CN113345731A - Miniaturized capacitance-regulating switch and capacitance-regulating transformer - Google Patents
Miniaturized capacitance-regulating switch and capacitance-regulating transformer Download PDFInfo
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- CN113345731A CN113345731A CN202010262871.6A CN202010262871A CN113345731A CN 113345731 A CN113345731 A CN 113345731A CN 202010262871 A CN202010262871 A CN 202010262871A CN 113345731 A CN113345731 A CN 113345731A
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- voltage
- low
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- capacity
- regulating
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- 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
- H01H9/0005—Tap change devices
- H01H9/0011—Voltage selector switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
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- 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
- H01H9/0005—Tap change devices
- H01H9/0027—Operating mechanisms
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- 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
- H01H9/0005—Tap change devices
- H01H9/0038—Tap change devices making use of vacuum switches
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- 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
- H01H9/0005—Tap change devices
- H01H9/0044—Casings; Mountings; Disposition in transformer housing
-
- 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
- H01H9/0072—Details of switching devices, not covered by groups H01H1/00 - H01H7/00 particular to three-phase switches
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a miniaturized capacity regulating switch and a capacity regulating transformer, which are characterized by comprising a high-voltage capacity regulating driving mechanism, a high-voltage change-over switch assembly, a high-voltage selection switch assembly, a low-voltage capacity regulating driving mechanism, a low-voltage selection switch assembly, an installation bottom plate and a metal installation plate. The high-voltage change-over switch assembly, the high-voltage selective switch assembly and the low-voltage selective switch assembly are all designed in a linear mode, the permanent magnet and the electromagnetic mechanism are used for driving switching and selection, and a spring energy storage mechanism with a complex mechanical structure is omitted, so that the switch is simple in structure and small in size, the operation reliability is improved, the production cost is reduced, and the production cost of producing the capacity-regulating distribution transformer is reduced. The switch adopts the vacuum interrupter to switch at the accent appearance in-process, has avoided drawing the arc because of the contact switches and has influenced the performance of transformer insulating oil, has reduced because of the maintenance cost that oil strain, oil change brought for the user.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a miniaturized capacitance-regulating switch and a capacitance-regulating transformer.
Background
In recent years, energy conservation and loss reduction, environmental protection and the like are advocated in China, and enterprises have to pay attention to the problem of electric energy waste. In the case of a distribution network, distribution transformer losses are one of the main losses of the distribution network. With the continuous development of social economy and the continuous improvement of the standard of living of people, the power load is continuously increased, the load is changed periodically and seasonally, the capacity of the distribution transformer is selected according to high capacity, the distribution transformer still operates in high capacity when the load is small, the loss is the loss of the high-capacity transformer, the setting of the distribution transformer is not in line with the development requirements of energy conservation and loss reduction of the market, therefore, a capacity conversion device of the distribution transformer needs to be additionally arranged, the distribution transformer is converted into a small-capacity operation mode when the load is small or no load is generated, the traditional cylinder capacity regulating switch is large in size, is arranged on the side face of the transformer, needs to increase the size of the transformer, is complex to install, is high in cost, is low in reliability and is not popularized and used all the time, and a capacity regulating switch which is miniaturized and is high in reliability is needed to fill the market blank.
Disclosure of Invention
The invention provides a miniaturized capacity regulating switch and a capacity regulating transformer, which solve the maintenance problem by adopting vacuum arc extinguishing, adopt electromagnetic drive and linear structure arrangement, have simple structure and small volume, hardly change the conventional shape and volume of the transformer when being installed in a distribution transformer, improve the reliability, reduce the production cost of the capacity regulating transformer for users and are suitable for the distribution transformer with huge quantity.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a miniaturized capacity regulating switch is used for a three-phase capacity regulating switch for regulating the capacity of a three-phase transformer and is characterized by comprising a high-voltage capacity regulating driving mechanism, a high-voltage change-over switch assembly, a high-voltage selection switch assembly, a low-voltage capacity regulating driving mechanism, a low-voltage selection switch assembly, an installation bottom plate and a metal installation plate;
the high-voltage selector switch assembly and the high-voltage selector switch assembly are arranged on the metal mounting plate; the low-voltage capacity-regulating driving mechanism and the low-voltage selection switch assembly are arranged on the mounting base plate;
the high-voltage capacity regulating driving mechanism is positioned on the upper side of the low-voltage capacity regulating mechanism, and the high-voltage selector switch assembly are positioned on the upper side of the low-voltage selector switch assembly;
the high-voltage capacity-regulating driving mechanism comprises a high-voltage electromagnetic mechanism;
the high-voltage switching hanging assembly comprises a high-voltage vacuum arc extinguish chamber and a high-voltage breaking bracket assembly;
the high-voltage selection switch assembly comprises a high-voltage moving contact assembly and a high-voltage static contact assembly;
the low-voltage capacity-regulating driving mechanism comprises a low-voltage permanent magnet mechanism and a low-voltage linkage mechanism;
the low-voltage selection switch assembly comprises a low-voltage moving contact assembly and a low-voltage static contact assembly;
the low-voltage linkage mechanism is connected with the high-voltage moving contact component through a linkage rod;
the high-voltage electromagnetic mechanism drives the high-voltage breaking support assembly to act, the high-voltage breaking support assembly drives the vacuum arc extinguish chamber to act to complete loop switching, the low-voltage permanent magnetic mechanism drives the low-voltage linkage mechanism to act, the low-voltage linkage mechanism drives the low-voltage moving contact assembly to act, corresponding low-voltage static contacts in the low-voltage static contact assembly are selected to be electrically connected, the low-voltage linkage mechanism drives the high-voltage moving contact assembly to act through the linkage rod, corresponding high-voltage static contacts in the high-voltage static contact assembly are selected to be electrically connected, and the conversion of large capacity and small capacity is completed.
According to a preferred embodiment of the present invention, the high-voltage capacitance-adjusting driving mechanism and the low-voltage capacitance-adjusting driving mechanism sequentially drive the high-voltage switch assembly, the high-voltage selection switch assembly, and the low-voltage selection switch assembly to operate, so as to complete the conversion between large and small capacities.
According to a preferred embodiment of the present invention, the low-voltage interlocking mechanism is divided into an upper interlocking support and a lower interlocking support, the low-voltage moving contact assembly is mounted on the upper interlocking support and the lower interlocking support, the low-voltage static contact assembly includes a low-voltage static contact and a static contact integrated seat, the low-voltage static contact is mounted on the mounting motherboard through the static contact integrated seat, the upper interlocking support and the lower interlocking support are respectively located at upper and lower sides of the low-voltage static contact, a driving rod of the low-voltage permanent magnetic mechanism is connected with the upper interlocking mechanism and the lower interlocking mechanism to drive the driving rod to move so as to drive the low-voltage moving contact assembly to move, and a moving contact in the low-voltage moving contact assembly selects a corresponding low-voltage static contact to electrically connect.
According to a preferred embodiment of the present invention, the high-voltage moving contact assembly includes a high-voltage moving contact and a high-voltage moving contact support, and the high-voltage moving contact support is connected to the low-voltage linkage mechanism through the linkage rod; the high-voltage static contact component comprises a high-voltage static contact and a high-voltage static contact support, the high-voltage static contact is mounted on the high-voltage static contact support, the low-voltage linkage mechanism drives the high-voltage moving contact support to move, and the high-voltage moving contact support drives the high-voltage moving contact to select the corresponding high-voltage static contact to be electrically connected.
According to a preferred embodiment of the present invention, the high-voltage breaking support assembly includes a high-voltage breaking movable support, a high-voltage breaking static support, a breaking block, and a connecting block, wherein a moving contact of the high-voltage vacuum arc-extinguishing chamber is connected to the high-voltage breaking movable support through the breaking block, a static contact of the high-voltage vacuum arc-extinguishing chamber is connected to the high-voltage breaking static support through the connecting block, the high-voltage breaking static support is fixed to the metal mounting plate, the metal mounting plate is fixedly connected to the mounting main plate through a mounting stud, the high-voltage electromagnetic mechanism drives the high-voltage breaking movable support to move, and the high-voltage breaking movable support drives the moving contact of the high-voltage vacuum arc-extinguishing chamber to move, so as to complete the connection and disconnection of the high-voltage vacuum arc-extinguishing chamber.
According to a preferred embodiment of the present invention, the three-phase high-voltage selector switch assembly, the high-voltage selector switch assembly, and the low-voltage selector switch assembly are all linearly arranged on the metal mounting plate and the mounting main plate.
A capacitance-regulating transformer, characterized in that it adopts the capacitance-regulating transformer of the miniaturized capacitance-regulating switch of any one of the structures of the preceding claims.
Compared with the prior art, the capacity-adjusting transformer has the advantages that the capacity-adjusting transformer is driven by an electromagnetic mechanism to perform selection and switching, the capacity-adjusting transformer realizes the conversion of large and small capacities, is simple in structure and small in size (the capacity-adjusting transformer is installed in a distribution transformer, and the volume and the shape of the conventional distribution transformer are hardly changed), improves the operation reliability, reduces the production cost of the capacity-adjusting transformer for users, simultaneously, the capacity-adjusting transformer is switched by adopting the vacuum arc-extinguishing chambers in the capacity-adjusting process, avoids the influence on the performance of transformer insulating oil caused by arc discharge due to contact switching, and reduces the maintenance cost brought to the users due to oil.
Drawings
FIG. 1 is a schematic structural diagram A of a miniaturized capacitance-regulating switch according to the present invention;
FIG. 2 is a schematic structural diagram B of a miniaturized capacitance-regulating switch according to the present invention;
fig. 3 is a schematic structural diagram C of a miniaturized capacitance-regulating switch according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The embodiments described below are merely intended to more clearly illustrate the technical solutions of the present invention, are selected embodiments of the present invention, not all embodiments, and thus the scope of the present invention is not limited thereto. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Referring to fig. 1 to 3, the miniaturized capacity regulating switch of the present invention includes a high voltage capacity regulating driving mechanism 1, a high voltage switch assembly 2, a high voltage selection switch assembly 3, a low voltage capacity regulating driving mechanism 4, a low voltage selection switch assembly 5, a mounting base plate 6, and a metal mounting plate 7, wherein the high voltage capacity regulating driving mechanism 1 mainly includes a high voltage electromagnetic mechanism 1.1, the high voltage switching hanging assembly 2 includes a high voltage vacuum arc extinguish chamber 2.1 and a high voltage breaking support assembly 2.2, the high voltage selection switch assembly 3 includes a high voltage moving contact assembly 3.1 and a high voltage static contact assembly 3.2, the low voltage capacity regulating driving mechanism 4 includes a low voltage permanent magnetic mechanism 4.1 and a low voltage linkage mechanism 4.2, and the low voltage selection switch assembly 5 includes a low voltage moving contact assembly 5.1 and a low voltage static contact assembly 5.2.
The low-voltage linkage mechanism 4.2 is divided into an upper linkage support 4.2.1 and a lower linkage support 4.2.2, the low-voltage moving contact component 5.1 is arranged on the upper linkage support 4.2.1 and the lower linkage support 4.2.2, the low-voltage static contact component 5.2 comprises a low-voltage static contact 5.2.1 and a static contact integrated seat 5.2.2, the low-voltage static contact 5.2.1 is arranged on the installation base plate 6 through the static contact integrated seat 5.2.2, the upper linkage support 4.2.1 and the lower linkage support 4.2.2 are respectively positioned at the upper side and the lower side of the low-voltage static contact 5.2.1, and a driving rod of the low-voltage permanent magnet mechanism 4.1 is connected with the upper linkage mechanism 4.2.1 and the lower linkage mechanism 4.2.2.
The high-voltage moving contact component 3.1 comprises a high-voltage moving contact 3.1.1 and a high-voltage moving contact support 3.1.2, the high-voltage moving contact support 3.1.2 is connected with the low-voltage linkage mechanism 4.2 through a linkage rod 3.1.2.1 on the high-voltage moving contact support, the high-voltage static contact component 3.2 comprises a high-voltage static contact 3.2.1 and a high-voltage static contact support 3.2.2, and the high-voltage static contact 3.2.1 is installed on the high-voltage static contact support 3.2.2.
The high-voltage breaking bracket assembly 2.2 comprises a high-voltage breaking movable bracket 2.2.1, a high-voltage breaking static support 2.2.2, a breaking block 2.2.3 and a connecting block 2.2.4, a moving contact of the high-voltage vacuum arc-extinguishing chamber 2.1 is connected with the high-voltage breaking movable bracket 2.2.1 through the breaking block 2.2.3, a static contact of the high-voltage vacuum arc-extinguishing chamber 2.1 is connected with the high-voltage breaking static support 2.2.2 through the connecting block 2.2.4, the high-voltage breaking static support 2.2.2 is fixedly installed on a metal mounting plate 7, and the metal mounting plate 7 is fixedly connected with a mounting mainboard 6 through a plurality of fixing studs.
The high-voltage electromagnetic mechanism 1.1 drives the high-voltage breaking movable support 2.2.1 to act, and the high-voltage breaking movable support 2.2.1 drives the moving contact of the high-voltage vacuum arc-extinguishing chamber 2.1 to act, so that the high-voltage vacuum arc-extinguishing chamber 2.1 is switched on and off. The low-voltage permanent magnet mechanism 4.1 drives the low-voltage linkage mechanism 4.2 to act through the driving rod, the low-voltage linkage mechanism 4.2 drives the low-voltage moving contact component 5.1 thereon to act, the moving contact in the low-voltage moving contact component 5.1 selects the corresponding low-voltage static contact 5.2.1 to carry out electrical connection, meanwhile, the low-voltage linkage mechanism 4.2 drives the high-voltage moving contact support 3.1.2 to act through the linkage rod 3.1.2.1 on the high-voltage moving contact support 3.1.2, and the high-voltage moving contact support 7.1.2 drives the high-voltage moving contact 3.1.1 to select the corresponding high-voltage static contact 3.2.1 to carry out electrical connection, thereby completing the conversion of the large capacity and the small capacity.
The principle of the miniaturized capacitance-regulating switch of the invention is to adopt the conventional capacitance-regulating principle of star-delta conversion in the technical field, and the detailed description is not provided herein.
In summary, the miniaturized capacity-regulating switch adopts a linear design scheme as a whole, and the driving mechanisms drive the selection switch assembly and the change-over switch assembly to move linearly, so that the mechanical mechanism of the switch is greatly simplified, and the reliability of the switch is improved; meanwhile, all the components of the switch are arranged on one side of the same bottom plate and are combined in a linear arrangement mode, so that the spatial positions of the components are reasonable and compact, the size of the switch is greatly reduced, and the production cost of the switch and the production cost of a user capacity-adjusting transformer are reduced. Meanwhile, the switch adopts the vacuum arc extinguish chamber to switch gears, so that the influence of arc discharge on the performance of transformer insulating oil due to contact switching is avoided, the maintenance cost brought to users due to oil filtering and oil changing is reduced, the maintenance-free performance in the service life cycle of the switch is realized, and the switch is suitable for a large number of distribution transformers.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several changes and modifications can be made without departing from the mechanical action principle and structure of the present invention, and these changes and modifications should also be considered as the protection scope of the present invention.
Claims (7)
1. A miniaturized capacity regulating switch is used for a three-phase capacity regulating switch for regulating the capacity of a three-phase transformer and is characterized by comprising a high-voltage capacity regulating driving mechanism, a high-voltage change-over switch assembly, a high-voltage selection switch assembly, a low-voltage capacity regulating driving mechanism, a low-voltage selection switch assembly, an installation bottom plate and a metal installation plate;
the high-voltage selector switch assembly and the high-voltage selector switch assembly are arranged on the metal mounting plate; the low-voltage capacity-regulating driving mechanism and the low-voltage selection switch assembly are arranged on the mounting base plate;
the high-voltage capacity regulating driving mechanism is positioned on the upper side of the low-voltage capacity regulating mechanism, and the high-voltage selector switch assembly are positioned on the upper side of the low-voltage selector switch assembly;
the high-voltage capacity-regulating driving mechanism comprises a high-voltage electromagnetic mechanism;
the high-voltage switching hanging assembly comprises a high-voltage vacuum arc extinguish chamber and a high-voltage breaking bracket assembly;
the high-voltage selection switch assembly comprises a high-voltage moving contact assembly and a high-voltage static contact assembly;
the low-voltage capacity-regulating driving mechanism comprises a low-voltage permanent magnet mechanism and a low-voltage linkage mechanism;
the low-voltage selection switch assembly comprises a low-voltage moving contact assembly and a low-voltage static contact assembly;
the low-voltage linkage mechanism is connected with the high-voltage moving contact component through a linkage rod;
the high-voltage electromagnetic mechanism drives the high-voltage breaking support assembly to act, the high-voltage breaking support assembly drives the vacuum arc extinguish chamber to act to complete loop switching, the low-voltage permanent magnetic mechanism drives the low-voltage linkage mechanism to act, the low-voltage linkage mechanism drives the low-voltage moving contact assembly to act, corresponding low-voltage static contacts in the low-voltage static contact assembly are selected to be electrically connected, the low-voltage linkage mechanism drives the high-voltage moving contact assembly to act through the linkage rod, corresponding high-voltage static contacts in the high-voltage static contact assembly are selected to be electrically connected, and the conversion of large capacity and small capacity is completed.
2. The miniaturized capacity regulating switch according to claim 1, wherein the high voltage capacity regulating driving mechanism and the low voltage capacity regulating driving mechanism drive the high voltage switch assembly, the high voltage selection switch assembly and the low voltage selection switch assembly in a time sequence to complete the conversion of the large capacity and the small capacity.
3. The miniaturized capacity regulating switch according to claim 1, wherein the low voltage linkage mechanism is divided into an upper linkage bracket and a lower linkage bracket, the low voltage moving contact assembly is mounted on the upper linkage bracket and the lower linkage bracket, the low voltage static contact assembly comprises a low voltage static contact and a static contact integrated base, the low voltage static contact is mounted on the mounting main board through the static contact integrated base, the upper linkage bracket and the lower linkage bracket are respectively located at the upper side and the lower side of the low voltage static contact, a driving rod of the low voltage permanent magnetic mechanism is connected with the upper linkage mechanism and the lower linkage mechanism to drive the low voltage moving contact assembly to move, and a moving contact in the low voltage moving contact assembly selects a corresponding low voltage static contact for electrical connection.
4. The miniaturized capacitance-regulating switch according to claim 1, wherein the high-voltage moving contact component comprises a high-voltage moving contact and a high-voltage moving contact support, and the high-voltage moving contact support is connected with the low-voltage linkage mechanism through the linkage rod; the high-voltage static contact component comprises a high-voltage static contact and a high-voltage static contact support, the high-voltage static contact is mounted on the high-voltage static contact support, the low-voltage linkage mechanism drives the high-voltage moving contact support to move, and the high-voltage moving contact support drives the high-voltage moving contact to select the corresponding high-voltage static contact to be electrically connected.
5. The miniaturized capacity-regulating switch according to claim 1, wherein the high-voltage breaking support assembly comprises a high-voltage breaking movable support, a high-voltage breaking static support, a breaking block and a connecting block, a moving contact of the high-voltage vacuum arc-extinguishing chamber is connected with the high-voltage breaking movable support through the breaking block, a static contact of the high-voltage vacuum arc-extinguishing chamber is connected with the high-voltage breaking static support through the connecting block, the high-voltage breaking static support is fixedly mounted on the metal mounting plate, the metal mounting plate is fixedly connected with the mounting main plate through a mounting stud, the high-voltage electromagnetic mechanism drives the high-voltage breaking movable support to act, the high-voltage breaking movable support drives the moving contact of the high-voltage vacuum arc-extinguishing chamber to act, and the high-voltage vacuum arc-extinguishing chamber is switched on and off.
6. The miniaturized capacity-regulating switch according to claim 1, wherein the three-phase high-voltage switch assembly, the high-voltage selection switch assembly and the low-voltage selection switch assembly are all linearly arranged on the metal mounting plate and the mounting main plate.
7. A capacitance-regulating transformer, characterized in that it adopts the capacitance-regulating transformer of the miniaturized capacitance-regulating switch of any one of the structures of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262871.6A CN113345731A (en) | 2020-04-07 | 2020-04-07 | Miniaturized capacitance-regulating switch and capacitance-regulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262871.6A CN113345731A (en) | 2020-04-07 | 2020-04-07 | Miniaturized capacitance-regulating switch and capacitance-regulating transformer |
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| Publication Number | Publication Date |
|---|---|
| CN113345731A true CN113345731A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010262871.6A Pending CN113345731A (en) | 2020-04-07 | 2020-04-07 | Miniaturized capacitance-regulating switch and capacitance-regulating transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524789A (en) * | 2024-01-08 | 2024-02-06 | 山东民生电气设备有限公司 | Capacitor switching switch |
-
2020
- 2020-04-07 CN CN202010262871.6A patent/CN113345731A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117524789A (en) * | 2024-01-08 | 2024-02-06 | 山东民生电气设备有限公司 | Capacitor switching switch |
| CN117524789B (en) * | 2024-01-08 | 2024-05-24 | 山东民生电气设备有限公司 | Capacitor switching switch |
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