CN103137371A - Earthing switch device - Google Patents
Earthing switch device Download PDFInfo
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- CN103137371A CN103137371A CN2012105643732A CN201210564373A CN103137371A CN 103137371 A CN103137371 A CN 103137371A CN 2012105643732 A CN2012105643732 A CN 2012105643732A CN 201210564373 A CN201210564373 A CN 201210564373A CN 103137371 A CN103137371 A CN 103137371A
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Abstract
The invention provides an earthing switch device which can be switched between a separating brake state and an on-position state. The earthing switch device comprises an underframe (1), at least one pair of fixed contacts (2), at least one pair of movable contacts (3), a main shaft (4), a connecting lever part (7) and a shield part (6), and the main shaft (4) is arranged on the underframe (1) in a rotating mode. The connecting lever part (7) is used for fixed installation of the movable contacts (3) on the main shaft (4). The shape and/or arrangement of the shield part (6) allows the earthing switch device to shield the connecting lever part (7) under the separating brake state, opposite to the static contacts (2). The earthing switch device can at least eliminate top electric field between the fixed contacts (2) and the connecting lever part (7), and improves evenness of electric field of the earthing switch device.
Description
Technical field
The present invention relates to the indoor high-voltage AC ground switch field, relate in particular to the more uniform Grunding switch gear device of electric field.
Background technology
Power distribution cabinet is to connect, disconnect and protect supply line and realize the equipment of disengagement failure circuit with Cooperation with Relay.Usually be equipped with earthed switch in power distribution cabinet, when supply line or equipment breaks down and during in normal maintenance, earthed switch must be closed a floodgate, thereby ensure personal safety.In supply line, only just think safe after earthed switch closes a floodgate.
In prior art, although known earthed switch can correctly be carried out required function, but still existent defect and area for improvement.In fact in a lot of situations, they have and are not suitable for the structure of guaranteeing the earthed switch optimization function.For example, more existing indoor high-voltage AC ground switch devices exist electric field inhomogeneous, cause point discharge phenomenon, and especially cutting-edge structure causes because connecting lever spare has towards an end of fixed contact under gate-dividing state for this.And in existing Grunding switch gear device, if underframe spare has thin-wall construction, it also easily causes producing fixed contact for the most advanced and sophisticated electric field of this thin-wall construction when separating brake, has weakened thus field uniformity.
Therefore, the current Grunding switch gear device that field uniformity, structural compactness and withstand voltage level are improved exists and needs.
Summary of the invention
An object of the present invention is to provide the uniform Grunding switch gear device of a kind of electric field, it can eliminate the most advanced and sophisticated electric field that produces at least between connecting lever spare and fixed contact when separating brake.
For achieving the above object, the invention provides a kind of Grunding switch gear device, it can be changed between gate-dividing state and "on" position, and comprises: underframe; At least one pair of fixed contact and moving contact; Rotatably be arranged on the main shaft on this underframe; Connecting lever spare, be used for moving contact is fixedly mounted on this main shaft, wherein, this Grunding switch gear device also comprises shielding part, the shape of this shielding part and/or layout allow to cover this connecting lever spare with respect to this fixed contact when this Grunding switch gear device is in gate-dividing state, avoid thus the most advanced and sophisticated electric field that produces at least under gate-dividing state, thereby improve the withstand voltage level of this Grunding switch gear device between this fixed contact and this connecting lever spare.
According to a preferred version of the present invention, this shielding part is configured to U-shaped plate, the outer surface that this U-shaped plate has base plate and two side plates and is configured to this base plate when this Grunding switch gear device is in gate-dividing state is towards this fixed contact, and connecting lever spare is between two side plates of U-shaped plate.Its part towards fixed contact should be appreciated that shielding part also can have other version, as long as can be covered connecting lever spare with respect to fixed contact.
according to a scheme of the present invention, Grunding switch gear device is the earthed switch that is applicable to three-phase alternating current, it comprises three pairs of fixed contacts and moving contact for this reason, wherein, this underframe can comprise and is arranged to respectively at least two foundation unit of arranging near at least two moving contacts in three moving contacts, each foundation unit comprises the first underframe spare and the second underframe spare that is arranged in connecting lever spare both sides, the first underframe spare and the second underframe spare all have substrate, be provided with at an end of this substrate and be suitable for the perforate that this main shaft passes, and this this basic end has kink, this kink be configured to its when this Grunding switch gear device is in gate-dividing state with its lateral surface towards described fixed contact.It will be appreciated by those skilled in the art that, the underframe in the present invention is not limited to this structure, as long as the edge towards a side of fixed contact of this underframe has larger surface in order to avoid produces most advanced and sophisticated electric field.
In a preferred version of the present invention, the first underframe spare and the second underframe spare are structurally mutually axially symmetrical, and are arranged symmetrically in the both sides of connecting lever spare, and this kink advantageously extends perpendicular to this substrate.The development length of kink on the main-shaft axis direction is 20mm to 30mm.
According to a preferred version of the present invention, this underframe comprises and is arranged to respectively two foundation unit of arranging near two moving contacts that are positioned at both sides in three moving contacts.It will be appreciated by those skilled in the art that, for the Grunding switch gear device that is applicable to three-phase alternating current, underframe has a foundation unit, and perhaps three foundation unit are also feasible.For example, when a foundation unit was set, this foundation unit can be arranged near middle moving contact.
Preferably, each underframe spare and each U-shaped plate are configured to, when this Grunding switch gear device was in gate-dividing state, the lateral surface towards fixed contact towards the substrate of the lateral surface of fixed contact and each U-shaped plate of the kink of each described underframe spare was in same plane.Such configuration can make the electric field of Grunding switch gear device more even.
For making electric field more even, in a preferred version of the present invention, the two ends that are not connected with its biside plate of the base plate of U-shaped plate are respectively equipped with the extension section towards the open end bending of U-shaped plate, and the angle of described extension section and base plate is 155 °-165 °, is preferably 160 °.Advantageously, the length of this extension section can be 15mm-25mm, is preferably 20mm.
According to a scheme of the present invention, kink is 20mm-30mm along the length of the direction of main-shaft axis, be preferably 20mm, and kink may be selected to the base plate of U-shaped plate along the length perpendicular to the direction of main-shaft axis basically identical along the length perpendicular to the axis direction of described main shaft.
In order to increase the withstand voltage level of the Grunding switch gear device in the present invention, in a preferred version of the present invention, be coated with epoxy resin at least on the lateral surface of described fixed contact at the kink of each underframe spare.
According to a preferred version of the present invention, each shielding part for example U-shaped plate base plate at least on the lateral surface of described fixed contact, be coated with epoxy resin.
In a preferred scheme, the kink of each underframe spare at least on the lateral surface of described fixed contact and each shielding part as the base plate of U-shaped plate at least towards as described in be coated with epoxy resin on the lateral surface of fixed contact.Those of ordinary skills are understood that, for the epoxy resin that makes coating more firm, and can not peel off in use for some time, can be when applying epoxy resin with the coated area of epoxy resin extend to the lateral surface of kink and base plate adjacent surface on.In the present invention, epoxy resin can be coated on respective surfaces by heating repeatedly painting way, and coating layer thickness is generally 1.5mm-2mm.After applying, voltage withstand class can increase 30kV-40kV.Should be appreciated that other suitable coating method is also feasible.
In the present invention, compare with Grunding switch gear device of the prior art, namely increase kink in the side towards fixed contact of underframe by the underframe profile of setting up shielding part such as U-shaped plate at the moving contact place and perhaps also changing earthed switch, change and control the electrical field shape at moving contact place, most advanced and sophisticated electric field is changed over flat field, played uniform electric field, the insulation level of lifting Grunding switch gear device and the effect of increase withstand voltage level.Further, by the base plate of the kink of underframe spare and U-shaped plate apply epoxy resin on the side of fixed contact, play the effect of further reinforced insulation ability and withstand voltage effect.
Description of drawings
Describe the present invention in detail below with reference to accompanying drawing, wherein:
Fig. 1 is the perspective view of Grunding switch gear device according to an embodiment of the invention, and wherein moving contact and fixed contact are in "on" position;
Fig. 2 is that Grunding switch gear device shown in Figure 1 is in the schematic diagram of gate-dividing state at moving contact and fixed contact;
Fig. 3 is for according to the underframe of Grunding switch gear device of the present invention and the combination schematic diagram of U-shaped plate, wherein other parts of not shown Grunding switch gear device for clarity sake.
In this specification and accompanying drawing, represent identical or similar feature or element with identical Reference numeral.
The Reference numeral list
The 1-underframe; 1a-the first underframe spare; 1b-the second underframe spare; The substrate of 1c-underframe spare; The kink of 1d-underframe spare; The installation portion section of 11-underframe spare; The 2-fixed contact; The 3-moving contact; The 4-main shaft; The 5-spring; The 6-U template; The base plate of 6a-U template; The side plate of 6b-U template; The extension section of 6c-U template; 7-connecting lever spare; 8-short circuit sleeve pipe; 9-ground connection annealed copper wire.
Embodiment
Refer now to the following description and accompanying drawing, describe example embodiment of the present invention in detail.The application's accompanying drawing is not exclusively to draw by the actual size of specific embodiment, and the variation aspect size all should not be construed as and makes limitation of the present invention.
Mention concrete size range in this specification and be only the exemplary range for Grunding switch gear device commonly used in prior art; but do not consist of the restriction to protection scope of the present invention; according to concrete application scenario and needs, can use the size outside these number ranges.
Fig. 1 shows the perspective view according to an exemplary embodiment of Grunding switch gear device of the present invention, and here, moving contact 3 and fixed contact 2 are in "on" position as shown in Figure 1.For the sake of clarity, do not draw the structure for fixed installation fixed contact 2 in Fig. 1, because this is known for those of ordinary skills, so, will repeat no more in this article.In addition, Grunding switch gear device in the embodiment shown in fig. 1 is split type earthed switch, is suitable for use in the three-phase ac power system.Install although Grunding switch gear device as shown in the figure is level, be to be understood that this Grunding switch gear device also can vertically be installed or tilt to install, and should make the main shaft rotational angle be not less than 95 degree with the supporting operating mechanism of Grunding switch gear device.
As shown in Figure 1, this Grunding switch gear device comprises three fixed contacts 2 and three moving contacts 3 of pairing, i.e. the three pairs of fixed contacts and moving contact.Underframe 1 for example is fixedly mounted in switch cubicle, a main shaft 4 rotatably is arranged on underframe 1, thereby three moving contact 3 each intervals are turned up the soil and are fixedly installed on main shaft 4 and can freely rotate with main shaft 4 by a connecting lever spare 7 respectively, and are grounded by two copper flexible cords 9 that are fixed on short circuit sleeve pipe 8 terminations.But it will be appreciated by those skilled in the art that, when the application will be applied to monophase current, Grunding switch gear device can comprise a pair of fixed contact and moving contact, and this is also within protection scope of the present invention.
In the present invention, advantageously, Grunding switch gear device also comprises shielding part 6.In this embodiment, each moving contact 3 places are provided with respectively a shielding part 6, are used for sheltering from connecting lever spare 7 with respect to fixed contact 2 under gate-dividing state, in order to avoid produce most advanced and sophisticated electric field between connecting lever spare and fixed contact under gate-dividing state.In the present embodiment, shielding part 6 preferably is the form of U-shaped plate 6, and this U-shaped plate has base plate 6a and two side plate 6b, and is provided with perforate on each side plate, by described perforate, U-shaped plate fixedly is installed on main shaft 4, thereby U-shaped plate 6 can rotate with main shaft 4 and moving contact 3 when closing operation.After being mounted to main shaft 4, under the gate-dividing state of Grunding switch gear device shown in Figure 2, the lateral surface of base plate 6a is towards fixed contact 4, and connecting lever spare 7 is between two side plate 6b of this U-shaped plate.
But it will be appreciated by those skilled in the art that, shielding part can have other version, if this shielding part on being installed on Grunding switch gear device the time can avoid between fixed contact and connecting lever spare producing most advanced and sophisticated electric field towards the side of fixed contact.For example, replace U-shaped plate, shielding part can be configured with base plate, and biside plate replaces with from base plate and extends out hook portion, this shielding part is for example installed on main shaft by hook portion, and in the case, shielding part can rotate by main shaft or under the drive of other parts.In addition; although this shielding part is to be installed to main shaft 4 in shown embodiment; but other modification is also feasible; for example shielding part can be made into integration with connecting lever spare; perhaps be attached in any suitable manner connecting lever spare; perhaps be attached to other parts of Grunding switch gear device in suitable mode, the shape of these shielding parts and/or layout and mounting means are all contained by protection scope of the present invention.
In the present embodiment, the size of the base plate 6a of U-shaped plate 6 is so selected, when this Grunding switch gear device is in gate-dividing state, U-shaped plate 6 can shelter from connecting lever spare 7 with respect to fixed contact 4, for example the width of the base plate 6a length of major axes orientation (after namely the installing along) be that approximately 46mm arrives approximately 48mm, and length is about 80mm.
In a preferred embodiment, be respectively equipped with the extension section 6c towards the open end bending of U-shaped plate 6 at base plate 6a, two ends that be not connected with its biside plate 6b, the angle of extension section 6c and base plate 6a is 155 °-165 °, is preferably 160 °.The length of extension section 6c is 15mm-25mm.It will be appreciated by those skilled in the art that, the open end of U-shaped plate 6 is that ends relative with base plate 6a.Extension section 6c is configured to seamlessly transit and be preferably in each place, angle rounding with base plate 6a, to reduce point discharge phenomenon.
As shown in Figure 3, underframe 1 preferably includes two foundation unit that are arranged in moving contact 3 places that are positioned at both sides, and each foundation unit comprises two underframe spares.For convenience of description, these two underframe spares are called the first underframe spare 1a and the second underframe spare 1b, each underframe spare has the substrate 1c of strip, and the wider end of substrate 1c is provided with perforate, and by this perforate, main shaft 2 rotatably is installed on underframe spare.Two underframe spares are structurally preferably axially symmetrical each other.In addition, the first underframe spare 1a and the second underframe spare 1b all have perpendicular to substrate 1c and along substrate 1c vertically vertically extend from its edge the installation portion section 11 come, each underframe spare by this installation portion section installation in position to switch cubicle wall for example.
As shown in Figure 1, under the state that assembles, connecting lever spare 7 and moving contact 3 are between the substrate 1c of the first underframe spare 1a and the second underframe spare 1b.In addition, also be provided with spring 5 between connecting lever spare 7 and foundation unit, an end of this spring is connected to connecting lever spare 7 and the other end is connected to foundation unit, namely on the connector between the first underframe spare 1a and the second underframe spare 1b.In the Grunding switch gear device according to the present embodiment, transmit power in separating brake and making process by being contained in main shaft 4 on underframe 1 and rapid spring 5, thereby be grounded smoothly separating brake and the combined floodgate of switching device.
The underframe spare of generally using in the earthed switch field has thinner edge usually the end of back to fixed contact is installed, and this easily produces most advanced and sophisticated electric field between fixed contact and underframe spare, cause electric field inequality and point discharge phenomenon.In order to eliminate defects, in the present invention, existing underframe spare structure is improved to control the electrical field shape at moving contact place, namely, a wider end that is provided with perforate at the substrate 1c of underframe spare 1a, 1b is provided with kink 1d, kink 1d extends in substrate 1c in another edge-perpendicular relative with being provided with installation portion section 11, thereby when this Grunding switch gear device assembles, towards fixed contact 2, and kink 1d preferably is parallel to the plane at each fixed contact 2 places to kink 1d near fixed contact and its lateral surface.In this embodiment, the size Selection of kink 1d also will be considered easy processing when will considering electric field influence, and therefore, the development length of kink 1d is namely the about about 30mm of 20mm-along the length of main shaft 4 directions under installment state, is preferably approximately 25mm.And kink 1d preferably is made into integration with substrate 1c.The height of the kink of the underframe spare length longitudinally of substrate (namely along) can be chosen to the length of the base plate 6a of U-shaped plate 6 basically identical, perhaps is slightly less than the length of the base plate 6a of U-shaped plate 6.In order to prevent point discharge phenomenon, best rounded angle, the junction between kink 1d and substrate 1c seamlessly transits with realization, and each place, angle of kink carries out the rounding processing.
As mentioned above, by setting up U-shaped plate at the moving contact place and increasing in the fixed contact side of underframe spare the electrical field shape that kink changes and control the moving contact place, most advanced and sophisticated electric field is converted to flat field, plays the insulation level of uniform electric field/lifting Grunding switch gear device and the effect that improves withstand voltage level.
Preferably, under gate-dividing state, the lateral surface towards fixed contact 4 towards the substrate 6a of the lateral surface of fixed contact 4 and each U-shaped plate 6 of the kink 1d of each underframe spare 1a, 1b is in same plane basically.
In order further to strengthen insulating capacity and the voltage withstand class according to Grunding switch gear device of the present invention, in a preferred embodiment, the kink 1d of each underframe spare on the side of fixed contact, be coated with epoxy resin.Should be appreciated that the epoxy resin in order to make coating is more firm, the coated area of epoxy resin can extend on a part with the adjacently situated surfaces of the coating surface of kink 1d.
In another preferred embodiment, the base plate 6a of each U-shaped plate on the side of fixed contact 2, be coated with epoxy resin, and extension section 6c on the outer surface of fixed contact, also be coated with epoxy resin.Should be appreciated that the epoxy resin in order to make coating is more firm, the coated area of epoxy resin can extend on a part with the adjacently situated surfaces of the coating surface of base plate 6a.
In a preferred embodiment, the kink 1d of each underframe spare on the side of fixed contact 2, the base plate 6a of each U-shaped plate on the side of fixed contact 4 and extension section 6c be coated with epoxy resin on the side of fixed contact.
In the present invention, the coating thickness of epoxy resin can be 1.5mm-2mm, and the epoxy resin here can be any suitable electric epoxy resin of using.In addition, epoxy resin can painting way be coated on respective surfaces by heating repeatedly, but any other suitable coating method is all feasible.
when the operational grounding switching device closes a floodgate, the connecting lever spare 7 that the operating mechanism (not shown) drives Grunding switch gear device rotates along combined floodgate direction (being seen as from Fig. 1 counterclockwise), and connecting lever spare 7 drives main shaft 4 and moving contact 3 rotates along the combined floodgate direction, the compression rapid spring makes it energy storage, spring energy-storage finishes when main shaft rotates 90 ℃, and pass through the dead point, spring discharges energy storage, make the earthed switch rapid closing, at closing position, moving contact 3 contacts by the flange part of disk spring with fixed contact 2 solid and reliablely, close short circuit current by short circuit sleeve pipe 8 and ground connection annealed copper wire 9 ground connection so that close.
When operational grounding switching device separating brake, the connecting lever spare 7 that operating mechanism drives Grunding switch gear device rotates along separating brake direction (being seen as clockwise direction from Fig. 1), and this connecting lever spare 7 drives main shaft 4 and moving contact 3 rotates along the separating brake direction, the compression rapid spring to terminal, spring energy-storage finishes, and makes the Grunding switch gear device separating brake.It will be apparent to those skilled in the art that the operating mechanism that is used in conjunction with this Grunding switch gear device, its handle divides, the closing operation rotational angle must not be less than 90 ℃.
It will be appreciated by those skilled in the art that, although Fig. 1-illustrated in fig. 3 is the Grunding switch gear device for three-phase alternating current, but the underframe spare with kink in the present invention and U-shaped plate are equally applicable to the single-phase earthing switching device, only need be provided with a pair of moving contact and fixed contact this moment, the configuration mode of the U-shaped plate of underframe spare is constant, described identical effect and effect in the time of reaching equally for use in the three-phase alternating current Grunding switch gear device.
In the present invention, compare with Grunding switch gear device of the prior art, by setting up U-shaped plate at the moving contact place and changing the underframe profile of earthed switch, namely the fixed contact side at underframe increases kink, change and control the electrical field shape at moving contact place, most advanced and sophisticated electric field is become flat field, can be effectively the even electric field at moving contact place, promote insulation level and the withstand voltage level of Grunding switch gear device.More advantageously, by the base plate of the kink of underframe spare and U-shaped plate apply epoxy resin on the side of fixed contact, play the effect of further reinforced insulation ability and withstand voltage effect.By above-mentioned improvement, can be under the prerequisite of profile size constancy according to Grunding switch gear device of the present invention, can be applied to higher electric pressure, for example earthed switch of the prior art can reach the electric pressure of 12kV, and size identical with described earthed switch of the prior art can reach the electric pressure of 17.5kV according to Grunding switch gear device of the present invention.That is to say, the Grunding switch gear device in the present invention still has less volume size when realizing more voltage levels.
Although the invention discloses a plurality of embodiment, and described many details of the present invention by these embodiment simultaneously, the applicant does not plan scope of the present invention is confined to or is restricted in any form these details.After reading disclosure of the present invention, other advantage and changing of the present invention is readily understood that to those skilled in the art.Therefore, can be in the situation that do not break away from the desired thought of the present invention of applicant and scope makes a change, for example the feature of embodiment interchangeable, in conjunction with, change and increase.The scope of the invention is not to determine with reference to above-mentioned explanation, and should determine with reference to appended claims and all equivalency range thereof.
Claims (12)
1. Grunding switch gear device, it can be changed between gate-dividing state and "on" position and comprise: underframe (1); At least one pair of fixed contact (2) and moving contact (3); Rotatably be arranged on the main shaft (4) on this underframe (1); Connecting lever spare (7) is used for described moving contact (3) is fixedly mounted on this main shaft (4); Shielding part (6), the shape of this shielding part and/or layout allow to shelter from least this connecting lever spare (7) with respect to described fixed contact when this Grunding switch gear device is in gate-dividing state.
2. Grunding switch gear device according to claim 1, it is characterized in that, described shielding part (6) is U-shaped plate (6), this U-shaped plate has base plate (6a) and two side plates (6b) and is configured to, when this Grunding switch gear device is in gate-dividing state, the lateral surface of this base plate (6a) is towards described fixed contact (2), and this connecting lever spare (7) is positioned between two side plates (6b) of this U-shaped plate.
3. Grunding switch gear device according to claim 1 and 2, it is characterized in that, comprise three pairs of fixed contacts (2) and moving contact (3), wherein this underframe (1) comprises at least two foundation unit of arranging near at least two moving contacts in three moving contacts (3) respectively, each foundation unit comprises the first underframe spare (1a) and the second underframe spare (1b) that is arranged in described connecting lever spare (7) both sides, this first underframe spare (1a) and this second underframe spare (1b) all have substrate (1c), one end of this substrate is provided with and is suitable for the perforate that this main shaft (4) passes, and has kink (1d) at this end, this kink is configured to be positioned at described fixed contact side and its lateral surface towards described fixed contact (2) when this Grunding switch gear device is in gate-dividing state.
4. Grunding switch gear device according to claim 3, it is characterized in that, this first underframe spare (1a) and this second underframe spare (1b) are structurally axially symmetrical each other, and be arranged symmetrically in the both sides of this connecting lever spare (7), and described kink (1d) extends perpendicular to this substrate (1c).
5. Grunding switch gear device according to claim 4, is characterized in that, described kink (1d) is 20mm to 30mm along the development length of the axis direction of described main shaft (4).
6. Grunding switch gear device according to claim 3, is characterized in that, this underframe (1) comprises two foundation unit of arranging near two moving contacts that are positioned at both sides in described three moving contacts (3) respectively.
7. Grunding switch gear device according to claim 3, it is characterized in that, each described underframe spare (1a, 1b) and each described U-shaped plate (6) be arranged to when this Grunding switch gear device is in gate-dividing state, the lateral surface towards described fixed contact (2) towards the substrate (6a) of the lateral surface of described fixed contact (2) and each described U-shaped plate (6) of the kink of each described underframe spare (1d) is in same plane.
8. Grunding switch gear device according to claim 2, it is characterized in that, the two ends that are not connected with its biside plate (6b) of the base plate (6a) of this U-shaped plate (6) are respectively equipped with the extension section (6c) towards the open end bending of this U-shaped plate (6), and this extension section (6c) is 155 ° to 165 ° with the angle of this base plate (6a).
9. Grunding switch gear device according to claim 8, is characterized in that, the length of this extension section (6c) is 15mm to 25mm.
10. Grunding switch gear device according to claim 1, is characterized in that, each described shielding part (6) at least on the side of described fixed contact, be coated with epoxy resin.
11. Grunding switch gear device according to claim 3 is characterized in that, the kink (1d) of each described underframe spare at least on the side of described fixed contact, be coated with epoxy resin.
12. Grunding switch gear device according to claim 3, it is characterized in that, the kink of described each underframe spare (1d) at least on the lateral surface of described fixed contact (2) and each described shielding part (6) be coated with epoxy resin at least on the side of described fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564373.2A CN103137371B (en) | 2012-12-21 | 2012-12-21 | Grunding switch gear device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210564373.2A CN103137371B (en) | 2012-12-21 | 2012-12-21 | Grunding switch gear device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103137371A true CN103137371A (en) | 2013-06-05 |
| CN103137371B CN103137371B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210564373.2A Active CN103137371B (en) | 2012-12-21 | 2012-12-21 | Grunding switch gear device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107086145A (en) * | 2017-05-24 | 2017-08-22 | 句容市福润电气有限公司 | Flatly moving type indoor hv earthing switch |
| CN112185745A (en) * | 2019-07-04 | 2021-01-05 | 施耐德电器工业公司 | Grounding switch for switch cabinet and switch cabinet |
| CN113163241A (en) * | 2020-01-22 | 2021-07-23 | 海信视像科技股份有限公司 | Display device |
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| CN107086145A (en) * | 2017-05-24 | 2017-08-22 | 句容市福润电气有限公司 | Flatly moving type indoor hv earthing switch |
| CN107086145B (en) * | 2017-05-24 | 2019-06-11 | 句容市福润电气有限公司 | Flatly moving type indoor hv earthing switch |
| CN112185745A (en) * | 2019-07-04 | 2021-01-05 | 施耐德电器工业公司 | Grounding switch for switch cabinet and switch cabinet |
| CN112185745B (en) * | 2019-07-04 | 2023-07-07 | 施耐德电器工业公司 | Grounding switch for switch cabinet and switch cabinet |
| CN113163241A (en) * | 2020-01-22 | 2021-07-23 | 海信视像科技股份有限公司 | Display device |
| CN113163241B (en) * | 2020-01-22 | 2022-07-05 | 海信视像科技股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103137371B (en) | 2016-04-06 |
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