CN102017039A - Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means - Google Patents
Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means Download PDFInfo
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- CN102017039A CN102017039A CN2008801192904A CN200880119290A CN102017039A CN 102017039 A CN102017039 A CN 102017039A CN 2008801192904 A CN2008801192904 A CN 2008801192904A CN 200880119290 A CN200880119290 A CN 200880119290A CN 102017039 A CN102017039 A CN 102017039A
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- circuit breaker
- electric conductor
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- contact lever
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Abstract
A circuit breaker ( 1 ) comprises a vacuum chamber ( 2 ), a fixed contact and a movable contact disposed in the vacuum chamber ( 2 ), a fixed contact stem supporting the fixed contact in the vacuum chamber ( 2 ) and extending outwards from a first end of the vacuum chamber ( 2 ), a movable contact stem supporting the movable contact in the vacuum chamber ( 2 ) for reciprocal movement between contacting with and separating from the fixed contact, and extending outwards from a second end of the vacuum chamber ( 2 ), a first electrical conductor (3) coupled to the fixed contact stem, a second electrical conductor (4) coupled to the movable contact stem, and at least one heat dissipating means (5,6 ) disposed for at least one of the fixed contact and movable contact, wherein the heat dissipating means is hollow and has an external surface and an internal surface, a plurality of fins provided on the internal surface constitute a passage through which air is convected in a direction parallel to that of reciprocal movement of the movable contact stem.
Description
Technical field
The present invention relates to circuit breaker, particularly medium voltage breaker.More particularly, the present invention relates to heat abstractor at the heat that electric current produced that flows through circuit breaker.
Background technology
Circuit breaker (CB) is at the known overload protection arrangement such as the same equipment of powerful device (for example, engine, power transmission line, transformer, generator etc.).When electric current flow through CB, the resistance of the contact jaw of CB, contact lever and electric conductor produced heat.Suppose that resistance is constant, R for example, the heat that electric current I produced that flows through is approximately I
2R.In the practice, resistance R will increase along with the rising of the temperature of contact jaw, contact lever and electric conductor, and the heat that is produced is the reason that temperature raises.Therefore, the heat that in fact produces will be far longer than calculated value.As a rule; because the high temperature that is brought by heat can cause that the insulation unit is early aging, protective circuit misoperation even contact jaw and contact lever distortion and finally cause the CB fault, so the heat that resistance produced of the contact jaw of CB, contact lever and electric conductor is disadvantageous.
Therefore, for a long time, how heat radiation is the popular problem of this area always to CB, and this been has has been researched and developed different apparatus and method.
Fig. 1 illustrates disclosed Polar armature among the disclosed Chinese patent application CN1427431.Polar armature comprises extreme 2 and utmost point bearing 3, and its each outfit is by fin 9.This heat dissipating method is applicable to fixation of C B, but is not suitable for removable CB.In addition, because Polar armature is immersed in the SF6 gas, so insulation is not the key factor that will consider.
Patent application US5,753,875 is open at the heat dissipating method that produces heat among the CB.In the disclosure, shown in Fig. 2 A, place fixing and movable contact lever to strengthen the heat radiation of CB in radiator 43.Fig. 2 B illustrates the detailed structure of radiator 43.Radiator 43 comprises the one group every groove that radially extends that the lamination of central aperture is all arranged and every lamination is divided into some finger-like sheets.After the assembling, the groove of lamination forms many passages that radially extend by radiator.The air of this passage of flowing through will be taken away heat from radiator, and this has improved the heat radiation of CB.In the practice, for efficiently radiates heat, the size of radiator is very big; But the free space of the radiator of CB particularly for the removable CB as shown in above-mentioned patent application, is very limited.In addition, will form charge concentration at the drift angle place of finger-like sheet, this insulation to CB is disadvantageous.
Patent application WO2006/040243 provides the cooling-part by equipment that an electric conductor is connected to another heat sink conception, for example, the contact lever of CB is connected to his mobile contact jaw.Fig. 3 illustrates the structure of this equipment.As shown in Figure 3, the structure of link is complicated and cooling-part needs additional space, and this is disadvantageous for the limited CB of free space.
Summary of the invention
The free space that the object of the invention is to provide the heat radiation approach of CB and uses the thermal component among the CB more effectively.The present invention does not have negative effect to the insulating properties of CB.
One embodiment of the present of invention improve heat radiation based on the outer surface that uses thermal component and inner surface and reduce requirement to the space simultaneously.In this embodiment, the design thermal component so that cold air can be flowed through naturally it and the heat taking away among the CB effectively to be produced.
According to an aspect of the present invention, provide a kind of circuit breaker.This circuit breaker comprises and is arranged in described vacuum extinction indoor fixedly contact jaw and movable contact; Fixing contact lever, it stretches out at the described fixedly contact jaw of the indoor support of described vacuum extinction and from first end of described vacuum interrupter; Movable contact lever, its at the described movable contact of the indoor support of described vacuum extinction so that stretch out in reciprocating motion with fixing contact jaw contact and between separating and from second end of vacuum interrupter; With first electric conductor that is connected with described fixedly contact lever; Second electric conductor that is connected with described movable contact lever.This circuit breaker also is included as and is used at least one radiator that circuit breaker produces heat.This radiator is to comprise outside and inner hollow body.Outer surface and inner surface are respectively formed on outside and the inside.Inside is configured for cross-ventilated passage.Air is with the direction convection current parallel with the vibration-direction of described movable contact lever.The a plurality of fins of layout are strengthened heat radiation on inner surface.Inside is configured for holding electric conductor and forms the inner space.In a further advantageous embodiment, inside and outsidely cut apart wherein inner air duct and outside another air duct that is different from internal air passageway that extends to of extending to by common face.
In a preferred embodiment, first electric conductor and described fixedly contact lever are connected in first bond end; Second electric conductor and described movable contact lever are connected in second bond end; And described radiator and first bond end are connected with in second bond end at least one.
In a further advantageous embodiment, radiator is fixed to second bond end of circuit breaker, and the outside pedestal that forms a plurality of grooves on its outer surface that forms.That is, groove extends to offside edge (for example, lower limb) from a lateral edges (for example top edge) of outer surface.Fin is connected to the face of pedestal and extends inward on the inner surface.In addition, for the air smoothness, fin is separated from one another.
In a further advantageous embodiment, radiator is fixed to first bond end of circuit breaker and comprises pedestal, and wherein pedestal comprises three.Two faces wherein are relative and are parallel to each other.The 3rd face be perpendicular to above-mentioned two faces, and connect these two faces to form " U " shape pedestal.Described two faces are the form with barrier of parallel to each other and the column that separates.A plurality of fins extend to the inner space of pedestal from each column.Parallel to each other and the vertical pillars of fin is so that form pectinate texture each other a plurality of and that put and separate.
In a further advantageous embodiment, switchgear comprises also and is used for the connector that the electric conductor with CB is connected with its movable contact lever that wherein connector comprises first linkage unit and second linkage unit that is used to be connected electric conductor that is used to connect described removable contact lever.Second linkage unit comprises the flexible connecting member that is divided into a plurality of separation members, so that improve connection reliability and increase area of dissipation.
In a further advantageous embodiment, flexible connecting member comprises at least three separation members.
In a further advantageous embodiment, form at least one cannelure on each in the separation member.
In a further advantageous embodiment, each separation member comprises the overlap that is used to connect second electric conductor.
In a further advantageous embodiment, overlap at least one cannelure that to comprise described overlap cutting be sub-separation member.
In a further advantageous embodiment, first linkage unit has the hole that is used to hold described movable contact lever, forms flange on the inner surface in described hole, and described flange combines with the end face of described movable contact lever after installing.
According to one embodiment of present invention, electric conductor is the hollow cylinder that is formed with cannelure on it.Wherein, cylindrical inner surface has vertical rib so that inner surface is the fluctuating shape in a circumferential direction.
In a further advantageous embodiment, first electric conductor comprises overlap and current-carrying part, and described current-carrying part is the hollow cylinder that is formed with cannelure on it, and described cylindrical inner surface has vertical rib.
In a further advantageous embodiment, second electric conductor comprises overlap and current-carrying part, and described current-carrying part is the hollow cylinder that is formed with cannelure on it, and described cylindrical inner surface has vertical rib.
Description of drawings
Fig. 1 illustrates the existing conductive equipment that has cooling-part;
Fig. 2 A illustrates the CB that has radiator on its contact lever according to prior art;
Fig. 2 B illustrates the detailed structure of the radiator of CB shown in Figure 2;
Fig. 3 illustrates and has the link that is used for the contact lever of CB is connected to the cooling-part of its movable contact;
Fig. 4 A and 4B illustrate the structure of thermal component according to a preferred embodiment of the invention;
Fig. 5 A-5C illustrates the structure of thermal component according to a further advantageous embodiment of the invention;
Fig. 6 A and 6B illustrate the structure of link according to a preferred embodiment of the invention;
The cutaway view of the structure of link after Fig. 6 C illustrates and is installed in the CB;
Fig. 7 illustrates the structure of movable contact lever according to a preferred embodiment of the invention;
Fig. 8 illustrates the structure of fixedly contact lever according to a preferred embodiment of the invention; With
Fig. 9 illustrates the assembling of CB according to a preferred embodiment of the invention, and it comprises thermal component and link.
Embodiment
Fig. 9 illustrates the assembly drawing of switchgear, for example, and according to circuit breaker of the present invention (CB) 1.CB1 comprises: vacuum interrupter 2, it takes in fixedly contact jaw and the movable contact (not shown) that is used to connect and/or cut off circuit.Corresponding fixedly contact lever support fixation contact jaw and stretch out in vacuum interrupter 2 from the upper end of vacuum interrupter 2, and movably contact lever supports movable contact and stretches out from the lower end of vacuum interrupter 2 in vacuum interrupter 2.The combination of second contact lever and movable contact can be in vacuum interrupter 2 reciprocating motion so that with fixing contact jaw contact and/or separate.Described the general principle of CB above, it does not illustrate in the drawings, but should be conspicuous to those skilled in the art.CB of the present invention also comprises electric conductor 3 and 4, and CB is connected to protected equipment (not shown), for example engine, power transmission line, transformer or generator.CB also comprises connector 9, operating mechanism casing 8 and the insulator 7 that is used for movable contact is connected to electric conductor 4.Operating mechanism cover 8 is taken in the operating mechanism that is used to operate CB.Insulator 7 is with operation part and loading section insulation.According to Fig. 9, thermal component 5 is arranged in the electric conductor 3 and the fixing bond end of contact lever.In addition, another thermal component 6 is arranged in the bond end of connector 9 and electric conductor 4.Should be appreciated that thermal component can be arranged in other positions that heat energy enough is transmitted to.For example, thermal component also can be arranged in connector and conductor place.When thermal component being arranged into from the closer position of thermal source, such as contact jaw in the circuit breaker etc., it has preferable effect.In addition, action bars 10 is connected with movable contact and is operated by operating mechanism and connects and/or cut off CB.
Fig. 4 A illustrates the structure of thermal component 5, and Fig. 4 B illustrates along the cutaway view of the thermal component 5 of Fig. 4 A center line I-I so that export its detailed internal structure.After the installation, thermal component 5 will adapt with electric conductor 4 shown in Figure 7.After the installation, the water jacket 51 that is positioned on the thermal component 5 is vertical with ground.
From electric conductor 4 conduction heat, thermal component 5 is suitable for improving the contact-making surface with conductor for more effectively.For example, the surperficial 52a of a part of fin 52 has the profile of the part 42a of the outer surface that cooperates conductor 4.And some fins also have special shape, and promptly their surperficial 52b has the profile of other parts 41b of the outer surface that cooperates conductor 4.
As mentioned above, the cold air of the passage 55 that heat will be by circulating in thermal component 5 is taken away.By said structure, at first, the heat conduction that produces in circuit breaker is to thermal component 5.Next, so the cold circuit breaker that goes of cross-ventilation by taking place in the passage 55 of thermal component 5.In addition, fin 52 is designed to the direction extension substantially parallel with the direction of insertion of conductor 4.Thus, the contact area of thermal component and conductor significantly increases.Because the contact area that is increased improves heat conduction, so heat radiation towards periphery more effectively.Convection current emulation shows that this relies on total contact area of fin (heat radiation) according to embodiments of the invention heat conduction efficiency raising 10-30%.
In order to improve area of dissipation, the outer surface of pedestal 51 is joined a plurality of fin 51a.In order more preferably to utilize gaseous exchange, preferably shown in Fig. 4 A and 4B, be vertically formed groove.That is, after the installation, groove extends with the direction vertical with ground.
In addition, as shown in Figure 9, connector 9 is positioned on the thermal component 5, and the air that flows through parts 5 is directed to connector 9 and further improves heat radiation.Should be understood that thermal component 5 also can be installed at least one contact lever and the conductor.
Fig. 5 A illustrates the structure of thermal component 6, and Fig. 5 B and Fig. 5 C are the cutaway views along II-II and III-III among Fig. 5 A, and it at length illustrates the structure of parts 6 respectively.As shown in Figure 8, after the installation, thermal component 6 will with electric conductor 3 overall co-ordinations.
In an embodiment of the present invention, each pectinate texture is replaced in conjunction with forming by a plurality of short fins and long fin.Each end face combines with the corresponding end-faces coplane form of other fins so that forming the comb of pectinate texture carries on the back with it for short fin and long fin, and it is used for the column of barrier.Other ends of long fin or free end are as the Fin sheet that extends based on the pedestal inner space.
In an embodiment of the present invention, thermal component 6 comprises the two-part structure shown in Fig. 5 B.That is, a part comprises face 611 and face 612a and from the fin 62 of its extension, and another part comprises face 612 and face 611a and from the fin 62 of its extension.These two parts are bonded to each other so that form whole thermal component 6.In above-mentioned configuration, the fin 62 that extends from two opposite faces forms passages 63 and its relative free end holds beam 311 or 312, and after installing with box lunch, each free end is securely in conjunction with side 311a, 311b, or 312a, 312b.By this configuration, the heat that produces in conductor 3 can directly be transmitted to thermal component 6.
In order to strengthen heat radiation, the present invention also provides improved connector 9, is used for the movable contact lever of CB is connected to the appropriate section of electric conductor 4.Fig. 6 A and 6B illustrate the structure of this connector 9.
As shown in Figure 6A, connector 9 comprises first linkage unit 91 and second linkage unit 92 that is used to be connected second electric conductor 4 that is used to connect described removable contact lever.First linkage unit 91 has the hole 911 that is used to hold movable contact lever.Second linkage unit 92 comprises the flexible connecting member of being made up of a plurality of separation members 921,922,923,924, is used to improve connection reliability and increases area of dissipation.Compare with traditional connector, connector of the present invention comprises that a plurality of separation members with thin profile improve its flexibility.In a preferred embodiment, each separation member of flexible connecting member is equipped with at least one cannelure 93 shown in Fig. 6 A and 6B further to improve flexibility.In another preferred embodiment, the lower ends downward of groove 93 extends to the edge of groove 93 separation members of living in, for example, the edge 921a of separation member 921, so that the standing part of this separation member 94 is divided into sub-separation member, second connector will be more reliable with contacting of electric conductor 4, so that further reduce contact resistance and further reduce the heat that produces in lap-joint that causes owing to contact resistance thus.
In a preferred embodiment of the invention, hole 911 is equipped with flange 912, so that cooperate movable contact by push rod (action bars) 10.Shown in Fig. 6 C, flange 912 is pushed to an end of movable contact lever and combines with it, so that be increased in the contact area between connector 9 and the movable contact lever, reduces contact resistance and consequent heat thus.Another advantage of this structure is before connector 9 is fixed to movable contact lever the most at last, and push rod 10 support connecting pieces are so that limit the installation that CB is simplified in the installation site.
Fig. 7 and 8 illustrates the structure of electric conductor 4 according to an embodiment of the invention and 3 respectively.Shown in Fig. 7 and 8, electric conductor comprises overlap 31,41 and current-carrying part 32,42 respectively.Overlap 31 is designed to be connected and fixed contact lever and holds thermal component 6, and overlap 41 is designed to connect connector 9 and takes in thermal component 5.Current-carrying part 32 and 42 is designed to further improve thermal diffusivity and arrives conductivity.
With current-carrying part 42 is example.As shown in Figure 7, current-carrying part 42 is the hollow cylinders that are formed with cannelure 43 on it, and cylindrical inner surface has vertical rib 44 so that inner surface is the fluctuating shape in a circumferential direction.According to said structure, the zone of inner surface is increased the heat that produces thus and can sheds more effectively in contact lever.According to said structure, the cross-sectional area of contact lever that has increased effective conduction is so that allow bigger zone be used to the to flow through electric current of electric conductor.Be lower than given load, this means that the material that is used to form electric conductor can be thinner, this improves radiating efficiency for air flows provides more interior space.
Though illustrate and described the utility model with reference to some preferred embodiment of the present invention, but it will be appreciated by those skilled in the art that, do not deviating under the situation of the spirit and scope of the present invention that limit by appended claims, can make various variations to it in the form and details.
Claims (20)
1. a circuit breaker (1) comprising:
Vacuum interrupter (2);
Be arranged in fixedly contact jaw and movable contact in the described vacuum interrupter (2);
Fixing contact lever, it supports described fixedly contact jaw and stretches out from first end of described vacuum interrupter (2) in described vacuum interrupter (2);
Movable contact lever, its described vacuum interrupter (2) in, support described movable contact in case contact with fixing contact jaw and separate between reciprocating motion and stretch out from second end of vacuum interrupter (2);
First electric conductor (3) that is connected with described fixedly contact lever;
Second electric conductor (4) that is connected with described movable contact lever; With
At least one radiator (5,6) at least one layout in described fixedly contact jaw and the described movable contact;
It is characterized in that:
Described radiator (5,6) is the hollow body that comprises outer surface and inner surface; The a plurality of Fin sheets (52,56) that are arranged on the described inner surface form passage (55), by described passage (55) air with the direction convection current parallel with the vibration-direction of described movable contact lever.
2. circuit breaker as claimed in claim 1 (1), wherein first electric conductor (3) is connected in first bond end with described fixedly contact lever; Second electric conductor (4) is connected in second bond end with described movable contact lever; And described radiator (5,6) and first bond end are connected with in second bond end at least one.
3. circuit breaker as claimed in claim 2 (1), wherein said radiator (5) also comprise first (511,611), second (512,612) and the 3rd (513,613); First (511,611) and second (512,612) parallel to each other and respectively from two edges of the 3rd (513,613) with identical, extend with the 3rd direction that (513,613) are vertical basically.
4. circuit breaker as claimed in claim 3 (1), wherein said outer surface are formed with installs its direction of back and the vertical substantially a plurality of grooves (51a) in ground.
5. circuit breaker as claimed in claim 3 (1) has the mouth (53) that is used for by second electric conductor (4) in wherein said the 3rd.
6. circuit breaker as claimed in claim 5 (1), the diameter of wherein said mouthful (53) matches with the overall diameter of second electric conductor (4), so that back the 3rd (513,613) and second electric conductor (4) combination securely is installed.
7. circuit breaker as claimed in claim 6 (1), wherein said Fin sheet (52) from the 3rd (513,613) to extend internally and to be separated from each other with the 3rd basic vertical direction.
8. circuit breaker as claimed in claim 3 (1), wherein first (611) and second (612) are formed with a plurality of parallel to each other and columns (611a) of separating.
9. circuit breaker as claimed in claim 8 (1), wherein said Fin sheet (62) extends internally with direction each from described column (62) of vertical substantially described column (62), and is separated from each other.
10. circuit breaker as claimed in claim 8 (1), in the wherein said column (62) each is replaced in conjunction with forming by a plurality of short Fin sheets and long Fin sheet, in wherein said short Fin sheet and the long Fin sheet each has the end face with the end face coplane of other Fin sheets, and the other end of described long Fin sheet formation Fin sheet (62).
11. as the described circuit breaker of one of claim 8 to 10 (1), wherein said circuit breaker (1) comprises at least two radiators (6).
12. circuit breaker as claimed in claim 1 (1), also comprise and be used for connector (9) that second electric conductor (4) is connected with described movable contact lever, described connector (9) comprises first linkage unit (91) and second linkage unit (92) that is used to be connected second electric conductor (4) that is used to connect described removable contact lever, wherein second linkage unit (92) comprises by the separation member (921 that is connected to first linkage unit (91), 922,923,924) flexible connecting member of Zu Chenging.
13. circuit breaker as claimed in claim 12 (1), wherein said flexible connecting member is made up of at least three separation members.
14. circuit breaker as claimed in claim 13 (1) wherein forms at least one cannelure (93) on each in described separation member.
15. as the described circuit breaker of one of claim 12 to 14 (1), wherein each separation member comprises the overlap (94) that is used to connect second electric conductor (4).
16. circuit breaker as claimed in claim 15 (1), wherein said overlap (94) comprise at least one cannelure (93) with described overlap (94) cutting.
17. circuit breaker as claimed in claim 12 (1), wherein first linkage unit (91) has the hole (911) that is used to hold described movable contact lever, on the inner surface of described hole (911), form flange (912), and described flange (912) combines with the end face of described movable contact lever after installing.
18. circuit breaker as claimed in claim 1 (1), wherein first electric conductor (3) comprises overlap (31) and current-carrying part (32), described current-carrying part (32) is the hollow cylinder that is formed with cannelure (33) on it, and described cylindrical inner surface has vertical rib (34).
19. circuit breaker as claimed in claim 1 (1), wherein second electric conductor (4) comprises overlap (41) and current-carrying part (42), described current-carrying part (42) is the hollow cylinder that is formed with cannelure (43) on it, and described cylindrical inner surface has vertical rib (44).
20. circuit breaker as claimed in claim 1 (1), wherein said circuit breaker are removable circuit breakers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200880119290.4A CN102017039B (en) | 2007-12-07 | 2008-12-05 | Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2007/071203 WO2009079871A1 (en) | 2007-12-07 | 2007-12-07 | Circuit breaker with a heat dissipating means |
| CNPCT/CN2007/071203 | 2007-12-07 | ||
| CNPCT/CN2007/07120.3 | 2007-12-07 | ||
| CN200880119290.4A CN102017039B (en) | 2007-12-07 | 2008-12-05 | Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means |
| PCT/CN2008/001971 WO2009074016A1 (en) | 2007-12-07 | 2008-12-05 | Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102017039A true CN102017039A (en) | 2011-04-13 |
| CN102017039B CN102017039B (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880119290.4A Active CN102017039B (en) | 2007-12-07 | 2008-12-05 | Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102017039B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768913A (en) * | 2011-05-04 | 2012-11-07 | 西门子公司 | Switching device radiating plate and switching device comprising same |
| CN104733220A (en) * | 2013-12-20 | 2015-06-24 | Ls产电株式会社 | Terminal structure of main circuit part of vacuum circuit breaker |
| CN109690719A (en) * | 2016-09-19 | 2019-04-26 | 伊顿智能动力有限公司 | Advanced cooling system for electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180916A (en) * | 1996-10-15 | 1998-05-06 | 尹顿公司 | Heat sink for contact stems of vacuum interrupter and vacuum interrupter therewith |
| CN1427431A (en) * | 2001-12-21 | 2003-07-02 | 西门子公司 | Polar armature |
| CN1474486A (en) * | 2002-08-07 | 2004-02-11 | 三菱电机株式会社 | Breaking device for power |
| CN1787147A (en) * | 2004-12-09 | 2006-06-14 | 三菱电机株式会社 | Switchgear |
| CN1787146A (en) * | 2004-12-09 | 2006-06-14 | 三菱电机株式会社 | Opening and closing device |
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- 2008-12-05 CN CN200880119290.4A patent/CN102017039B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180916A (en) * | 1996-10-15 | 1998-05-06 | 尹顿公司 | Heat sink for contact stems of vacuum interrupter and vacuum interrupter therewith |
| CN1427431A (en) * | 2001-12-21 | 2003-07-02 | 西门子公司 | Polar armature |
| CN1474486A (en) * | 2002-08-07 | 2004-02-11 | 三菱电机株式会社 | Breaking device for power |
| CN1787147A (en) * | 2004-12-09 | 2006-06-14 | 三菱电机株式会社 | Switchgear |
| CN1787146A (en) * | 2004-12-09 | 2006-06-14 | 三菱电机株式会社 | Opening and closing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768913A (en) * | 2011-05-04 | 2012-11-07 | 西门子公司 | Switching device radiating plate and switching device comprising same |
| CN102768913B (en) * | 2011-05-04 | 2015-12-16 | 西门子公司 | The heating panel of switching device and switching device thereof |
| CN104733220A (en) * | 2013-12-20 | 2015-06-24 | Ls产电株式会社 | Terminal structure of main circuit part of vacuum circuit breaker |
| US9418805B2 (en) | 2013-12-20 | 2016-08-16 | Lsis Co., Ltd. | Terminal structure of main circuit part of vacuum circuit breaker |
| CN104733220B (en) * | 2013-12-20 | 2017-07-18 | Ls产电株式会社 | The terminal structure of the main circuit part of vacuum circuit breaker |
| CN109690719A (en) * | 2016-09-19 | 2019-04-26 | 伊顿智能动力有限公司 | Advanced cooling system for electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102017039B (en) | 2014-04-02 |
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