioned at designed position accurately, then because above-mentioned fixed contact and current collector can not accurately contact, likely can not the ground connection of realizing circuit.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art and a kind of circuit interrupter grounding switch that current collector and fixed contact are accurately contacted is provided.
According to an aspect of the present invention, in the embodiment of circuit interrupter grounding switch, a kind ofly to comprise: fixed contact for making the circuit interrupter grounding switch of circuit ground in circuit breaker test process, being fixed on the one side of above-mentioned circuit breaker and comprising fixed contact; And moving contact portion, comprise first and second movable plate optionally contacted with above-mentioned fixed contact; And the one side of first and second movable plate above-mentioned is opposing parallel and establish, above-mentioned fixed contact respectively contacts with the relative one side of first and second movable plate above-mentioned.
In the embodiment of circuit interrupter grounding switch of the present invention, fixed contact and current collector can accurately contact.Therefore, according to embodiments of the invention, the generation of short circuit or ground fault can be prevented when circuit breaker is positioned at test position, improve operational reliability and the fail safe of product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the circuit breaker of the embodiment applying circuit interrupter grounding switch of the present invention is positioned at running status;
Fig. 2 is that the circuit breaker of the application embodiment of the present invention is positioned at the front elevation of running status;
Fig. 3 is the schematic diagram of the fixed contact forming the embodiment of the present invention;
Fig. 4 is the schematic diagram of the bonded block forming the embodiment of the present invention;
Fig. 5 is the schematic diagram that the circuit breaker of the embodiment applying circuit interrupter grounding switch of the present invention is positioned at test mode.
Embodiment
Below, by reference to the accompanying drawings the first embodiment of the shutter device of vacuum circuit-breaker of the present invention is described in detail.
Fig. 1 is the schematic diagram that the circuit breaker of the embodiment applying circuit interrupter grounding switch of the present invention is positioned at running status; Fig. 2 is that the circuit breaker of the application embodiment of the present invention is positioned at the front elevation of running status; Fig. 3 is the schematic diagram of the fixed contact forming the embodiment of the present invention; Fig. 4 is the schematic diagram of the bonded block forming the embodiment of the present invention.
First, as shown in Figures 1 and 2, the circuit breaker 1 of the present embodiment possesses earthed switch 10.Above-mentioned earthed switch 1, when above-mentioned circuit breaker 1 is positioned at test position, plays ground connection effect with the generation preventing short circuit or ground fault.Usually, above-mentioned earthed switch 10 is arranged at the back side of above-mentioned circuit breaker 1.
Specifically, above-mentioned earthed switch 10 comprises fixed contact 100 and moving contact portion 200.Above-mentioned fixed contact 100 is fixed on above-mentioned circuit breaker 1, and above-mentioned moving contact portion 200 is rotatably arranged at above-mentioned circuit breaker 1.When above-mentioned circuit breaker 1 is positioned at running status, above-mentioned fixed contact 100 and moving contact portion 200 are in non-contacting state.But, when above-mentioned circuit breaker 1 is positioned at test position, make above-mentioned fixed contact 100 and moving contact portion 200 contact ground connection by the rotation in above-mentioned moving contact portion 200.
Above-mentioned fixed contact 100 is fixed on the back side of above-mentioned circuit breaker 1.Above-mentioned fixed contact 100 comprises link 110 and fixed contact 120.Above-mentioned link 110 is fixed on the back side of above-mentioned circuit breaker 1 by the bonded block 130,140 that will illustrate.In addition, above-mentioned fixed contact 120 extends formation from above-mentioned link 110.When above-mentioned circuit breaker 1 is positioned at test position, above-mentioned fixed contact 120 contacts with above-mentioned moving contact portion 200.
As shown in Figure 3, above-mentioned link 110 comprises the fixed part 111 being fixed on above-mentioned circuit breaker 1 back side and the extension 113 extending formation from fixation portions 111.In fact, fixation portions 111 and above-mentioned extension 113 can be integrally formed.
Formed for bonded block 130,140 through through holes 112 in fixation portions 111.In addition, the through hole (not shown) at the through above-mentioned through hole 112 of above-mentioned bonded block 13,140 and the back side that is formed at above-mentioned circuit breaker 1 combines, thus makes above-mentioned link 110 be fixed on the back side of above-mentioned circuit breaker 1.
As shown in Figure 4, above-mentioned bonded block 120,140 comprises in conjunction with screw 130 and in conjunction with nut 140.Above-mentionedly can be included in its outer peripheral face in conjunction with screw 130 and form the trunk portion 131 of screw thread and the head 132 that possesses in above-mentioned trunk portion 131 one end.In addition, form above-mentioned the combined hole 141 combined for the above-mentioned trunk portion 131 in conjunction with screw 130 in conjunction with nut 140.
Again as shown in Figure 3, above-mentioned extension 113 extends formation from fixation portions 111.Such as, above-mentioned extension 113 extends formation from the direction that fixation portions 111 separates along the back side from above-mentioned circuit breaker 1.
Above-mentioned fixed contact 120 optionally with above-mentioned moving contact portion 200, be actually the movable plate 200 that will illustrate and contact.Above-mentioned fixed contact 120 is incorporated into above-mentioned extension 113.Such as, possess the through above-mentioned extension 113 of protuberance (not shown) in above-mentioned fixed contact 120, be fixed on above-mentioned extension 113 to make above-mentioned fixed contact 120.In addition, in the front end of the above-mentioned protuberance of through above-mentioned extension 113 in conjunction with other nut 123, be incorporated into above-mentioned extension 113 more firmly to make above-mentioned fixed contact 120.
Above-mentioned fixed contact 120 comprises the face portion 121 and side surface part 122 that possess predetermined width W.Above-mentioned side surface part 122, when above-mentioned circuit breaker 1 is positioned at test position and rotates above-mentioned current collector 200, is in fact combined with movable plate 220.
Above-mentioned moving contact portion 200 can be positioned at the below of above-mentioned fixed contact 100.Above-mentioned moving contact portion 200 is rotatably incorporated into above-mentioned circuit breaker 1, in fact to contact with above-mentioned fixed contact 120 or to separate.Above-mentioned moving contact portion 200 comprises axle 210 and movable plate 220.
Above-mentioned axle 210 becomes the pivot of above-mentioned movable plate 220.For this reason, above-mentioned axle 210 is rotatably arranged at the back side of above-mentioned circuit breaker 1.
In addition, on above-mentioned 210, support 211 is possessed.Above-mentioned support 211 plays the effect above-mentioned movable plate 220 being connected to above-mentioned axle 210.Above-mentioned support 211 is in the tabular orthogonal with above-mentioned axle 210.
Above-mentioned movable plate 220 comprises the first movable plate 221 and the second movable plate 222.First and second movable plate 221,222 above-mentioned is in the tabular possessing preset shape and size.In addition, first and second movable plate 221,222 above-mentioned forms by possessing certain flexible forming materials.
First and second movable plate 221,222 above-mentioned is fixed on above-mentioned axle 210, is actually the two sides of above-mentioned support 211.Such as, by the bonded block (not shown) of through above-mentioned first movable plate 221, support 211, second movable plate 222 successively, first and second movable plate 221,222 above-mentioned is made to be fixed on above-mentioned support 211.
In addition, the one side of first and second movable plate 211,222 above-mentioned is opposing parallel and establish.Therefore, if first and second movable plate 221,222 above-mentioned rotates centered by above-mentioned axle 210, then the relative face of first and second movable plate 221,222 above-mentioned is each with above-mentioned fixed contact 120, is actually above-mentioned side surface part 122 and contacts.
Therefore, in the present embodiment, the width W of above-mentioned face portion 121 is greater than the space D between the relative face of first and second movable plate 221,222 above-mentioned.This accurately contacts between above-mentioned fixed contact 120 and movable plate 220 to make.This is described in detail in content below.
In addition, between first and second movable plate 221,222 above-mentioned, pad 230 is possessed.Above-mentioned pad 230 plays the effect of the space D regulated between first and second movable plate 221,222 above-mentioned.That is, the space D between first and second movable plate 221,222 above-mentioned can be increased the length of above-mentioned pad 230.Such as, above-mentioned pad 230 can use and possesses the parts of preset length along the direction identical with above-mentioned axle 210 or possess the elastomeric element of certain elastic force.
Below, by reference to the accompanying drawings the embodiment of circuit interrupter grounding switch of the present invention is described in detail.
Fig. 5 is the schematic diagram that the circuit breaker of the embodiment applying circuit interrupter grounding switch of the present invention is positioned at test mode.
First, as shown in Figure 1, when circuit breaker 1 is positioned at running status, fixed contact 100 and moving contact portion 200 are spaced from each other.In this case, if above-mentioned circuit breaker 1 is positioned at test position, then as shown in Figure 5, in the counterclockwise direction, namely the direction of arrow A rotates axle 210.
In addition, if above-mentioned axle 210 rotates, then first and second movable plate 221,222 rotate with fixed contact 100, namely fixed contact 120 contacts.In fact, relative each one side of first and second movable plate 221,222 above-mentioned, respectively removes the side surface part 122 in above-mentioned fixed contact 120.Therefore, circuit can ground connection, thus in the test process of above-mentioned circuit breaker 1, prevent the generation of short circuit or ground fault.
But the width of above-mentioned fixed contact 120, namely the width W of face portion 121 is designed to the value of the space D be greater than between first and second movable plate 221,222 above-mentioned.Therefore, above-mentioned fixed contact 120 can be made more accurate with contacting of first and second movable plate 221,222.
Claims (6)
1., for making a circuit interrupter grounding switch for circuit ground in circuit breaker test process, comprising:
Fixed contact, is fixed on the one side of above-mentioned circuit breaker and comprises fixed contact;
Moving contact portion, comprises first and second movable plate optionally contacted with above-mentioned fixed contact; And
Pad, for regulate first and second movable plate above-mentioned relative one side between spacing;
Wherein, above-mentioned pad has default length along the direction identical with the axle of the pivot becoming first and second movable plate above-mentioned, and above-mentioned pad is arranged along the direction identical with the axle of the pivot becoming first and second movable plate above-mentioned,
And the one side of first and second movable plate above-mentioned is opposing parallel and establish, and above-mentioned fixed contact respectively contacts with the relative one side of first and second movable plate above-mentioned,
Wherein, the width of the face portion of above-mentioned fixed contact is greater than the spacing between the relative face of first and second movable plate above-mentioned.
2. circuit interrupter grounding switch according to claim 1, is characterized in that: above-mentioned fixed contact also comprises and is fixed on above-mentioned circuit breaker one side and the link combined for above-mentioned fixed contact by bonded block.
3. circuit interrupter grounding switch according to claim 2, it is characterized in that: under the state of side possessing the through above-mentioned link of projection in above-mentioned fixed contact, in the front end of above-mentioned projection in conjunction with nut, be incorporated into above-mentioned link to make above-mentioned fixed contact.
4. circuit interrupter grounding switch according to claim 1, is characterized in that: current collector portion is the pivot of first and second movable plate above-mentioned.
5. circuit interrupter grounding switch according to claim 4, is characterized in that: first and second movable plate above-mentioned is respectively fixed on the two sides possessed at above-mentioned shaft support.
6. circuit interrupter grounding switch according to claim 5, is characterized in that: above-mentioned support is in the tabular orthogonal with above-mentioned axle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0022250 | 2011-03-14 | ||
| KR1020110022250A KR101168533B1 (en) | 2011-03-14 | 2011-03-14 | Grounding switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102683121A CN102683121A (en) | 2012-09-19 |
| CN102683121B true CN102683121B (en) | 2015-04-01 |
Family
ID=46717372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210058899.3A Active CN102683121B (en) | 2011-03-14 | 2012-03-07 | Grounding switch of circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101168533B1 (en) |
| CN (1) | CN102683121B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI11881U1 (en) | 2017-09-15 | 2017-12-05 | Abb Oy | Coupler device whose fixed contact is provided with a measuring connector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441956A (en) * | 2001-08-02 | 2003-09-10 | 三菱电机株式会社 | Air circuit breaker |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100505053B1 (en) * | 2003-04-24 | 2005-08-03 | 엘에스산전 주식회사 | Toggle type earthing switch of ring main unit |
| EP2333799B1 (en) * | 2007-11-06 | 2015-04-08 | Mitsubishi Electric Corporation | A switch comprising a blade-type moving contact |
-
2011
- 2011-03-14 KR KR1020110022250A patent/KR101168533B1/en active IP Right Grant
-
2012
- 2012-03-07 CN CN201210058899.3A patent/CN102683121B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441956A (en) * | 2001-08-02 | 2003-09-10 | 三菱电机株式会社 | Air circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101168533B1 (en) | 2012-07-27 |
| CN102683121A (en) | 2012-09-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |