CN113192789B - Column isolating switch and wiring terminal thereof - Google Patents
Column isolating switch and wiring terminal thereof Download PDFInfo
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- CN113192789B CN113192789B CN202110314803.4A CN202110314803A CN113192789B CN 113192789 B CN113192789 B CN 113192789B CN 202110314803 A CN202110314803 A CN 202110314803A CN 113192789 B CN113192789 B CN 113192789B
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- vertical conductive
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
Abstract
The invention relates to a pole-mounted isolating switch and a connecting terminal thereof, wherein the pole-mounted isolating switch comprises: the terminal comprises a vertical conductive plate and a terminal conductive plate section, wherein the terminal conductive plate section comprises a vertical plate section and an upper transverse plate section which are connected in an L-shaped bending manner, the vertical conductive plate is vertically arranged on the right side surface of the vertical plate section in a conductive manner, the top end of the vertical conductive plate is lower than the upper transverse plate section, and current flows from the isolation knife gate to the upper transverse plate section through the vertical conductive plate and the vertical plate section; and the upper transverse plate section is used as an output end of the column isolating switch to be fixedly assembled with the corresponding conductive bar. After the current on the isolation disconnecting link flows to the vertical plate section through the vertical conductive plate, the current on the vertical plate section flows upwards to the upper transverse plate section, the isolation disconnecting link receives downward ampere force under the magnetic field generated by the vertical plate section, and the larger the current is, the larger the isolation disconnecting link receives downward ampere force, so that the situation that the knife retreats upwards when passing through the current can be effectively avoided.
Description
Technical Field
The invention belongs to the technical field of isolating switches, and particularly relates to an on-column isolating switch and a wiring terminal thereof.
Background
As shown in fig. 1 to 3, a structure of a conventional outdoor high-voltage ac vacuum circuit breaker with a lower isolating switch in the market is shown in fig. 1 to 3, a pull rod assembly 12 and a post insulator 14 are arranged on a frame welding 13 of the post isolating switch at intervals, a isolating knife switch 11 is movably assembled on the top of the pull rod assembly 12, a connecting terminal 15 is fixedly arranged on the top of the post insulator 14, the connecting terminal is approximately L-shaped in whole and comprises a bottom conducting plate 152 and a vertical conducting plate 151, the bottom conducting plate 152 is transversely arranged, the rear end is a fixed end, the front end is a overhanging end, the fixed end is fixedly connected with the post insulator 14, the overhanging end is fixedly connected with a conductive copper bar, a vertical conducting plate 151 is arranged at the middle position of the upper side surface of the fixed end of the bottom conducting plate 152, when the isolating knife switch 11 swings from top to bottom to a joint position, a blade on the isolating knife switch 11 is attached to the vertical side surface of the vertical conducting plate 151, and thus, a magnetic field generated by the vertical conducting plate can generate upward ampere force the isolating knife switch 11 to move upwards away from the bottom conducting plate 152. Due to the action of gravity, the isolating knife switch 11 is generally not separated from the vertical conductive plate 151 when normal current passes through, but the short-time withstand current and peak withstand current test is a necessary test of the on-column switch, reflecting the capacity of the circuit breaker to bear electric power, and when the short-time withstand current and peak withstand current test is carried out, the high current can cause the isolating knife switch to obviously retract upwards, so that the normal test and normal work are affected.
For the outdoor high-voltage alternating current vacuum circuit breaker with a disconnecting switch, when short-time withstand current and peak withstand current tests are carried out, large electric repulsive force is generated between the disconnecting switch and the disconnecting terminal due to large current, upward withdrawal is easy to occur, and damage phenomena such as mechanical impact, damage arc and fusion welding are caused, so that normal tests are influenced, normal operation of a power system is also influenced when serious damage is caused, and injury accidents of personnel around equipment are also easy to cause.
Disclosure of Invention
The invention aims to provide a wiring terminal of a pole-mounted isolating switch, which solves the technical problem that in the prior art, the disconnecting link is easy to retract when a large current passes through due to the existence of electric repulsive force between the electrified isolating wiring terminal and an isolating disconnecting link. Meanwhile, the invention also provides the pole-mounted isolating switch using the wiring terminal, so as to solve the technical problems that the normal test and the work are affected due to the fact that the isolating switch is retracted when short-time withstand current and peak withstand current tests are carried out in the prior art.
In order to achieve the above purpose, the technical scheme of the wiring terminal of the column isolating switch provided by the invention is as follows: a post isolator's binding post for fixed mounting on post isolator's post insulator includes:
the vertical conductive plates extend along the up-down direction, and the front side surface and the rear side surface of the vertical conductive plates are vertical conductive side surfaces and are used for being attached to the isolation disconnecting link to conduct current when the isolation disconnecting link of the isolating switch on the column swings from top to bottom to the joint position;
the terminal conductive plate section comprises a vertical plate section and an upper transverse plate section which are connected in an L-shaped bending manner, and the upper transverse plate section is positioned at the left side of the vertical plate section;
the vertical conductive plate is vertically arranged on the right side surface of the vertical plate section, which is opposite to the upper transverse plate section, and the top end of the vertical conductive plate is lower than the upper transverse plate section, so that current flows from the isolation disconnecting link to the upper transverse plate section through the vertical conductive plate and the vertical plate section;
the upper transverse plate section is used as an output end of the column isolating switch to be fixedly assembled with the corresponding conductive bar.
The beneficial effects are that: according to the wiring terminal of the on-column disconnecting link, the vertical conductive plate is directly and vertically arranged on the right side face of the vertical plate section of the terminal conductive plate section, so that after current on the disconnecting link flows to the vertical plate section through the vertical conductive plate, the current on the vertical plate section flows upwards to the upper transverse plate section, the disconnecting link receives downward ampere force under the magnetic field generated by the vertical plate section, and the larger the current is, the larger the downward ampere force is received by the disconnecting link, and the situation that the disconnecting link retreats upwards when the current passes can be effectively avoided.
As a further refinement, the vertical conductive plates are arranged perpendicular to the vertical plate sections.
The beneficial effects are that: the vertical conducting plates are arranged perpendicular to the vertical plate sections, so that ampere force applied to the isolation disconnecting link is large.
As a further refinement, the vertical conductive plates are arranged correspondingly in the middle position of the vertical plate sections.
The beneficial effects are that: the vertical conductive plate is correspondingly positioned at the middle position of the vertical plate section, so that the processing is convenient, and the stress of the isolating disconnecting link can be optimized.
As a further improvement, the wiring terminal further comprises a lower fixing plate section for being fixedly assembled on the post insulator of the on-post disconnecting switch, wherein the lower fixing plate section is positioned on the lower sides of the vertical plate section and the vertical conductive plate and is integrally or separately connected with the vertical conductive plate.
The beneficial effects are that: the grounding terminal comprises a lower fixing plate section, so that the grounding terminal is conveniently and fixedly installed on the post insulator, and the lower fixing plate section and the vertical conductive plate are integrally or separately connected, so that the vertical conductive plate can be supported, and the strength of the vertical conductive plate is improved.
As a further improvement, the lower fixed plate section and the vertical plate section are connected in an L-shaped bending manner.
The beneficial effects are that: the lower fixed plate section and the vertical plate section are connected in a bending way, so that the structure is simple, and the processing and the manufacturing are convenient.
The technical scheme of the column isolating switch using the wiring terminal provided by the invention is as follows: an on-pole disconnector comprising:
the wiring terminal is fixedly arranged at the top end of the post insulator and is provided with a vertical conductive plate extending along the up-down direction, and the front side surface and the rear side surface of the vertical conductive plate are vertical conductive side surfaces;
the isolating knife switch can swing back and forth in the up-down direction and is attached to the side surface of the vertical conducting plate to conduct current when swinging to the joint position from top to bottom;
the terminal also includes:
the terminal conductive plate section comprises a vertical plate section and an upper transverse plate section which are connected in an L-shaped bending manner, and the upper transverse plate section is positioned at the left side of the vertical plate section;
the vertical conductive plate is vertically arranged on the right side surface of the vertical plate section, which is opposite to the upper transverse plate section, and the top end of the vertical conductive plate is lower than the upper transverse plate section, so that current flows from the isolation disconnecting link to the upper transverse plate section through the vertical conductive plate and the vertical plate section;
the upper transverse plate section is used as an output end of the column isolating switch to be fixedly assembled with the corresponding conductive bar.
The beneficial effects are that: according to the wiring terminal of the on-column disconnecting link, the vertical conductive plate is directly and vertically arranged on the right side face of the vertical plate section of the terminal conductive plate section, so that after current on the disconnecting link flows to the vertical plate section through the vertical conductive plate, the current on the vertical plate section flows upwards to the upper transverse plate section, the disconnecting link receives downward ampere force under the magnetic field generated by the vertical plate section, the larger the current is, the larger the downward ampere force is received by the disconnecting link, the situation that the disconnecting link is retracted upwards when the current passes can be effectively avoided, and the problem that normal test and work are influenced due to the fact that the disconnecting link is retracted upwards when short-time withstand current and peak withstand current test are conducted can be guaranteed.
As a further refinement, the vertical conductive plates are arranged perpendicular to the vertical plate sections.
The beneficial effects are that: the vertical conducting plates are arranged perpendicular to the vertical plate sections, so that ampere force applied to the isolation disconnecting link is large.
As a further refinement, the vertical conductive plates are arranged correspondingly in the middle position of the vertical plate sections.
The beneficial effects are that: the vertical conductive plate is correspondingly positioned at the middle position of the vertical plate section, so that the vertical conductive plate is convenient to process and can optimally isolate and find the stress.
As a further improvement, the wiring terminal further comprises a lower fixing plate section for being fixedly assembled on the post insulator of the on-post disconnecting switch, wherein the lower fixing plate section is positioned on the lower sides of the vertical plate section and the vertical conductive plate and is integrally or separately connected with the vertical conductive plate.
The beneficial effects are that: the grounding terminal comprises a lower fixing plate section, so that the grounding terminal is conveniently and fixedly installed on the post insulator, and the lower fixing plate section and the vertical conductive plate are integrally or separately connected, so that the vertical conductive plate can be supported, and the strength of the vertical conductive plate is improved.
As a further improvement, the lower fixed plate section and the vertical plate section are connected in an L-shaped bending manner.
The beneficial effects are that: the lower fixed plate section and the vertical plate section are connected in a bending way, so that the structure is simple, and the processing and the manufacturing are convenient.
Drawings
FIG. 1 is a schematic diagram of a conventional on-column disconnector;
fig. 2 is a schematic structural view of the connection terminal in fig. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic diagram of a column-mounted disconnecting switch according to the present invention;
FIG. 5 is a schematic view of the terminal block of FIG. 4;
FIG. 6 is a front view of FIG. 5;
FIG. 7 is a right side view of FIG. 5;
fig. 8 is a schematic view of the isolation blade of fig. 4 in a magnetic field generated by a vertical conductive plate segment (arrows indicate current flow direction across the vertical conductive plate segment and isolation blade).
Reference numerals illustrate:
in fig. 1 to 3: 11. isolating the knife switch; 12. assembling a pull rod; 13. welding a frame; 14. a post insulator; 15. a connection terminal; 151. a vertical conductive plate; 152. a bottom conductive plate.
Fig. 4 to 8: 1. isolating the knife switch; 2. assembling a pull rod; 3. welding a frame; 4. a post insulator; 5. a connection terminal; 51. an upper transverse plate section; 52. a vertical plate section; 53. a vertical conductive plate; 54. a lower fixed plate section; 510. a threaded hole; 540. the slot is fixed.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" is not intended to exclude processes, methods comprising such element.
In the description of the present invention, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the term "provided" may be interpreted broadly, and for example, an object "provided" may be a part of a body, may be separately disposed from the body, and may be connected to the body, where the connection may be a detachable connection or an undetachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art in specific cases.
The present invention is described in further detail below with reference to examples.
the embodiment provides a post isolator, can stabilize and bear electric current and peak value and bear electric current test, work in short time, avoid appearing upwards withdrawing the sword and influence isolator normal test, technical problem of work because of electric repulsion, improved experiment, staff's security simultaneously.
The structure of the column isolating switch in this embodiment is shown in fig. 4 to 8, wherein the isolating switch 1 is hinged with the pull rod assembly 2, so that the isolating switch 1 can swing reciprocally in the up-down direction and contact with the connecting terminal 5 when swinging from top to bottom to the joint position, so as to realize current conduction.
The pull rod assembly 2 is assembled on a frame welding 13 at the lower end of the isolating switch, and a post insulator 4 is also fixed on the frame welding 13 of the isolating switch and used for supporting and installing the wiring terminal 5.
The terminal 5 is generally in a "Z" configuration and includes a terminal conductive plate section and a lower fixed plate section 54.
The terminal conductive plate section comprises a vertical plate section 52 and an upper transverse plate section 51, wherein the upper transverse plate section 51 is connected with the vertical plate section 52 in an L-shaped bending mode, the upper transverse plate section 51 is positioned on the left side of the vertical plate section 52, the upper transverse plate section 51 extends along the horizontal direction and serves as an output end of the column isolating switch, a threaded hole 510 is formed in the upper transverse plate section 51, and when the terminal conductive plate section is specifically assembled, the terminal conductive plate section is fixedly assembled with a corresponding conductive bar through the threaded hole 510.
The vertical plate section 52 is perpendicular to the upper transverse plate section 51 and is arranged on the right side of the upper transverse plate section 51 and is used for conveying current upwards to the upper transverse plate section 51, the vertical plate section 52 is electrically connected with the vertical conductive plate 53 in a conductive mode, the vertical conductive plate 53 is arranged on the right side face, facing away from the upper transverse plate section 51, of the vertical plate section 52 in a conductive mode, the vertical conductive plate 53 is perpendicular to the vertical plate section 52, the vertical conductive plate 53 is correspondingly located at the middle position of the vertical plate section 52, and the top end of the vertical conductive plate 53 is lower than the upper transverse plate section 51.
For the isolation disconnecting link 1, the front and rear sides of the vertical conductive plate 53 are vertical conductive sides, and when the isolation disconnecting link 1 swings from top to bottom to the joint position, the blades on the two sides of the isolation disconnecting link 1 are in conductive fit with the vertical conductive sides, so that current flows upwards from the isolation disconnecting link 1 to the upper transverse plate section through the vertical conductive plate 53 and the vertical plate section 52.
The lower fixed plate section 54 of the wiring terminal 5 is integrally connected with the bottom of the vertical guide plate 53, and the lower fixed plate section 51 is connected with the vertical plate section 52 in an L-shaped bending manner, the lower fixed plate section 54 is positioned on the lower sides of the vertical plate section 52 and the vertical conductive plate 53, the lower fixed plate 54 is fixedly assembled on the post insulator 4 of the on-post isolating switch through the fixed slot 540, the fixed slot is of a long hole structure, and the fixed slot is convenient to move and adjust during installation so as to ensure effective joint of the isolating switch 1 and the wiring terminal 1.
When the column isolating switch is used, the isolating switch 1 is closed, the isolating switch 1 is attached to the vertical conducting plate 53, so that current flows from the isolating switch 1 to the upper transverse plate section 1 through the vertical conducting plate 53 and the vertical plate section 52, and finally, the upper transverse plate section 51 serves as an output end to convey the current to the corresponding conducting bars.
In this embodiment, the connection terminal 5 is made of pure copper and is externally tinned, and can be integrally welded in a split manner, however, in other embodiments, the connection terminal can be integrally formed.
As shown in fig. 8, the current direction on the vertical plate section 52 is vertically upward, at this time, the vertical plate section 52 is used as an energized conductor, a magnetic field is generated in the annular space around the vertical plate section 52, the right hand rule judges that the magnetic field direction is counterclockwise (seen from top to bottom) around the vertical plate section 52, the isolating knife switch 1 is located in the right side magnetic field generated by the vertical plate section 52, and because the isolating knife switch 1 also has current passing through at this time, the current on the isolating knife switch is horizontal to the right, as shown by the arrow in fig. 8, the isolating knife switch 1 is judged according to the left hand rule, and can be subjected to downward ampere force in the magnetic field as an energized conductor, so that the isolating knife switch 1 is forced to swing downwards, even if a large current passes, accidents of upward withdrawal can not occur, and therefore, the stability of current tolerance and peak current tolerance experiments and work of the isolating switch on a column can be effectively ensured.
the differences from example 1 are mainly that: in embodiment 1, the vertical conductive plate is located at an intermediate position of the vertical plate section. In this embodiment, the vertical conductive plate may also be located at a position where the vertical plate section is biased to one side, and is no longer centrally arranged.
the differences from example 1 are mainly that: in embodiment 1, the vertical conductive plates are arranged perpendicular to the right side face of the vertical plate section. In this embodiment, the vertical conductive plates may also be arranged obliquely on the right side face of the vertical plate section.
Specific embodiment 4 of the column isolation switch provided by the invention:
the differences from example 1 are mainly that: in embodiment 1, set up lower part connecting plate section in binding post bottom, can strengthen vertical conducting plate intensity, the fixed assembly with the pillar insulator of convenient realization again, can also play the effect of stopping the isolation switch. In this embodiment, the lower connection plate section is only used for connection with the post insulator and no longer with the vertical conductive plate.
The structure of the connecting terminal of the pole-mounted isolating switch provided by the invention is the same as that of the connecting terminal of the pole-mounted isolating switch embodiment 1, and the description is omitted here. Of course, in other embodiments, the connection terminal in any of the embodiments 2 to 4 of the pole-mounted disconnecting switch may also be used, and will not be described herein.
It should be noted that the above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, but may be modified without inventive effort or equivalent substitution of some technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A post isolator's binding post for fixed mounting on post isolator's post insulator includes:
the vertical conductive plates (53) extend along the up-down direction, and the front side surface and the rear side surface of the vertical conductive plates (53) are vertical conductive side surfaces and are used for being attached to the isolation disconnecting link (1) to conduct current when the isolation disconnecting link (1) of the on-column isolation switch swings from top to bottom to the joint position;
characterized by further comprising:
the terminal conductive plate section comprises a vertical plate section (52) and an upper transverse plate section (51) which are connected in an L-shaped bending manner, and the upper transverse plate section (51) is positioned at the left side of the vertical plate section (52);
the vertical conductive plate (53) is vertically arranged on the right side surface of the vertical plate section (52) facing away from the upper transverse plate section (51), the left side surface of the vertical conductive plate (53) is directly attached to the vertical plate section (52), the top end of the vertical conductive plate (53) is lower than the upper transverse plate section (51), and the size of the right side surface of the vertical plate section (52) in the front-rear direction is larger than the size of the left side surface of the vertical conductive plate (53) in the front-rear direction, so that current flows from the isolation disconnecting link to the upper transverse plate section through the vertical conductive plate (53) and the vertical plate section (52);
the upper transverse plate section (51) is used as an output end of the column isolating switch to be fixedly assembled with the corresponding conducting bar;
the vertical conductive plates (53) are arranged perpendicular to the vertical plate sections (52);
the vertical conductive plates (53) are correspondingly arranged at the middle positions of the vertical plate sections (52);
the wiring terminal further comprises a lower fixing plate section (54) which is used for being fixedly assembled on a post insulator of the on-post isolating switch, and the lower fixing plate section (54) is positioned on the lower sides of the vertical plate section (52) and the vertical conductive plate (53) and is connected with the vertical conductive plate (53).
2. Terminal of a pole-mounted disconnector according to claim 1, characterized in that the lower fixed plate section (54) is connected integrally or separately to the vertical conductive plate (53).
3. The terminal of the pole-mounted disconnector according to claim 2, characterized in that the lower fixed plate section (54) and the vertical plate section (52) are connected in an L-shaped bend.
4. An on-pole disconnector comprising:
the wiring terminal is fixedly arranged at the top end of the post insulator and is provided with a vertical conductive plate (53) extending along the up-down direction, and the front side surface and the rear side surface of the vertical conductive plate (53) are vertical conductive side surfaces;
the isolating disconnecting link (1) can swing back and forth in the up-down direction and is attached to the side surface of the vertical conducting plate (53) to conduct current when swinging to the joint position from top to bottom;
the wiring terminal is characterized by further comprising:
the terminal conductive plate section comprises a vertical plate section (52) and an upper transverse plate section (51) which are connected in an L-shaped bending manner, and the upper transverse plate section (51) is positioned at the left side of the vertical plate section (52);
the vertical conductive plate (53) is vertically arranged on the right side surface of the vertical plate section (52) facing away from the upper transverse plate section (51), the left side surface of the vertical conductive plate (53) is directly attached to the vertical plate section (52), the top end of the vertical conductive plate (53) is lower than the upper transverse plate section (51), the size of the right side surface of the vertical plate section (52) in the front-back direction is larger than the size of the left side surface of the vertical conductive plate (53) in the front-back direction, so that current flows from the isolation disconnecting link (1) to the upper transverse plate section (51) through the vertical conductive plate (53) and the vertical plate section (52);
the upper transverse plate section (51) is used as an output end of the column isolating switch to be fixedly assembled with the corresponding conducting bar;
the vertical conductive plates (53) are arranged perpendicular to the vertical plate sections (52);
the vertical conductive plates (53) are correspondingly arranged at the middle positions of the vertical plate sections (52);
the wiring terminal further comprises a lower fixing plate section (54) which is used for being fixedly assembled on a post insulator of the on-post isolating switch, and the lower fixing plate section (54) is positioned on the lower sides of the vertical plate section (52) and the vertical conductive plate (53) and is connected with the vertical conductive plate (53).
5. The pole-mounted disconnector according to claim 4, characterized in that said lower fixed plate section (54) is connected integrally or separately to said vertical conductive plate (53).
6. The pole-mounted disconnector according to claim 5, characterized in that the lower fixed plate section (54) and the vertical plate section (52) are connected in an L-shaped bend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110314803.4A CN113192789B (en) | 2021-03-24 | 2021-03-24 | Column isolating switch and wiring terminal thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110314803.4A CN113192789B (en) | 2021-03-24 | 2021-03-24 | Column isolating switch and wiring terminal thereof |
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| CN113192789A CN113192789A (en) | 2021-07-30 |
| CN113192789B true CN113192789B (en) | 2023-05-12 |
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| CA1179757A (en) * | 1982-01-08 | 1984-12-18 | William F. Olashaw | Insulating-isolating barrier system for electrical distribution equipment buswork |
| EP0145990A2 (en) * | 1983-12-19 | 1985-06-26 | Westinghouse Electric Corporation | Circuit breaker with improved cross-bar and contact assembly |
| EP1575067A1 (en) * | 2004-03-10 | 2005-09-14 | Areva T&D S.p.A. | Pivoting earthing switch with direct insertion and simple movement |
| EP2581923A1 (en) * | 2011-10-11 | 2013-04-17 | Schneider Electric Industries SAS | Mounting member for a contact of an isolation switch in a current distribution cell |
| CN205050756U (en) * | 2015-10-13 | 2016-02-24 | 武汉长海电气科技开发有限公司 | Big galvanic isolation switch contact structure |
| CN205582801U (en) * | 2016-04-15 | 2016-09-14 | 厦门理工学院 | Isolator earthing knife -switch in cubical switchboard |
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| CN113192789A (en) | 2021-07-30 |
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