CN110690073A - Electromagnetic control type vacuum contactor - Google Patents
Electromagnetic control type vacuum contactor Download PDFInfo
- Publication number
- CN110690073A CN110690073A CN201910977953.6A CN201910977953A CN110690073A CN 110690073 A CN110690073 A CN 110690073A CN 201910977953 A CN201910977953 A CN 201910977953A CN 110690073 A CN110690073 A CN 110690073A
- Authority
- CN
- China
- Prior art keywords
- shell
- vacuum arc
- copper bar
- transmission shaft
- extinguishing chamber
- 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.)
- Pending
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Classifications
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- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Abstract
The invention discloses an electromagnetic control type vacuum contactor, comprising: the electromagnetic driving mechanism comprises a shell, a main circuit, an electromagnetic driving mechanism and a set of signal state feedback mechanism mainly composed of a microswitch. The main circuit comprises an incoming line copper bar fixed on the shell and connected with a static contact of the vacuum arc-extinguishing chamber; the outgoing line copper bar is fixed on the shell and is fixedly connected with the contact finger; the contact finger is in sliding fit with the moving contact of the vacuum arc-extinguishing chamber, and the outgoing line copper bar conducts current with the moving contact of the vacuum arc-extinguishing chamber through the contact finger; the electromagnetic driving mechanism comprises an electromagnet which acts on the transmission shaft through a driving rod; the transmission shaft is connected with the return spring and is positioned on the shell through the positioning sleeve; two ends of the insulator are respectively connected and fixed with the transmission shaft and the over travel spring box; the over travel spring box is fixedly connected with a moving contact of the vacuum arc extinguish chamber. The invention not only furthest saves the installation and use space in the converter cabinet under the condition of the same breaking capacity, but also improves the safety and reliability of the system and reduces the use cost.
Description
Technical Field
The invention relates to the technical field of contactors for rolling stock, in particular to an electromagnetic control type vacuum contactor.
Background
The contactor used for electric transmission and traction rolling stock is mainly installed in the traction current-converting system of the rolling stock or motor train unit, belonging to the isolation protection device of the main circuit of the rolling stock. The main function of the device is circuit isolation protection between a locomotive vehicle traction transformer and a traction converter system; the breaking capacity and the service life of the contactor are directly related to the running state of the rolling stock, and the contactor is an important circuit protection device in a rolling stock circuit.
At present, the protective device in China always adopts an air contactor, the air contactor needs a large arc extinguishing device due to large breaking current, electric arc is sprayed out of the arc extinguishing device when the air contactor is broken, the space occupied by the air contactor is large, the main contact is large in electrical wear, the main contact needs to be replaced periodically, the arc extinguishing device needs to be cleaned, and maintenance cost is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the electromagnetic control type vacuum contactor, which not only saves the installation and use space in the converter cabinet to the maximum extent under the condition of the same breaking capacity, but also improves the safety and reliability of the system and reduces the use cost.
The purpose of the invention is realized by the following technical scheme:
an electromagnetically controlled vacuum contactor comprising: the electromagnetic driving mechanism comprises a shell, a main circuit, an electromagnetic driving mechanism and a signal state feedback mechanism; the main circuit comprises a vacuum arc extinguish chamber, an incoming line copper bar, a contact finger and an outgoing line copper bar; the vacuum arc-extinguishing chamber is fixed in the shell; the incoming line copper bar is fixed on the shell and connected with a static contact of the vacuum arc-extinguishing chamber; the outgoing copper bar is fixed on the shell and is fixedly connected with the contact finger; the contact finger is in sliding fit with a moving contact of the vacuum arc-extinguishing chamber, and the outgoing line copper bar conducts current with the moving contact of the vacuum arc-extinguishing chamber through the contact finger; the electromagnetic driving mechanism comprises an electromagnet, a driving rod, a return spring, an insulator, a transmission shaft, a positioning sleeve and an over travel spring box; the electromagnet acts on the transmission shaft through the driving rod; the transmission shaft is connected with the return spring and is positioned on the shell through the positioning sleeve; one end of the insulator is fixedly connected with the transmission shaft, and the other end of the insulator is fixedly connected with the over travel spring box; the over travel spring box is fixedly connected with a moving contact of the vacuum arc-extinguishing chamber; the signal state feedback mechanism comprises a microswitch box and an operating lever; the operating rod is fixed with the transmission shaft and is connected with the microswitch box; when the transmission shaft acts, the operating rod is driven to move, and the state of the microswitch is changed through a cam plate on the microswitch box.
Preferably, the overtravel spring box comprises a connecting body, an overtravel spring, a transmission sleeve and a transmission pin; the connecting body is fixedly connected with a moving contact of the vacuum arc-extinguishing chamber; the transmission sleeve is fixedly connected with the insulator; the overtravel spring is arranged between the connecting body and the transmission sleeve; the connecting body and the transmission sleeve are positioned through the transmission pin; the observation hole is arranged on the shell corresponding to the mounting position of the transmission pin.
Preferably, the two side faces of the shell corresponding to the mounting position of the transmission pin are provided with observation holes.
Preferably, the state of the micro-switch on the micro-switch box is used as a position state signal of a main contact of the vacuum arc-extinguishing chamber.
According to the technical scheme provided by the invention, the electromagnetic control type vacuum contactor provided by the invention takes the vacuum arc-extinguishing chamber as an arc-extinguishing element, arc extinguishing is finished in the vacuum arc-extinguishing chamber, and an air arc-extinguishing device is not needed, so that the installation and use space in the converter cabinet is effectively reduced, and no arc is sprayed out during working, so that the safety and reliability of an electrical system in the converter cabinet are improved, a main contact is not required to be periodically replaced, the arc-extinguishing device is not required to be cleaned, the availability of the system is improved, and the use cost is reduced. In addition, the electromagnetic control type vacuum contactor provided by the invention is additionally provided with an electromagnetic driving mechanism and a signal state feedback mechanism on the basis of a vacuum arc extinguish chamber, and particularly the application of an over travel spring box, so that the electromagnetic control type vacuum contactor finally ensures compact structure and no arc ejection, reduces the required insulation distance to the maximum extent, and improves the safety and reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electromagnetic control type vacuum contactor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an over travel spring case according to an embodiment of the present invention.
In the figure, 1-shell, 2-vacuum arc extinguish chamber, 3-incoming copper bar, 4-outgoing copper bar, 5-micro switch box, 6-return spring, 7-driving rod, 8-electromagnet, 9-insulator, 10-overtravel spring box, 11-operating lever, 12-contact finger, 13-transmission shaft, 14-positioning sleeve, 15-connecting body, 16-transmission pin, 17-overtravel spring and 18-transmission sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, unless otherwise specified, all references to "upper" and "lower" herein for describing orientation do not refer specifically to that orientation, but merely for convenience of description, the orientation of the product may vary from one orientation to another. An orientation that would be understood by one of ordinary skill in the art without making any creative effort would be within the scope of the present invention.
The electromagnetic control type vacuum contactor provided by the present invention will be described in detail. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
As shown in fig. 1 and 2, an electromagnetic control type vacuum contactor is mainly used between a transformer and a converter of a rolling stock to finally realize the functions of electric protection between circuits, and the specific structure of the electromagnetic control type vacuum contactor may include: the device comprises a shell 1, a main circuit, an electromagnetic driving mechanism and a signal state feedback mechanism;
the main circuit comprises a vacuum arc extinguish chamber 2, an incoming copper bar 3, a contact finger 12 and an outgoing copper bar 4; the vacuum arc-extinguishing chamber 2 is fixed in the shell 1; the incoming line copper bar 3 is fixed on the shell 1, and the incoming line copper bar 3 is connected with a static contact of the vacuum arc extinguish chamber 2; the outgoing copper bar 4 is fixed on the shell 1, and the outgoing copper bar 4 is fixedly connected with the contact finger 12; the contact finger 12 is in sliding fit with the moving contact of the vacuum arc-extinguishing chamber 2, and the outgoing line copper bar 4 conducts current with the moving contact of the vacuum arc-extinguishing chamber 2 through the contact finger 12.
The electromagnetic driving mechanism comprises an electromagnet 8, a driving rod 7, a return spring 6, an insulator 9, a transmission shaft 13, a positioning sleeve 14 and an over travel spring box 10; the electromagnet 8 acts on the transmission shaft 13 through the driving rod 7; the transmission shaft 13 is connected with the return spring 6 and is positioned on the shell 1 through a positioning sleeve 14; one end of the insulator 9 is fixedly connected with the transmission shaft 13, and the other end of the insulator 9 is fixedly connected with the over travel spring box 10; the over travel spring box 10 is fixedly connected with a moving contact of the vacuum arc extinguish chamber 2.
The signal state feedback mechanism comprises a microswitch box 5 and a control lever 11; the operating rod 11 is fixed with the transmission shaft 13 and is connected with the microswitch box 5; the actuating shaft 13 moves the actuating lever 11 when actuated, and the actuating lever 11 changes the state of the microswitch by means of a cam plate on the microswitch box 5.
Specifically, the electromagnetic control type vacuum contactor may include the following embodiments:
(1) the vacuum arc extinguish chamber 2 is preferably a large-capacity vacuum arc extinguish chamber, a static contact of the vacuum arc extinguish chamber 2 is connected with the incoming line copper bar 3, and a moving contact of the vacuum arc extinguish chamber 2 is connected with the overtravel spring box 10.
(2) The outgoing line copper bar 4 is fixedly connected with the contact finger 12, the contact finger 12 is in sliding fit with the moving contact of the vacuum arc-extinguishing chamber 2, and the outgoing line copper bar 4 is completely conducted with the moving contact of the vacuum arc-extinguishing chamber 2 through the contact finger 12 to conduct current.
(3) The overtravel spring box 10 comprises a connecting body 15, an overtravel spring 17, a transmission sleeve 18 and a transmission pin 16; the connecting body 15 is fixedly connected with a moving contact of the vacuum arc-extinguishing chamber 2; the transmission sleeve 18 is fixedly connected with the insulator 9; the overtravel spring 17 is arranged between the connecting body 15 and the transmission sleeve 18, the connecting body 15 is arranged in the transmission sleeve 16, the connecting body 15 is jacked up through the overtravel spring 17, and the compression stroke of the overtravel spring 17 is limited by the transmission pin 16 between the transmission sleeve 16 and the connecting body 15; the connecting body 15 and the driving sleeve 18 are positioned by the driving pin 16; the shell 1 is provided with an observation hole corresponding to the installation position of the transmission pin 16. The structure of the over travel spring box 10 effectively reduces the structure of the over travel spring 17, and the over travel amount is conveniently and effectively measured through the observation hole formed in the corresponding position of the transmission pin 16 on the shell 1, and whether the contact is reliably closed and contacted is judged.
(4) One end of the insulator 9 is connected with the transmission sleeve 18 of the over travel spring box 10, and the other end of the insulator 9 is connected with the transmission shaft 13, so that the insulator 9 effectively insulates a main circuit formed by the vacuum arc extinguish chamber 2 while transmitting the closing and breaking acting force of the transmission shaft 13, and avoids high-voltage electrification of an electromagnetic driving mechanism and a signal feedback mechanism.
(5) In the electromagnetic driving mechanism, an electromagnet 8 acts on a transmission shaft 13 through a driving rod 7, the transmission shaft 13 is connected with a return spring 6 and is positioned on a shell 1 through a positioning sleeve 14, and the positioning sleeve 14 ensures that the transmission shaft 13 moves up and down to transmit electromagnetic force. The driving rod 7 in the electromagnetic driving structure is a labor-saving lever, so that the required electromagnetic driving force is effectively reduced, the power consumption and the size of the electromagnet 8 are reduced, and the structure is more compact.
(6) In the signal state feedback mechanism, the transmission shaft 13 drives the operating lever 11 to move when acting, the state of the microswitch is changed through the cam plate on the microswitch box 5, the signal change of the main contact state of the vacuum arc-extinguishing chamber 2 is realized, and the state change is transmitted to a vehicle control system in real time through the electrical connection between the vacuum arc-extinguishing chamber and a vehicle.
Further, the operation mechanism of the electromagnetic control type vacuum contactor is as follows:
(1) after the electromagnet 8 is electrified, the iron core of the electromagnet 8 moves downwards to drive the driving rod 7, so that the transmission shaft 13 connected with the other end of the driving rod 7 acts, and due to the constraint of the positioning sleeve 14, the transmission shaft 13 is ensured to move vertically upwards, and the return spring 6 is compressed. The transmission shaft 13 moves upwards and is transmitted to the transmission sleeve 18 of the over travel spring box 10 through the insulator 9, the over travel spring 17 in the transmission sleeve 18 is further compressed, the compression force of the over travel spring 17 acts on the connecting body 15 matched with the transmission sleeve 18, the connecting body 15 directly acts on the compression force on the movable contact of the vacuum arc extinguish chamber 2 to drive the movable contact of the vacuum arc extinguish chamber 2 to move upwards, the main contact is closed, and the connection of the main circuit of the vacuum contactor is completed. Through the observation hole that sets up corresponding driving pin 16 position on the shell 1, convenient effectual observation overtravel judges whether reliable closed contact of vacuum contactor main contact. Meanwhile, the transmission shaft 13 moves upwards to drive the operating rod 11 to move upwards, the state of the microswitch is changed through a cam plate on the microswitch box 5, the signal change of the main contact state of the vacuum arc extinguish chamber is realized, and the state change is transmitted to a vehicle control system in real time through the electrical connection between the vacuum arc extinguish chamber and a vehicle.
(2) After the electromagnet 8 loses power, the return spring 6 resets, the transmission shaft 13 moves downwards under the action of the spring force, and the iron core of the electromagnet 8 connected with the other end of the driving rod 7 moves upwards to reset through the driving rod 7. The downward movement of the transmission shaft 13 drives the insulator 9 to pull the transmission sleeve 18 of the over travel spring box 10 downward, the over travel spring 17 acting in the transmission sleeve 18 further releases the compression force, the transmission pin 16 between the transmission sleeve 18 and the connecting body 15 pulls the connecting body 15 downward, the connecting body 15 directly acts the restoring force on the movable contact of the vacuum arc-extinguishing chamber 2, the movable contact of the vacuum arc-extinguishing chamber 2 is driven to move downward, the main contact is disconnected, and the breaking of the main circuit of the vacuum contactor is completed. Through the observation hole that sets up corresponding driving pin 16 position on the shell 1, convenient effectual observation overtravel judges whether reliable closing and opening of vacuum contactor main contact. Meanwhile, the transmission shaft 13 moves downwards to drive the operating rod 11 to move downwards, the state of the microswitch is changed through a cam plate on the microswitch box 5, the signal change of the main contact state of the vacuum arc extinguish chamber is realized, and the state change is transmitted to a vehicle control system in real time through the electrical connection between the vacuum arc extinguish chamber and a vehicle.
Compared with the prior art, the contactor used by the electric transmission and traction rolling stock in the prior art always adopts an air contactor, and the electromagnetic control type vacuum contactor provided by the invention can replace the air contactor to be used as the contactor used by the electric transmission and traction rolling stock, so that the air contactor adopted by similar functional products in the market at present is avoided. The electromagnetic control type vacuum contactor provided by the invention takes the vacuum arc extinguishing chamber as an arc extinguishing element, arc extinguishing is finished in the vacuum arc extinguishing chamber, and an air arc extinguishing device is not used, so that the installation and use space in the converter cabinet is effectively reduced, and no arc is sprayed during working, so that the safety and reliability of an electrical system in the converter cabinet are improved, the main contact does not need to be periodically replaced, the arc extinguishing device does not need to be cleaned, the availability of the system is improved, and the use cost is reduced. In addition, the electromagnetic control type vacuum contactor provided by the invention is additionally provided with an electromagnetic driving mechanism and a signal state feedback mechanism on the basis of a vacuum arc extinguish chamber, and particularly the application of an over travel spring box, so that the electromagnetic control type vacuum contactor finally ensures compact structure and no arc ejection, reduces the required insulation distance to the maximum extent, and improves the safety and reliability.
In conclusion, the embodiment of the invention not only saves the installation and use space in the converter cabinet to the maximum extent under the condition of the same breaking capacity, but also improves the safety and reliability of the system and reduces the use cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. An electromagnetic control type vacuum contactor, comprising: the device comprises a shell (1), a main circuit, an electromagnetic driving mechanism and a signal state feedback mechanism;
the main circuit comprises a vacuum arc extinguish chamber (2), an incoming line copper bar (3), a contact finger (12) and an outgoing line copper bar (4); the vacuum arc-extinguishing chamber (2) is fixed in the shell (1); the wire inlet copper bar (3) is fixed on the shell (1), and the wire inlet copper bar (3) is connected with a static contact of the vacuum arc-extinguishing chamber (2); the outgoing line copper bar (4) is fixed on the shell (1), and the outgoing line copper bar (4) is fixedly connected with the contact finger (12); the contact finger (12) is in sliding fit with the moving contact of the vacuum arc-extinguishing chamber (2), and the outgoing line copper bar (4) is in current conduction with the moving contact of the vacuum arc-extinguishing chamber (2) through the contact finger (12);
the electromagnetic driving mechanism comprises an electromagnet (8), a driving rod (7), a return spring (6), an insulator (9), a transmission shaft (13), a positioning sleeve (14) and an over-travel spring box (10); the electromagnet (8) acts on the transmission shaft (13) through the driving rod (7); the transmission shaft (13) is connected with the return spring (6) and is positioned on the shell (1) through a positioning sleeve (14); one end of the insulator (9) is fixedly connected with the transmission shaft (13), and the other end of the insulator (9) is fixedly connected with the over travel spring box (10); the over travel spring box (10) is fixedly connected with a moving contact of the vacuum arc-extinguishing chamber (2);
the signal state feedback mechanism comprises a microswitch box (5) and a control lever (11); the operating rod (11) is fixed with the transmission shaft (13) and is connected with the microswitch box (5); when the transmission shaft (13) acts, the operating rod (11) is driven to move, and the state of the microswitch is changed through a cam plate on the microswitch box (5).
2. The electromagnetically controlled vacuum contactor according to claim 1, wherein said overtravel spring case (10) comprises a connecting body (15), an overtravel spring (17), a driving sleeve (18) and a driving pin (16);
the connecting body (15) is fixedly connected with a moving contact of the vacuum arc-extinguishing chamber (2); the transmission sleeve (18) is fixedly connected with the insulator (9); the overtravel spring (17) is arranged between the connecting body (15) and the transmission sleeve (18); the connecting body (15) and the transmission sleeve (18) are positioned through the transmission pin (16); the shell (1) is provided with an observation hole corresponding to the installation position of the transmission pin (16).
3. The electromagnetic control type vacuum contactor according to claim 2, wherein both side surfaces of the housing (1) corresponding to the mounting position of the driving pin (16) are provided with observation holes.
4. Electromagnetically controlled vacuum contactor according to claim 1, 2 or 3, characterized in that the state of the micro-switches on the micro-switch box (5) is used as a position state signal of the main contacts of the vacuum interrupter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977953.6A CN110690073A (en) | 2019-10-15 | 2019-10-15 | Electromagnetic control type vacuum contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910977953.6A CN110690073A (en) | 2019-10-15 | 2019-10-15 | Electromagnetic control type vacuum contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110690073A true CN110690073A (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910977953.6A Pending CN110690073A (en) | 2019-10-15 | 2019-10-15 | Electromagnetic control type vacuum contactor |
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| Country | Link |
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| CN (1) | CN110690073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710540A (en) * | 2020-06-30 | 2020-09-25 | 广东电网有限责任公司 | Integrative communication equipment of adapted electricity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537612Y (en) * | 2002-01-29 | 2003-02-26 | 崔德兴 | Vacuum breaker for railway power traction |
| CN201294195Y (en) * | 2008-09-02 | 2009-08-19 | 虞旭海 | Miniaturisation high voltage permanent magnet vacuum circuit breaker module |
| CN105047472A (en) * | 2015-07-07 | 2015-11-11 | 上海翔洲电气科技有限公司 | Single-stage vacuum contactor |
| CN107706043A (en) * | 2017-11-28 | 2018-02-16 | 北京中车赛德铁道电气科技有限公司 | A kind of vacuum direct current quick breaker |
| CN207637700U (en) * | 2017-11-27 | 2018-07-20 | 北京中车赛德铁道电气科技有限公司 | Breaker spring mechanism |
-
2019
- 2019-10-15 CN CN201910977953.6A patent/CN110690073A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2537612Y (en) * | 2002-01-29 | 2003-02-26 | 崔德兴 | Vacuum breaker for railway power traction |
| CN201294195Y (en) * | 2008-09-02 | 2009-08-19 | 虞旭海 | Miniaturisation high voltage permanent magnet vacuum circuit breaker module |
| CN105047472A (en) * | 2015-07-07 | 2015-11-11 | 上海翔洲电气科技有限公司 | Single-stage vacuum contactor |
| CN207637700U (en) * | 2017-11-27 | 2018-07-20 | 北京中车赛德铁道电气科技有限公司 | Breaker spring mechanism |
| CN107706043A (en) * | 2017-11-28 | 2018-02-16 | 北京中车赛德铁道电气科技有限公司 | A kind of vacuum direct current quick breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710540A (en) * | 2020-06-30 | 2020-09-25 | 广东电网有限责任公司 | Integrative communication equipment of adapted electricity |
| CN111710540B (en) * | 2020-06-30 | 2022-11-11 | 广东电网有限责任公司 | Integrative communication equipment of adapted electricity |
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Application publication date: 20200114 |