CN201508777U - Grounding switch and medium-voltage switch component comprising same - Google Patents
Grounding switch and medium-voltage switch component comprising same Download PDFInfo
- Publication number
- CN201508777U CN201508777U CN2009202161939U CN200920216193U CN201508777U CN 201508777 U CN201508777 U CN 201508777U CN 2009202161939 U CN2009202161939 U CN 2009202161939U CN 200920216193 U CN200920216193 U CN 200920216193U CN 201508777 U CN201508777 U CN 201508777U
- Authority
- CN
- China
- Prior art keywords
- earthed switch
- copper
- switch
- base
- fixed 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
Links
Images
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a grounding switch, which comprises a plurality of fixed contacts, a plurality of moving contacts, a plurality of insulating supports, a base, and a weaving bag which is connected with the base, wherein the fixed contacts comprises connecting support brackets which are fixedly connected with the insulating supports, a left flash guard and a right flash guard which are symmetrically and fixedly positioned on the connecting support brackets, and a left copper lamp and a right copper clamp which are arranged at the inner sides of the left flash guard and the right flash guard; and the moving contacts are respectively articulated with the base, and each moving contact is fixedly provided with a short copper bar. Preferentially, the outer side ends of the left copper lamp and the right copper lamp are respectively and fixedly connected with the outer side ends of the left flash guard and the right flash guard to form a whole, and the surfaces of the opposite inner sides of the left copper lamp and the right copper lamp are provided with inner concave grooves. Preferentially, the fixed contacts further comprise gap control plates which are fixed positioned among the left flash guard, the right flash guard and the support bracket, and the middle parts of the gap control plates are provided with openings; and the movable ends of the inner sides of the left copper clamp and the right copper clamp are inserted into the openings of the gap control plates to limit the opening degree between the left copper lamp and the right copper lamp. On the basis, the utility model further provides a medium-voltage switch component with the grounding switch.
Description
Technical field
The utility model relates to a kind of assembly that is used for switchgear, is specifically related to a kind of earthed switch and has the Medium voltage switch or circuit breaker assembly of this earthed switch.
Background technology
Earthed switch is used for the ground connection operation of line terminal or bus termination, to guarantee personal safety.Particularly in the process of plant maintenance operation, it is particularly important that above-mentioned effect seems.In addition, no less important in the course of normal operation of switchgear assemblies.
In the actual mechanical process, before with line terminal or bus termination ground connection, must disconnect the upstream provides power supply from electric power to switchgear assemblies; But, under certain conditions, may be owing to mistake with alive circuit ground connection; In the process of before carrying out the closing of switch, bus being safeguarded, when the upstream power supply is switched on unintentionally once more, will produce another kind of dangerous situation.In above-mentioned two kinds of situations, be necessary that correct function by employed earthed switch prevents to wound the people and equipment causes damage.Obviously, the specified short circuit withstand capacity of earthed switch is a most important technical parameter of guaranteeing correctly to realize this function.
At present, in the prior art, although known earthed switch can correctly be carried out the function of ground connection, its specified short circuit withstand capacity is relatively poor, can't guarantee that specified short circuit withstand capacity reaches 50 kilo-amperes/3 second.In fact, existing earthed switch exists many technological deficiencies to make it possess to be suitable for being used to guarantee that earthed switch reaches high performance structural; Particularly, do not have the conductive area of enough moving contacts and fixed contact and the syndeton of optimization, therefore, can not effectively control moving contact and fixed contact contact area and moving contact and fixed contact contact pressure, thereby reduce moving contact and fixed contact contact resistance; Moving contact and fixed contact are not integrated in the load module, and more element and complicated assembly method have increased production cost and installation time, and further influenced the reliability of earthed switch.
In view of this, demand developing a kind of earthed switch of structure optimization urgently, to improve its functional reliability.
The utility model content
At above-mentioned defective, the technical problem that the utility model solves is, provides a kind of earthed switch, to improve its specified short circuit withstand capacity.On this basis, the utility model also provides a kind of Medium voltage switch or circuit breaker assembly with this earthed switch.
The earthed switch that the utility model provides comprises some fixed contacts, some moving contacts, some insulation supports, base and the litzendraht wire that is connected with base; Described fixed contact comprises:
Connect bracing frame, be connected with described insulation support fixation;
Left and right anti-arc guard, symmetry are fixedly arranged on and connect on the bracing frame; With
Left and right copper folder sets up the inboard that is arranged at left and right anti-arc guard separately; And
Described some moving contacts are hinged with base respectively, and are set with short copper bar on each moving contact.
Preferably, the outboard end of described left and right copper folder is fixed with one with the outboard end of left and right anti-arc guard respectively, and the opposed inside surface of left and right copper folder has the indent groove.
Preferably, described fixed contact also comprises the clearance control plate that is fixedly set between described left and right anti-arc guard and the bracing frame, and the middle part of this clearance control plate has opening; And the inboard movable end of described left and right copper folder is plugged in the opening of described clearance control plate, to limit the aperture between the described left and right copper folder.
Preferably, the quantity of described fixed contact and moving contact is specially three.
The Medium voltage switch or circuit breaker assembly that the utility model provides, comprise foregoing earthed switch, the base of described earthed switch is fixedly set on the dividing plate of Medium voltage switch or circuit breaker assembly, the fixed contact of described earthed switch is connected with the electrical equipment major loop of Medium voltage switch or circuit breaker assembly, and described litzendraht wire is connected with the grounded circuit of Medium voltage switch or circuit breaker assembly.
Compared with prior art, the utility model is set with short copper bar on each moving contact, to change the loop of circuital current, reduce resistance, reduce electric energy and transform heat energy, change into heat energy thereby reduce short circuit current too much electric energy in, also can strengthen earthed switch simultaneously and resist electrodynamic ability by earthed switch.In addition, moving contact and fixed contact are integrated in the load module, reduce the quantity of parts, thereby are easy to realize the assembling with switchgear, and have higher security performance and unfailing performance.
In the preferred version of the present utility model, the opposed inside surface of the left and right copper folder that cooperates with moving contact on the fixed contact has the indent groove, with the effective contact area and the contact pressure of assurance fixed contact and moving contact, thereby reduce moving contact and fixed contact contact resistance, reduce equipment heating.
In another preferred version of the present utility model, be set with the clearance control plate between described left and right anti-arc guard and the bracing frame, the middle part of this clearance control plate has opening; The inboard movable end of left and right copper folder is plugged in the opening of described clearance control plate, thereby limits the aperture between the left and right copper folder, further guarantees the contact pressure between fixed contact and the moving contact.
Description of drawings
Fig. 1 is the structural representation of the described Medium voltage switch or circuit breaker assembly of embodiment;
Fig. 2 is the stereogram that is in the earthed switch of enable possition described in the embodiment;
Fig. 3 is the stereogram of the earthed switch that is in the close position described in the embodiment;
Fig. 4 is the explosive view of the fixed contact of earthed switch described in embodiment assembly;
Fig. 5 is the stereogram of the moving contact of earthed switch described in the embodiment.
Among the figure:
Medium voltage switch or circuit breaker assembly 100, dividing plate 10, electrical equipment major loop 20;
Fixed contact 1, connection bracing frame 11, left anti-arc guard 12, right anti-arc guard 13, left copper folder 14, right copper folder 15, clearance control plate 16, opening 161, moving contact 2, insulation support 3, base 4, weak point copper bar 5.
Embodiment
Core of the present utility model is to provide a kind of earthed switch, improves its service behaviour by structure optimization design.
Being without loss of generality, is that example is elaborated with the Medium voltage switch or circuit breaker assembly below.Need to prove that the related inside and outside noun of locality that waits is the benchmark definition with the contact center herein.The use that should be appreciated that the described noun of locality does not limit the scope that the application asks for protection.
See also Fig. 1, this figure is the structural representation of the described Medium voltage switch or circuit breaker assembly of present embodiment.
As shown in the figure, Medium voltage switch or circuit breaker assembly 100 comprises earthed switch, the base of earthed switch is fixedly set on the dividing plate 10 of Medium voltage switch or circuit breaker assembly, the fixed contact of earthed switch is connected with the electrical equipment major loop 20 of Medium voltage switch or circuit breaker assembly, and litzendraht wire is connected (not shown) with the grounded circuit of Medium voltage switch or circuit breaker assembly.
What specify is, other functional parts of Medium voltage switch or circuit breaker assembly are same as the prior art, and those skilled in the art can realize fully based on prior art, so this paper repeats no more.Describe the earthed switch in this programme below in detail.
Earthed switch comprises that three fixed contacts 1, three moving contacts 2, three insulation support 3, base 4 and the litzendraht wire (not shown) that is connected with base.Please in the lump referring to Fig. 2, Fig. 3, Fig. 4 and Fig. 5; Wherein, Fig. 2 is the stereogram that is in the earthed switch of enable possition; Fig. 3 is the stereogram of the earthed switch that is in the close position; Fig. 4 is the explosive view of earthed switch fixed contact assembly; Fig. 5 is the stereogram of earthed switch moving contact.
As shown in Figure 4, fixed contact 1 comprises that connecting bracing frame 11, left anti-arc guard 12, right anti-arc guard 13, left copper folder 14 and right copper presss from both sides 15; Connect bracing frame 11 and fixedly connected with insulation support 3, left anti-arc guard 12, right anti-arc guard 13 symmetries are fixedly arranged on and connect on the bracing frame 11; Left side copper folder 14, right copper folder 15 set up the inboard that is arranged at left and right anti-arc guard separately.Particularly, the outboard end of left copper folder 14, right copper folder 15 is fixed with one with the outboard end of left anti-arc guard 12, right anti-arc guard 13 respectively, to improve its elastic force; And the opposed inside surface of left copper folder 14, right copper folder 15 has the indent groove, to reduce difficulty of processing, improves flatness.So design can effectively guarantee the effective contact area and the contact pressure of fixed contact and moving contact, thereby reduce moving contact and fixed contact contact resistance, and then reduces equipment heating.
As shown in Figure 5, three moving contacts 2 are hinged with base 4 respectively, and are set with short copper bar 5 on each moving contact 2.To change the loop of circuital current, reduce resistance, reduce electric energy and transform heat energy, change into heat energy thereby reduce short circuit current too much electric energy in by earthed switch, also can strengthen earthed switch simultaneously and resist electrodynamic ability.In addition, moving contact and fixed contact are integrated in the load module, reduce the quantity of parts, thereby are easy to realize the assembling with switchgear, and have higher security performance and unfailing performance.
Again as shown in Figure 4, fixed contact 1 comprises also and is fixedly set in left anti-arc guard 12, right anti-arc guard 13 and is connected clearance control plate 16 between the bracing frame 11 that the middle part of this clearance control plate 16 has opening 161; And the inboard movable end of left copper folder 14, right copper folder 15 is plugged in the opening 161 of described clearance control plate 16, like this, under the closure state, the aperture between the left and right copper folder is subjected to the restriction of opening 161 two sides, thereby increases the contact pressure between moving contact and the fixed contact.
To sum up, the earthed switch essence ground that the utility model provides has reduced the heat that earthed switch produces under the carrying short circuit current, thereby the temperature that guarantees each part of moving contact component and fixed contact assembly does not reach the fusing point of its materials used, and then guarantees the short circuit withstand capacity of earthed switch.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. earthed switch comprises some fixed contacts, some moving contacts, some insulation supports, base and the litzendraht wire that is connected with base; It is characterized in that,
Described fixed contact comprises:
Connect bracing frame, be connected with described insulation support fixation;
Left and right anti-arc guard, symmetry are fixedly arranged on and connect on the bracing frame; With
Left and right copper folder sets up the inboard that is arranged at left and right anti-arc guard separately; And
Described some moving contacts are hinged with base respectively, and are set with short copper bar on each moving contact.
2. earthed switch according to claim 1 is characterized in that, the outboard end of described left and right copper folder is fixed with one with the outboard end of left and right anti-arc guard respectively, and the opposed inside surface of left and right copper folder has the indent groove.
3. earthed switch according to claim 2 is characterized in that, described fixed contact also comprises:
The clearance control plate is fixedly set between described left and right anti-arc guard and the bracing frame, and the middle part of this clearance control plate has opening;
And the inboard movable end of described left and right copper folder is plugged in the opening of described clearance control plate, to limit the aperture between the described left and right copper folder.
4. according to claim 1,2 or 3 described earthed switches, it is characterized in that the quantity of described fixed contact and moving contact is specially three.
5. Medium voltage switch or circuit breaker assembly, comprise earthed switch, it is characterized in that, described earthed switch is as in the claim 1 to 4 as described in each, the base of described earthed switch is fixedly set on the dividing plate of Medium voltage switch or circuit breaker assembly, the fixed contact of described earthed switch is connected with the electrical equipment major loop of Medium voltage switch or circuit breaker assembly, and described litzendraht wire is connected with the grounded circuit of Medium voltage switch or circuit breaker assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202161939U CN201508777U (en) | 2009-09-17 | 2009-09-17 | Grounding switch and medium-voltage switch component comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202161939U CN201508777U (en) | 2009-09-17 | 2009-09-17 | Grounding switch and medium-voltage switch component comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508777U true CN201508777U (en) | 2010-06-16 |
Family
ID=42469902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202161939U Expired - Fee Related CN201508777U (en) | 2009-09-17 | 2009-09-17 | Grounding switch and medium-voltage switch component comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201508777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106030743A (en) * | 2014-01-23 | 2016-10-12 | Abb技术有限公司 | Earthing switch |
-
2009
- 2009-09-17 CN CN2009202161939U patent/CN201508777U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106030743A (en) * | 2014-01-23 | 2016-10-12 | Abb技术有限公司 | Earthing switch |
| CN106030743B (en) * | 2014-01-23 | 2018-06-12 | Abb技术有限公司 | Earthing switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103155072B (en) | Be particularly useful for the Electical connector of air insulation medium voltage breaker | |
| CN205911269U (en) | Breaker | |
| CN103745896B (en) | A kind of movable contact system of chopper | |
| CN106098485B (en) | A kind of breaker | |
| CN105301296B (en) | Live plug connector of low-voltage metering box | |
| WO2017186061A1 (en) | Circuit breaker contact system and circuit breaker | |
| CN202905645U (en) | Temperature sensing type temperature fuse provided with contacts | |
| CN108352279A (en) | It is hinged the connector that presses for breaker of plastic casing | |
| CN203733736U (en) | Moving contact system of breaker | |
| CN201508777U (en) | Grounding switch and medium-voltage switch component comprising same | |
| CN203491172U (en) | Conductive arm structure of high voltage disconnector | |
| CN201440393U (en) | 110KV positive-negative isolating switch mechanical mistake-prevention locking device | |
| CN102243944A (en) | Double-breakpoint contact mechanism of low-voltage circuit breaker | |
| CN216902573U (en) | Electric connection structure of movable plug-in connector contact | |
| CN107293415A (en) | One kind is applied to high-tension apparatus high-current switch contact | |
| CN201725752U (en) | Double break contact mechanism of low-voltage circuit breaker | |
| CN208655548U (en) | The structure-improved of moving contact of breaker system | |
| CN206758385U (en) | A kind of surge protector with double disconnectors | |
| CN203165831U (en) | Breaker | |
| CN207966871U (en) | A kind of miniature circuit breaker | |
| CN206628399U (en) | A kind of strong high voltage isolator moving contact of contact performance | |
| CN212063007U (en) | Conducting loop tripping device of switch cabinet | |
| CN209708929U (en) | The contact system of low-voltage circuit breaker | |
| CN218447618U (en) | Transfer switch device and dual power transfer switch device | |
| CN221079925U (en) | Drop-out quick-break switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20170917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |