CN110459420B - Special medium-voltage dual-power switching device with mechanical interlocking function - Google Patents
Special medium-voltage dual-power switching device with mechanical interlocking function Download PDFInfo
- Publication number
- CN110459420B CN110459420B CN201910687656.8A CN201910687656A CN110459420B CN 110459420 B CN110459420 B CN 110459420B CN 201910687656 A CN201910687656 A CN 201910687656A CN 110459420 B CN110459420 B CN 110459420B
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- connecting rod
- circuit breaker
- vacuum circuit
- main shaft
- switching device
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- 230000005540 biological transmission Effects 0.000 claims description 43
- 230000007246 mechanism Effects 0.000 claims description 31
- 230000009977 dual effect Effects 0.000 claims description 11
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
Classifications
-
- 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
- H01H33/46—Interlocking mechanisms
- H01H33/52—Interlocking mechanisms for interlocking two or more 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
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides an integrated special medium-voltage dual-power switching device with mechanical interlocking, which comprises a first vacuum circuit breaker, a second vacuum circuit breaker, a first connecting rod and a second connecting rod, wherein after the first vacuum circuit breaker is manually or electrically switched on, a first main shaft rotates to drive the first connecting rod to be ejected upwards and move to a second unlocking ejector rod position, so that the unlocking action cannot be completed, and the second vacuum circuit breaker cannot be switched on. The second vacuum circuit breaker structure is identical to the first vacuum circuit breaker structure, and after closing, the first vacuum circuit breaker can be prevented from closing by the same process. The integrated special medium-voltage dual-power switching device with the mechanical interlocking, provided by the invention, has the advantages that the defect that misoperation is generated due to failure of electronic components or failure of in-place travel indication in the current electric appliance interlocking scheme is avoided, the one-closing one-opening of two vacuum circuit breakers is fully ensured, and the safety and reliability of a circuit are ensured.
Description
Technical Field
The invention relates to the field of vacuum circuit breakers, in particular to an integrated special medium-voltage dual-power switching device with mechanical interlocking.
Background
The dual power supply device generally consists of two vacuum circuit breakers, and in the dual power supply device, the two circuit breakers are electrically interlocked in the conventional case. Specifically, when one circuit breaker is closed, the other circuit breaker cannot be closed. However, the other breaker can be switched on by external manual operation, and the aim of completely prohibiting switching on cannot be achieved.
Meanwhile, because the electronic components such as contacts can fail, or the stroke in-place indication fails, the whole electric interlocking scheme can fail to cause misoperation, and the control of switching on and switching off the two circuit breakers is disabled.
Disclosure of Invention
In view of the above, the invention provides an integrated special medium-voltage dual-power supply switching device with mechanical interlocking, which adopts a connecting rod scheme to replace the traditional electric interlocking scheme, when one of the circuit breakers is in a switching-on state, the other circuit breaker can only be in a switching-off or energy storage state and cannot perform switching-on operation, namely, the two circuit breakers cannot be switched on at the same time at all, so that the safety and reliability of a circuit are ensured.
The invention provides an integrated special medium-voltage dual-power switching device with mechanical interlocking, which comprises:
the first vacuum circuit breaker comprises a first driving mechanism, a first main shaft, a first spring mechanism and a first rotating shaft, wherein the first driving mechanism drives the first main shaft to rotate, the first main shaft compresses the first spring mechanism, and a first unlocking ejector rod is arranged at the end part of the first rotating shaft;
the second vacuum circuit breaker is arranged upside down with the first vacuum circuit breaker, the second vacuum circuit breaker comprises a second driving mechanism, a second main shaft, a second spring mechanism and a second rotating shaft, the second driving mechanism drives the second main shaft to rotate, the second main shaft compresses the second spring mechanism, and a second unlocking ejector rod is arranged at the end part of the second rotating shaft;
the first connecting rod is eccentrically connected to the first end of the first main shaft, the free end of the first connecting rod extends to a second unlocking ejector rod on the same side as the first end, and a U-shaped structure is formed among the first connecting rod, the second unlocking ejector rod, the second rotating shaft and the first main shaft;
the second connecting rod is eccentrically connected to the second end of the second main shaft, the second end is on the same side as the third end of the first main shaft, the third end and the first end are respectively positioned at the opposite ends of the first main shaft in the axial direction, the free end of the second connecting rod extends to a first unlocking ejector rod on the same side as the second end, and a U-shaped structure is formed among the second connecting rod, the first unlocking ejector rod, the first rotating shaft and the second main shaft.
Further, a first cam piece is mounted on the first end of the first spindle, and a first link is connected to the first cam piece.
Further, a first limiting ejector rod is fixedly arranged at the free end of the first connecting rod and is perpendicular to the first connecting rod.
Further, a second cam piece is mounted on the second end of the second spindle, and a second connecting rod is connected with the second cam piece.
Further, a second limiting ejector rod is fixedly arranged at the free end of the second connecting rod and is perpendicular to the second connecting rod.
Further, the first driving mechanism comprises a first motor, a first gear pair, a first transmission shaft and a first transmission chain, the first motor drives the first gear pair to rotate, the first gear pair drives the first transmission shaft to rotate, and the first transmission shaft drives the first main shaft to rotate through the first transmission chain.
Further, the first transmission shaft is connected with the first handle, and the first handle drives the first transmission shaft to rotate.
Further, the second driving mechanism comprises a second motor, a second gear pair, a second transmission shaft and a second transmission chain, the second motor drives the second gear pair to rotate, the second gear pair drives the second transmission shaft to rotate, and the second transmission shaft drives the second main shaft to rotate through the second transmission chain.
Further, the second transmission shaft is connected with the second handle, and the second handle drives the second transmission shaft to rotate.
Further, the first vacuum circuit breaker and the second vacuum circuit breaker are installed in a vertically inverted stacked combination.
The invention provides an integrated special medium-voltage dual-power switching device with mechanical interlocking, which comprises a first vacuum circuit breaker, a second vacuum circuit breaker, a first connecting rod and a second connecting rod, wherein after the first vacuum circuit breaker is manually or electrically switched on, a first main shaft rotates to drive the first connecting rod to be ejected upwards and move to a second unlocking ejector rod position, so that unlocking action cannot be completed, namely the second vacuum circuit breaker cannot be switched on. The second vacuum circuit breaker structure is identical to the first vacuum circuit breaker structure, and after closing, the first vacuum circuit breaker can be prevented from closing by the same process.
The integrated special medium-voltage dual-power switching device with the mechanical interlocking, provided by the invention, has the advantages that the defect that misoperation is generated due to failure of electronic components or failure of in-place travel indication in the current electric appliance interlocking scheme is avoided, the one-closing one-opening of two vacuum circuit breakers is fully ensured, and the safety and reliability of a circuit are ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of an integrated dedicated medium-voltage dual-power switching device with mechanical interlocking according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an integrated special medium-voltage dual-power switching device with mechanical interlocking in a closing state according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an integrated dedicated medium-voltage dual-power switching device with mechanical interlock in a switching-off state according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first vacuum circuit breaker with a mechanical interlocking integrated special medium-voltage dual-power switching device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example 1
Referring to fig. 1 to 4, there is shown an integrated dedicated medium voltage dual power switching device with mechanical interlock according to an embodiment of the present invention, including:
the first vacuum circuit breaker 1 comprises a first driving mechanism 11, a first main shaft 12, a first spring mechanism 13 and a first rotating shaft 14, wherein the first driving mechanism 11 drives the first main shaft to rotate 12, the first main shaft 12 compresses the first spring mechanism 13, and a first unlocking ejector rod 15 is arranged at the end part of the first rotating shaft 14;
the second vacuum circuit breaker 2 with the same structure as the first vacuum circuit breaker 1 is arranged upside down with the first vacuum circuit breaker 1, the second vacuum circuit breaker 2 comprises a second driving mechanism 21, a second main shaft 22, a second spring mechanism 23 and a second rotating shaft 24, the second driving mechanism 21 drives the second main shaft 22 to rotate, the second main shaft 22 compresses the second spring mechanism 23, and a second unlocking ejector rod 25 is arranged at the end part of the second rotating shaft 24;
the first connecting rod 3 is eccentrically connected to the first end 121 of the first main shaft 12, the free end of the first connecting rod 3 extends to a second unlocking ejector rod 25 on the same side as the first end 121, and a U-shaped structure is formed among the first connecting rod 3, the second unlocking ejector rod 25, the second rotating shaft 24 and the first main shaft 12;
the second connecting rod 4 is eccentrically connected to the second end 221 of the second main shaft 22, the second end 221 is on the same side as the third end 122 of the first main shaft 12, the third end 122 and the first end 121 are respectively located at two opposite ends of the first main shaft 12 in the axial direction, the free end of the second connecting rod 4 extends to a first unlocking ejector rod 15 on the same side as the second end 221, and a U-shaped structure is formed among the second connecting rod 4, the first unlocking ejector rod 15, the first rotating shaft 14 and the second main shaft 22.
Specifically, referring to fig. 1 to 4, the first end 121 of the first main shaft 12 is mounted with a first cam piece 16, and the first link 3 is connected to the first cam piece 16.
Specifically, referring to fig. 1 to 4, a second cam piece 26 is mounted on the second end 221 of the second main shaft 22, and the second link 4 is connected to the second cam piece 26.
Specifically, referring to fig. 1 to 4, the first transmission shaft 113 is connected to the first handle 115, and the first handle 115 drives the first transmission shaft 113 to rotate.
Specifically, referring to fig. 1 to 4, the second transmission shaft 213 is connected to the second handle 215, and the second handle 215 drives the second transmission shaft 213 to rotate.
Specifically, referring to fig. 1 to 4, the first vacuum interrupter 1 and the second vacuum interrupter 2 are mounted in a vertically inverted stacked combination.
The invention provides an integrated special medium-voltage dual-power switching device with mechanical interlocking, which comprises a first vacuum circuit breaker, a second vacuum circuit breaker, a first connecting rod and a second connecting rod, wherein after the first vacuum circuit breaker is manually or electrically switched on, a first main shaft rotates to drive the first connecting rod to be ejected upwards and move to a second unlocking ejector rod position, so that unlocking action cannot be completed, and the second vacuum circuit breaker cannot be switched on. The second vacuum circuit breaker structure is identical to the first vacuum circuit breaker structure, and after closing, the first vacuum circuit breaker can be prevented from closing by the same process.
The integrated special medium-voltage dual-power switching device with the mechanical interlocking, provided by the invention, has the advantages that the defect that misoperation is generated due to failure of electronic components or failure of in-place travel indication in the current electric appliance interlocking scheme is avoided, the one-closing one-opening of two vacuum circuit breakers is fully ensured, and the safety and reliability of a circuit are ensured.
Embodiment two:
referring to fig. 1 to fig. 4, a special integrated medium voltage dual power switching device with mechanical interlocking according to a second embodiment of the present invention is shown, and the following technical solutions are further provided as improvements on the basis of the foregoing embodiments: a first limiting ejector rod 31 is fixedly arranged on the free end of the first connecting rod 3 and is perpendicular to the first connecting rod 3. A second limiting ejector rod 41 is fixedly arranged on the free end of the second connecting rod 4 and is perpendicular to the second connecting rod 4.
The free ends of the first connecting rod and the second connecting rod are fixedly provided with the limiting ejector rod, so that the structure is simple, the rotation of the unlocking ejector rod is effectively limited, and the unlocking action is prevented from being completed.
Embodiment III:
referring to fig. 1 to 4, a third embodiment of the present invention provides an integrated dedicated medium voltage dual power switching device with mechanical interlock, and the present embodiment further makes the following technical solutions as improvements based on the foregoing embodiments: the first driving mechanism 11 includes a first motor 111, a first gear pair 112, a first transmission shaft 113, and a first transmission chain 114, the first motor 111 drives the first gear pair 112 to rotate, the first gear pair 112 drives the first transmission shaft 113 to rotate, and the first transmission shaft 113 drives the first spindle 12 to rotate through the first transmission chain 114.
The second driving mechanism 21 comprises a second motor 211, a second gear pair 212, a second transmission shaft 213 and a second transmission chain 214, the second motor 211 drives the second gear pair 212 to rotate, the second gear pair 212 drives the second transmission shaft 213 to rotate, and the second transmission shaft 213 drives the second main shaft 22 to rotate through the second transmission chain 214.
Besides manual closing, the device can also adopt a motor driving mode to carry out closing, and taking a first driving mechanism as an example, the first motor drives a first gear pair to rotate, the first gear pair drives a first transmission shaft to rotate, the first transmission shaft drives a first main shaft to rotate through a first transmission chain, the first main shaft drives a first connecting rod to ascend while rotating and accumulating energy, and the second unlocking ejector rod is prevented from unlocking.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. An integrated dedicated medium voltage dual power switching device with mechanical interlock, comprising:
the first vacuum circuit breaker (1) comprises a first driving mechanism (11), a first main shaft (12), a first spring mechanism (13) and a first rotating shaft (14), wherein the first driving mechanism (11) drives the first main shaft (12) to rotate, the first main shaft (12) compresses the first spring mechanism (13), and a first unlocking ejector rod (15) is arranged at the end part of the first rotating shaft (14);
the first driving mechanism (11) comprises a first motor (111), a first gear pair (112), a first transmission shaft (113) and a first transmission chain (114), wherein the first motor (111) drives the first gear pair (112) to rotate, the first gear pair (112) drives the first transmission shaft (113) to rotate, and the first transmission shaft (113) drives the first main shaft (12) to rotate through the first transmission chain (114);
the second vacuum circuit breaker (2) with the same structure as the first vacuum circuit breaker (1) is arranged upside down with the first vacuum circuit breaker (1), the second vacuum circuit breaker (2) comprises a second driving mechanism (21), a second main shaft (22), a second spring mechanism (23) and a second rotating shaft (24), the second driving mechanism (21) drives the second main shaft (22) to rotate, the second main shaft (22) compresses the second spring mechanism (23), and a second unlocking ejector rod (25) is arranged at the end part of the second rotating shaft (24);
the first vacuum circuit breaker (1) and the second vacuum circuit breaker (2) are arranged in an upside-down stacking combination mode;
the first connecting rod (3) is eccentrically connected to the first end (121) of the first main shaft (12), the free end of the first connecting rod (3) extends to a second unlocking ejector rod (25) on the same side as the first end (121), and a U-shaped structure is formed among the first connecting rod (3), the second unlocking ejector rod (25), the second rotating shaft (24) and the first main shaft (12);
the second connecting rod (4) is eccentrically connected to the second end (221) of the second main shaft (22), the second end (221) is on the same side as the third end (122) of the first main shaft (12), the third end (122) and the first end (121) are respectively located at two opposite ends in the axial direction of the first main shaft (12), the free end of the second connecting rod (4) extends to a first unlocking ejector rod (15) on the same side as the second end (221), and a U-shaped structure is formed between the second connecting rod (4), the first unlocking ejector rod (15), the first rotating shaft (14) and the second main shaft (22).
2. An integrated dedicated medium voltage dual power switching device with mechanical interlock according to claim 1, characterized in that a first cam plate (16) is mounted on a first end (121) of the first spindle (12), and the first connecting rod (3) is connected to the first cam plate (16).
3. An integrated dedicated medium voltage dual power switching device with mechanical interlock according to claim 1 or 2, characterized in that a first limit ejector rod (31) is fixedly mounted on the free end of the first connecting rod (3), which is perpendicular to the first connecting rod (3).
4. An integrated dedicated medium voltage dual power switching device with mechanical interlock according to claim 1, characterized in that a second cam plate (26) is mounted on the second end (221) of the second spindle (22), and the second connecting rod (4) is connected to the second cam plate (26).
5. An integrated dedicated medium voltage dual power switching device with mechanical interlock according to claim 1 or 4, characterized in that a second limit ejector rod (41) is fixedly mounted on the free end of the second connecting rod (4), which is perpendicular to the second connecting rod (4).
6. The integrated special medium-voltage dual-power switching device with mechanical interlocking according to claim 1, wherein the first transmission shaft (113) is connected with a first handle (115), and the first handle (115) drives the first transmission shaft (113) to rotate.
7. The integrated special medium-voltage dual-power-supply switching device with mechanical interlocking according to claim 1, wherein the second driving mechanism (21) comprises a second motor (211), a second gear pair (212), a second transmission shaft (213) and a second transmission chain (214), the second motor (211) drives the second gear pair (212) to rotate, the second gear pair (212) drives the second transmission shaft (213) to rotate, and the second transmission shaft (213) drives the second main shaft (22) to rotate through the second transmission chain (214).
8. An integrated dedicated medium voltage dual power switching device with mechanical interlock according to claim 7 wherein said second drive shaft (213) is connected to a second handle (215), said second handle (215) driving said second drive shaft (213) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687656.8A CN110459420B (en) | 2019-07-29 | 2019-07-29 | Special medium-voltage dual-power switching device with mechanical interlocking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687656.8A CN110459420B (en) | 2019-07-29 | 2019-07-29 | Special medium-voltage dual-power switching device with mechanical interlocking function |
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| Publication Number | Publication Date |
|---|---|
| CN110459420A CN110459420A (en) | 2019-11-15 |
| CN110459420B true CN110459420B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910687656.8A Active CN110459420B (en) | 2019-07-29 | 2019-07-29 | Special medium-voltage dual-power switching device with mechanical interlocking function |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114400165B (en) * | 2021-12-31 | 2023-12-12 | 深圳市瑞智电力股份有限公司 | Dual-power transfer switch and operating system thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100854384B1 (en) * | 2007-03-08 | 2008-08-26 | 엘에스산전 주식회사 | An automatic discharging apparatus for a closing spring of an air circuit breaker and an air circuit breaker with the apparatus |
| KR101036989B1 (en) * | 2009-12-23 | 2011-05-26 | 엘에스산전 주식회사 | Interlock apparatus of ground switch for vacuum circuit breaker |
| CN103036168A (en) * | 2012-11-30 | 2013-04-10 | 天水长城开关厂有限公司 | Handcart interlocking structure used for large current circuit breaker |
| CN103456558A (en) * | 2013-09-17 | 2013-12-18 | 厦门兴厦控电气有限公司 | Operating mechanism of vacuum circuit breaker |
| CN104157520A (en) * | 2014-08-30 | 2014-11-19 | 国家电网公司 | Disconnector transmission connecting module |
| CN205943821U (en) * | 2016-07-29 | 2017-02-08 | 国家电网公司 | Isolator and circuit breaker mechanical interlock |
| CN206628411U (en) * | 2017-02-27 | 2017-11-10 | 上海华东电器集团电气有限公司 | High interchangeability vacuum circuit breaker |
| CN109360753A (en) * | 2018-11-06 | 2019-02-19 | 安士缔(中国)电气设备有限公司 | The mechanical interlocking device and Dual-power device of middle pressure double power supply automatic switching switch |
| CN210516524U (en) * | 2019-07-29 | 2020-05-12 | 安士缔(中国)电气设备有限公司 | Integrated special medium-voltage dual-power switching device with mechanical interlocking function |
-
2019
- 2019-07-29 CN CN201910687656.8A patent/CN110459420B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100854384B1 (en) * | 2007-03-08 | 2008-08-26 | 엘에스산전 주식회사 | An automatic discharging apparatus for a closing spring of an air circuit breaker and an air circuit breaker with the apparatus |
| KR101036989B1 (en) * | 2009-12-23 | 2011-05-26 | 엘에스산전 주식회사 | Interlock apparatus of ground switch for vacuum circuit breaker |
| CN103036168A (en) * | 2012-11-30 | 2013-04-10 | 天水长城开关厂有限公司 | Handcart interlocking structure used for large current circuit breaker |
| CN103456558A (en) * | 2013-09-17 | 2013-12-18 | 厦门兴厦控电气有限公司 | Operating mechanism of vacuum circuit breaker |
| CN104157520A (en) * | 2014-08-30 | 2014-11-19 | 国家电网公司 | Disconnector transmission connecting module |
| CN205943821U (en) * | 2016-07-29 | 2017-02-08 | 国家电网公司 | Isolator and circuit breaker mechanical interlock |
| CN206628411U (en) * | 2017-02-27 | 2017-11-10 | 上海华东电器集团电气有限公司 | High interchangeability vacuum circuit breaker |
| CN109360753A (en) * | 2018-11-06 | 2019-02-19 | 安士缔(中国)电气设备有限公司 | The mechanical interlocking device and Dual-power device of middle pressure double power supply automatic switching switch |
| CN210516524U (en) * | 2019-07-29 | 2020-05-12 | 安士缔(中国)电气设备有限公司 | Integrated special medium-voltage dual-power switching device with mechanical interlocking function |
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| CN110459420A (en) | 2019-11-15 |
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