CN114242473A - Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment - Google Patents
Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment Download PDFInfo
- Publication number
- CN114242473A CN114242473A CN202111556213.9A CN202111556213A CN114242473A CN 114242473 A CN114242473 A CN 114242473A CN 202111556213 A CN202111556213 A CN 202111556213A CN 114242473 A CN114242473 A CN 114242473A
- Authority
- CN
- China
- Prior art keywords
- grounding
- wire
- circuit breaker
- travel switch
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention belongs to the technical field of power industry, and particularly relates to a device and a method for preventing primary electrical equipment from being provided with a grounding wire breaker and a disconnecting switch. The invention installs the fixed grounding pile near the position of the primary electrical equipment where the grounding wire needs to be hung, and the fixed grounding pile is connected with the grounding grid. A travel switch is installed on the fixed grounding pile, and a normally closed contact line of the travel switch is connected in series with a control loop of a circuit breaker and an isolating switch on the incoming side of the primary electrical equipment. The device has the characteristics of simple design, convenient operation and practical function; the safety performance is better, and the working efficiency can be greatly improved. The device signal of the invention is connected into the control circuit of the circuit breaker and the isolating switch in a hard wiring mode, the position of the primary electrical equipment suspension grounding wire is not changed, and the control circuit is not adversely affected; meanwhile, the quick-wear parts of the device are universal, and the maintenance is convenient.
Description
Technical Field
The invention belongs to the technical field of power industry, and particularly relates to a device and a method for preventing primary electrical equipment from being provided with a grounding wire breaker and a disconnecting switch, and more particularly relates to a device and a method for preventing the primary electrical equipment from being provided with a grounding wire breaker (switch) and a disconnecting switch (disconnecting link).
Background
At present, the power industry requires that primary electrical equipment has the function of preventing a circuit breaker (switch) with a grounding wire and a disconnecting switch (disconnecting link). Because the ground wire hung on the primary electrical equipment is temporary, no relevant signal is connected into a circuit breaker (switch) and a disconnecting switch (knife switch) control loop, and the primary electrical equipment generally has no function of preventing the circuit breaker (switch) with the ground wire from being connected and the disconnecting switch (knife switch).
Accordingly, those skilled in the art have been constantly developing to address the above problems.
Disclosure of Invention
The invention provides a device and a method for preventing a primary electrical device with a grounding wire from connecting a circuit breaker and a disconnecting switch, aiming at the problems in the prior art. The invention aims to achieve the purposes of simple structure, convenient operation and use, safety and practicability and greatly improving the working efficiency.
In order to achieve the above object, the present invention is achieved by the following technical solutions:
the device for preventing the primary electrical equipment with the grounding wire from closing the circuit breaker and the isolating switch comprises a travel switch and a fixed grounding pile; a plurality of through holes are formed in the fixed grounding pile; the contact of the travel switch on the travel switch is inserted into the through hole on the fixed grounding pile, and an adhesive layer is arranged on the contact surface of the travel switch and the fixed grounding pile; and a normally closed signal wire on a signal wire of a travel switch on the travel switch is connected in series with a control loop of the incoming side circuit breaker and the isolating switch of the primary electrical equipment.
Furthermore, the through holes are provided with two through holes, including a first hole and a second hole.
Furthermore, the through hole is a round hole, and the diameter of the round hole is matched with that of a contact of the travel switch on the travel switch, so that the contact of the travel switch is just arranged in the through hole and passes through the through hole.
Furthermore, the adhesive layer is formed by daubing strong adhesive.
Furthermore, the fixed grounding pile is in a shape of a right-angle plate, one side of the fixed grounding pile is longer than the other side of the fixed grounding pile, and two through holes are formed in the surface of the longer side of the fixed grounding pile.
Furthermore, the fixed grounding pile is made of copper.
The method for preventing the primary electrical equipment with the grounding wire from closing the circuit breaker and the isolating switch comprises the following operation steps:
and 3, installing a locking nut of the grounding end of the grounding wire to tightly connect the grounding end of the grounding wire and the fixed grounding pile together, and connecting the normally closed signal wire on the signal wire of the travel switch on the travel switch in series into a control loop of the incoming call side circuit breaker and the isolating switch of the primary electrical equipment.
Furthermore, in the step 2, the ground wire grounding end is installed by passing the screw of the ground wire grounding end on the ground wire grounding end through the second hole on the fixed grounding pile and making the upper end surface of the ground wire grounding end touch the contact of the travel switch.
Furthermore, in step 3, the locking nut of the grounding end of the grounding wire is installed to tightly connect the grounding end of the grounding wire and the fixed grounding pile together, and the locking nut of the grounding end of the grounding wire is sleeved on the screw rod of the grounding end of the grounding wire and is screwed tightly, so that the grounding end of the grounding wire and the fixed grounding pile are tightly attached together, and the contact of the travel switch is moved upwards.
Further, the method for preventing the primary electric equipment from being provided with the ground circuit breaker and the isolating switch comprises the following steps:
connecting the fixed grounding pile with a grounding grid near the position where the primary electrical equipment needs to hang a grounding wire; installing a travel switch on the fixed grounding pile, and connecting a normally closed contact line of the travel switch in series into a control loop of a circuit breaker and an isolating switch on the incoming call side of the primary electrical equipment;
when the primary electrical equipment has no grounding wire, the travel switch does not act, and the normally closed contact of the travel switch is communicated with the control loop of the circuit breaker and the isolating switch;
when the primary electrical equipment hangs the grounding wire, the grounding end of the grounding wire is firstly connected with the fixed grounding pile, so that the touch travel switch starts to act, the normally closed contact of the travel switch is opened, the control loop of the circuit breaker and the isolating switch is disconnected, and the circuit breaker and the isolating switch with the grounding wire are prevented from being closed.
The invention has the advantages and beneficial effects that:
the device has the characteristics of simple design, convenient operation and use, practical function, universal wearing parts and convenient maintenance. And the appearance is pleasing to the eye, need not to change once electrical equipment and hangs earth wire position, also can not produce harmful effects to the operation. The device signal of the invention is connected to the control loop of the breaker (switch) and the disconnecting switch (disconnecting link) in a hard wiring mode, which does not have adverse effect on the control loop, has better safety performance, and can greatly improve the working efficiency due to the convenience of operation. The device is suitable for being widely popularized and applied in the power industry and has a wide market application prospect.
Drawings
In order to facilitate the understanding and practice of the present invention for those of ordinary skill in the art, the following detailed description of the present invention is provided in conjunction with the accompanying drawings and the detailed description, the following examples are provided to illustrate the present invention, but it should be understood that the scope of the present invention is not limited by the detailed description.
FIG. 1 is a schematic view of the apparatus of the present invention with the fittings broken away;
FIG. 2 is a schematic view of the overall structure of the device of the present invention;
FIG. 3 is a schematic view of the ground connection of the ground line of the device of the present invention.
In the figure:
the travel switch comprises a travel switch 1, a travel switch contact 2, a travel switch signal wire 3, a fixed grounding pile 4, a first hole 5, a second hole 6, a grounding wire grounding end 7, a grounding wire grounding end screw 8 and a grounding wire grounding end locking nut 9.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The solution of some embodiments of the invention is described below with reference to fig. 1-3.
The invention provides an embodiment, and relates to a device and a method for preventing primary electrical equipment from being provided with a ground connection circuit breaker and a disconnecting switch, in particular to a device and a method for preventing the primary electrical equipment from being provided with a ground connection circuit breaker (switch) and a disconnecting switch (disconnecting link). The following is a detailed description of the components of the apparatus of the present invention.
The device of the invention comprises: the travel switch 1 and the fixed grounding pile 4 are formed, and a plurality of through holes are formed in the fixed grounding pile 4; the travel switch 1 is inserted into a through hole on the fixed grounding pile 4, and an adhesive layer is arranged on the surface of the travel switch 1, which is in contact with the fixed grounding pile 4. The viscose layer is daubed strong glue, and the contact surface of the travel switch 1 and the fixed grounding pile 4 is firmly bonded together through the strong glue. And a normally closed signal wire on a signal wire of a travel switch on the travel switch is connected in series with a control loop of the incoming side circuit breaker and the isolating switch of the primary electrical equipment. As shown in fig. 2, fig. 2 is a schematic view of the overall structure of the device of the present invention.
Fig. 1 is a schematic view showing the disassembly of the fitting structure of the device of the present invention. The travel switch 1 is a commercially available existing product, the lower end of the travel switch 1 is connected with a contact 2 of the travel switch, and one side of the upper end of the travel switch 1 is connected with a signal wire 3 of the travel switch.
As shown in fig. 1, the fixed ground pile 4 of the present invention is made of copper, and has a shape of a rectangular plate, wherein one side is longer than the other side, and two through holes are formed on the surface of the longer side, and the through holes are circular holes, namely a first hole 5 and a second hole 6. The diameter of the through hole is matched with that of the contact 2 of the travel switch, so that the contact 2 of the travel switch can be just placed in the through hole and penetrates through the through hole.
The working principle of the present invention is as follows,
in practical implementation, as shown in fig. 3, it is a schematic view of the ground line ground terminal of the device of the present invention. Firstly, weld fixed ground stake 4 and ground net together near primary electrical equipment, pass first hole 5 with travel switch's contact 2 again, carry out fixed bonding through scribbling the super glue with the surface that travel switch 1 and fixed ground stake 4 contacted again to make travel switch 1 more firm install on fixed ground stake 4. And then the normally closed signal line on the signal line 3 of the travel switch is connected in series with the control circuit of the incoming side circuit breaker (switch) and the disconnecting switch (disconnecting link) of the primary electrical equipment.
And the other through hole second hole 6 on the fixed grounding pile 4 is fastened by a screw 8 of the grounding wire grounding end on the grounding wire grounding end 7 and a locking nut 9 of the grounding wire grounding end, so that the fixed grounding pile 4 can be tightly combined and connected with the grounding wire grounding end 7.
Example 2
The invention also provides an embodiment, which is a method for preventing primary electrical equipment from being provided with a grounding circuit breaker and a disconnecting switch, and the method comprises the following operation steps:
and 2, installing a grounding wire grounding end 7, enabling a screw 8 of the grounding wire grounding end to penetrate through the second hole 6 on the fixed grounding pile 4, and enabling the upper end face of the grounding wire grounding end 7 to touch the contact 2 of the travel switch.
And 3, installing a locking nut 9 of the ground wire grounding end, sleeving the locking nut 9 of the ground wire grounding end on a screw 8 of the ground wire grounding end and screwing the locking nut tightly, so that the ground wire grounding end 7 is tightly attached to the fixed grounding pile 4, and the contact 2 of the travel switch moves upwards.
And connecting normally closed signal wires on signal wires of the travel switches on the travel switches in series into control loops of the incoming-side circuit breaker and the isolating switch of the primary electrical equipment.
Example 3
The invention provides an embodiment, in particular to a device and a method for preventing primary electrical equipment from being provided with a grounding wire breaker and a disconnecting switch, which are implemented as follows:
and (3) installing a fixed grounding pile 4 near the position of a primary electric device where a grounding wire needs to be hung, and firstly connecting the fixed grounding pile 4 with a grounding grid. A travel switch 1 is installed on a fixed grounding pile 4, and a normally closed contact line of the travel switch is connected in series to a control loop of a circuit breaker (switch) and a disconnecting switch (disconnecting link) on the incoming call side of primary electrical equipment.
When the primary electrical equipment has no grounding wire, the travel switch 1 does not act, and the normally closed contact of the travel switch 1 is connected with a control loop of a circuit breaker (switch) and an isolating switch (disconnecting link).
When the primary electrical equipment hangs the grounding wire, the grounding wire grounding end 7 is firstly connected with the fixed grounding pile 4, so that the touch travel switch 1 starts to act, the normally closed contact of the travel switch 1 is opened, the control loop of the circuit breaker (switch) and the disconnecting switch (disconnecting link) is disconnected, and the circuit breaker (switch) and the disconnecting switch (disconnecting link) with the grounding wire are prevented from being closed.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated devices or units must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. Prevent that electrical equipment area earth connection from closing circuit breaker, isolator's device, including travel switch (1), characterized by: the device also comprises a fixed grounding pile (4); a plurality of through holes are formed in the fixed grounding pile (4); the contact (2) of the travel switch on the travel switch (1) is inserted into the through hole on the fixed grounding pile (4), and an adhesive layer is arranged on the contact surface of the travel switch (1) and the fixed grounding pile (4); a normally closed signal wire on a signal wire (3) of a travel switch on the travel switch (1) is connected in series with a control loop of a circuit breaker and a disconnecting switch on the incoming call side of the primary electrical equipment.
2. The device for preventing the primary electric equipment with the grounding circuit breaker and the isolating switch as claimed in claim 1, wherein: the through holes are two and comprise a first hole (5) and a second hole (6).
3. The device for preventing the primary electric equipment with the grounding circuit breaker and the isolating switch as claimed in claim 1, wherein: the through hole is a round hole, and the diameter of the round hole is matched with that of a contact (2) of the travel switch on the travel switch (1), so that the contact (2) of the travel switch is just arranged in the through hole and penetrates through the through hole.
4. The device for preventing the primary electric equipment with the grounding circuit breaker and the isolating switch as claimed in claim 1, wherein: the adhesive layer is formed by daubed super glue.
5. The device for preventing the primary electric equipment with the grounding circuit breaker and the isolating switch as claimed in claim 1, wherein: the fixed grounding pile (4) is in a right-angle plate shape, one side of the fixed grounding pile is longer than the other side of the fixed grounding pile, and two through holes are formed in the surface of the longer side of the fixed grounding pile.
6. The device for preventing the primary electric equipment with the grounding circuit breaker and the isolating switch as claimed in claim 1, wherein: the fixed grounding pile (4) is made of copper.
7. The method for preventing the primary electrical equipment with the grounding wire from closing the circuit breaker and the isolating switch is characterized in that: the method comprises the following operation steps:
step 1, dismounting a locking nut of a grounding end of a grounding wire on the grounding end of the grounding wire;
step 2, installing a grounding end of a grounding wire; attaching the grounding end of the grounding wire and the fixed grounding pile together;
step 3, installing a locking nut of the grounding end of the grounding wire to tightly connect the grounding end of the grounding wire and the fixed grounding pile together; and connecting normally closed signal wires on signal wires of the travel switches on the travel switches in series into control loops of the incoming-side circuit breaker and the isolating switch of the primary electrical equipment.
8. The method for preventing the primary electrical equipment from being connected with the ground circuit breaker and the isolating switch as claimed in claim 7, wherein the method comprises the following steps: and 2, installing the grounding end of the grounding wire, namely enabling a screw rod of the grounding end of the grounding wire on the grounding end of the grounding wire to penetrate through a second hole on the fixed grounding pile, and enabling the upper end surface of the grounding end of the grounding wire to touch the contact of the travel switch.
9. The method for preventing the primary electrical equipment from being connected with the ground circuit breaker and the isolating switch as claimed in claim 7, wherein the method comprises the following steps: and 3, installing a locking nut of the grounding end of the grounding wire to tightly connect the grounding end of the grounding wire and the fixed grounding pile together, namely sleeving the locking nut of the grounding end of the grounding wire on a screw rod of the grounding end of the grounding wire and screwing the locking nut, so that the grounding end of the grounding wire and the fixed grounding pile are tightly attached together, and the contact of the travel switch moves upwards.
10. The method for preventing the primary electrical equipment from being connected with the ground circuit breaker and the isolating switch as claimed in claim 7, wherein the method comprises the following steps: the method comprises the following steps:
connecting the fixed grounding pile with a grounding grid near the position where the primary electrical equipment needs to hang a grounding wire; installing a travel switch on the fixed grounding pile, and connecting a normally closed contact line of the travel switch in series into a control loop of a circuit breaker and an isolating switch on the incoming call side of the primary electrical equipment;
when the primary electrical equipment has no grounding wire, the travel switch does not act, and the normally closed contact of the travel switch is communicated with the control loop of the circuit breaker and the isolating switch;
when the primary electrical equipment hangs the grounding wire, the grounding end of the grounding wire is firstly connected with the fixed grounding pile, so that the touch travel switch starts to act, the normally closed contact of the travel switch is opened, the control loop of the circuit breaker and the isolating switch is disconnected, and the circuit breaker and the isolating switch with the grounding wire are prevented from being closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111556213.9A CN114242473A (en) | 2021-12-18 | 2021-12-18 | Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111556213.9A CN114242473A (en) | 2021-12-18 | 2021-12-18 | Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114242473A true CN114242473A (en) | 2022-03-25 |
Family
ID=80758497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111556213.9A Pending CN114242473A (en) | 2021-12-18 | 2021-12-18 | Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114242473A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040201285A1 (en) * | 2003-04-10 | 2004-10-14 | Leccia Brad R. | Apparatus operating an isolation switch in coordination with a circuit breaker |
| CN202749265U (en) * | 2012-08-31 | 2013-02-20 | 武汉钢铁(集团)公司 | Breaker-disconnector electrical interlocking device |
| CN103414119A (en) * | 2013-07-30 | 2013-11-27 | 华北电力大学（保定） | Ground wire mistaken installation preventing device of transformer substation |
| US20150093938A1 (en) * | 2013-01-07 | 2015-04-02 | Huawei Device Co., Ltd. | Smart Card Connection Circuit of Electronic Device and Electronic Device |
| CN106298397A (en) * | 2016-08-31 | 2017-01-04 | 中国西电电气股份有限公司 | A kind of isolation circuit breakers cubicle switch and operational approach |
| CN206271605U (en) * | 2016-12-26 | 2017-06-20 | 山东泰开真空开关有限公司 | A kind of switch cabinet anti-error interlock of electric ground switch |
| CN211404766U (en) * | 2020-04-01 | 2020-09-01 | 国网河南省电力公司平顶山供电公司 | Plug-in type grounding wire grounding device |
| CN112803246A (en) * | 2021-02-06 | 2021-05-14 | 国网湖北省电力有限公司随州供电公司 | Grounding device for sequence control system of 110kVGIS transformer substation |
| CN214204281U (en) * | 2021-02-06 | 2021-09-14 | 国网湖北省电力有限公司随州供电公司 | A 110kV GIS substation for the grounding device of the sequence control system |
| CN216793488U (en) * | 2021-12-18 | 2022-06-21 | 国网新源控股有限公司 | Device for preventing primary electrical equipment from making grounding circuit breakers and isolating switches |
-
2021
- 2021-12-18 CN CN202111556213.9A patent/CN114242473A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040201285A1 (en) * | 2003-04-10 | 2004-10-14 | Leccia Brad R. | Apparatus operating an isolation switch in coordination with a circuit breaker |
| CN202749265U (en) * | 2012-08-31 | 2013-02-20 | 武汉钢铁(集团)公司 | Breaker-disconnector electrical interlocking device |
| US20150093938A1 (en) * | 2013-01-07 | 2015-04-02 | Huawei Device Co., Ltd. | Smart Card Connection Circuit of Electronic Device and Electronic Device |
| CN103414119A (en) * | 2013-07-30 | 2013-11-27 | 华北电力大学（保定） | Ground wire mistaken installation preventing device of transformer substation |
| CN106298397A (en) * | 2016-08-31 | 2017-01-04 | 中国西电电气股份有限公司 | A kind of isolation circuit breakers cubicle switch and operational approach |
| CN206271605U (en) * | 2016-12-26 | 2017-06-20 | 山东泰开真空开关有限公司 | A kind of switch cabinet anti-error interlock of electric ground switch |
| CN211404766U (en) * | 2020-04-01 | 2020-09-01 | 国网河南省电力公司平顶山供电公司 | Plug-in type grounding wire grounding device |
| CN112803246A (en) * | 2021-02-06 | 2021-05-14 | 国网湖北省电力有限公司随州供电公司 | Grounding device for sequence control system of 110kVGIS transformer substation |
| CN214204281U (en) * | 2021-02-06 | 2021-09-14 | 国网湖北省电力有限公司随州供电公司 | A 110kV GIS substation for the grounding device of the sequence control system |
| CN216793488U (en) * | 2021-12-18 | 2022-06-21 | 国网新源控股有限公司 | Device for preventing primary electrical equipment from making grounding circuit breakers and isolating switches |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101779567B1 (en) | Installation device for wide area lightning rod and installation method thereof | |
| CN110828081B (en) | Indoor use automatic tripping arrester | |
| CN114242473A (en) | Device and method for preventing circuit breakers and disconnectors with grounded wires in primary electrical equipment | |
| CN216793488U (en) | Device for preventing primary electrical equipment from making grounding circuit breakers and isolating switches | |
| CN216903736U (en) | A device for collecting and disconnecting the grounding wire in real time | |
| CN208489502U (en) | A kind of cable elbow-shaped head grounding wire device | |
| CN207459201U (en) | Novel multi-functional low pressure user wiring fastener | |
| CN202749310U (en) | Replaceable built-in voltage transformer high voltage alternating current dividing circuit breaker | |
| CN209389653U (en) | A kind of power bus-bar slot installation equipment | |
| CN214706268U (en) | A portable grounding wire device for a substation | |
| CN205724785U (en) | Insulation bracket and wire support structure | |
| CN114361952A (en) | A device and method for real-time acquisition of grounding wire hanging and dismantling states | |
| CN204614659U (en) | A kind of jamproof high sensitivity zero sequence current mutual inductor | |
| CN211818469U (en) | Power line cross arm protective sheath | |
| CN110600311B (en) | An outdoor groundable knife switch | |
| CN207339205U (en) | A kind of tower grounding device | |
| CN208939544U (en) | Can plug protector alternately interconnect grounding box | |
| CN112531361A (en) | Novel pipe generating line earth connection articulates device | |
| CN208955629U (en) | A kind of lightning protection device of 10kV distribution line | |
| CN205066173U (en) | Water boiler | |
| CN219779756U (en) | Detachable rotary lightning arrester with detacher | |
| CN205212422U (en) | Isolated intelligent lightning prevention box in radio communication basic station | |
| CN216084479U (en) | Distribution network arrester base | |
| CN205070181U (en) | Network machine switch board | |
| KR200285610Y1 (en) | Earth Rod Having Slantly-arranged Holes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |